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Swift Trigger: 522586;

Presumed name: GRB 120521B

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BAT 13h 08m 03.36s, -52° 44′ 45.6″
position:(197.014, -52.746 ± 180″)
XRT 13h 08m 02.28s, -52° 45′ 17.6″
position:(197.0095, -52.7549 ± 2.2″)
UVOT No position available.
Galactic NHI:2.27×1021 cm-2
Galactic E(B-V):0.454 mag
Best RA:13h 08m 02.28s= 197.0095 d
Best Dec:-52° 45′ 17.6″= -52.7549 d
Gal Lat:10.03
Gal Long:305.48
Sun angle:134.51°, -9.23 hr East of Sun

1Sper #10 auto processing.

Galaxies within 3.33 of XRT position

RA*Dec*Redshift CatalogueQuery
3.0197.0084-52.7554B2=18.4, I=17.1, R1=17.0, R2=17.2USNO-B1Query vizier around this object
13.3197.0041-52.7532R1=18.3, R2=19.6USNO-B1Query vizier around this object
18.5197.0126-52.7597B=21.6, R2=20.5SSSQuery vizier around this object
19.8197.0174-52.7576B2=20.0, R1=18.7, R2=19.7USNO-B1Query vizier around this object
21.0197.0183-52.7573B2=19.8, R1=18.9USNO-B1Query vizier around this object
30.4197.0154-52.7626B2=18.2, I=17.0, R1=17.0, R2=17.4USNO-B1Query vizier around this object
31.3197.0112-52.7635B2=18.3, I=16.8, R1=16.9, R2=17.2USNO-B1Query vizier around this object
32.8197.0028-52.7631B=18.6, R2=17.2, i=16.5SSSQuery vizier around this object
33.5197.0152-52.7463B2=18.5, R1=17.4, R2=19.2USNO-B1Query vizier around this object
38.5197.0023-52.7451B2=17.9, I=16.4, R1=15.2USNO-B1Query vizier around this object
39.7196.9971-52.7468B2=20.0, R1=18.8, R2=20.2USNO-B1Query vizier around this object
40.0197.0072-52.7439R1=17.9, R2=19.8USNO-B1Query vizier around this object
42.7196.9901-52.7532B2=17.1, I=15.2, R1=15.5, R2=15.9USNO-B1Query vizier around this object
43.2196.9902-52.7521B2=20.3, I=15.3USNO-B1Query vizier around this object
43.4197.0056-52.7667B2=19.1, I=18.2, R1=18.8, R2=19.2USNO-B1Query vizier around this object
49.5197.0286-52.7475B2=20.0, R1=19.0USNO-B1Query vizier around this object
53.1197.0195-52.7684B=20.3, R2=19.1, i=18.8SSSQuery vizier around this object
53.2196.9865-52.7598R1=18.1, R2=19.6USNO-B1Query vizier around this object
57.0197.0265-52.7429R1=18.8, R2=19.7USNO-B1Query vizier around this object
60.4196.9943-52.7409I=18.1, R1=18.0, R2=19.5USNO-B1Query vizier around this object
63.3197.0079-52.7373B2=20.0, R1=18.9USNO-B1Query vizier around this object
63.7197.0082-52.7372B2=19.9, R1=18.4, R2=19.7USNO-B1Query vizier around this object
64.7196.9867-52.7434B2=19.3, I=16.7USNO-B1Query vizier around this object
64.9196.9825-52.7474I=17.6, R1=13.4USNO-B1Query vizier around this object
68.2196.9786-52.7580B2=19.2, R2=18.9USNO-B1Query vizier around this object
68.4197.0395-52.7605B2=19.4, R1=18.3USNO-B1Query vizier around this object
68.4196.9859-52.7424B2=18.4, I=15.6USNO-B1Query vizier around this object
69.5196.9976-52.7370B2=18.4, I=17.5, R1=17.4, R2=17.9USNO-B1Query vizier around this object
69.7196.9856-52.7420B2=16.2, I=14.1, R2=15.1USNO-B1Query vizier around this object
69.8196.9782-52.7590B2=18.8, R2=17.9USNO-B1Query vizier around this object
72.2196.9860-52.7407B2=20.0, I=17.2, R2=17.2USNO-B1Query vizier around this object
73.2197.0430-52.7540I=16.6, R2=17.0USNO-B1Query vizier around this object
73.5197.0429-52.7522B2=20.1, R1=18.8, R2=19.8USNO-B1Query vizier around this object
74.4197.0436-52.7563B2=18.8, I=17.7, R1=17.5, R2=18.4USNO-B1Query vizier around this object
74.7197.0220-52.7356B2=17.8, I=16.2, R1=16.6, R2=16.6USNO-B1Query vizier around this object
80.4196.9743-52.7482B2=19.9, I=17.8, R2=18.9USNO-B1Query vizier around this object
80.6196.9727-52.7570B2=18.9, I=18.0, R1=17.8, R2=18.8USNO-B1Query vizier around this object
84.8196.9917-52.7340B2=18.9, I=17.3, R1=16.5, R2=17.8USNO-B1Query vizier around this object
86.6196.9732-52.7451B2=17.6, I=16.0, R1=16.3, R2=16.4USNO-B1Query vizier around this object
87.4197.0494-52.7573B=19.8, R2=18.3, i=18.0SSSQuery vizier around this object
87.9197.0497-52.7572B2=18.8, I=17.6, R1=16.8, R2=18.0USNO-B1Query vizier around this object
88.1196.9706-52.7615B2=20.0, R2=19.7USNO-B1Query vizier around this object
91.0197.0511-52.7528B2=19.8, I=18.0, R1=18.6, R2=19.4USNO-B1Query vizier around this object
91.9196.9681-52.7499B2=19.8, R1=16.6USNO-B1Query vizier around this object
94.1197.0438-52.7708B2=17.1, I=15.4, R1=16.9, R2=15.8USNO-B1Query vizier around this object
94.2197.0519-52.7599I=17.9, R2=19.7USNO-B1Query vizier around this object
94.3196.9762-52.7717B2=17.6, I=16.3, R1=17.6, R2=16.6USNO-B1Query vizier around this object
94.9196.9737-52.7399B2=16.1, I=13.2, R1=14.4, R2=14.3USNO-B1Query vizier around this object
97.0197.0532-52.7602B2=19.9, I=18.2, R2=18.8USNO-B1Query vizier around this object
97.1196.9687-52.7657B2=16.7, I=14.8, R1=15.5, R2=15.3USNO-B1Query vizier around this object
99.2197.0519-52.7649B2=19.9, I=17.0, R2=20.3USNO-B1Query vizier around this object
99.8196.9638-52.7530B2=20.0, R1=18.5, R2=19.8USNO-B1Query vizier around this object
101.1197.0034-52.7827B=21.5, R2=20.3SSSQuery vizier around this object
102.1197.0037-52.7831B2=20.1, R1=19.0USNO-B1Query vizier around this object
102.5196.9921-52.7285B2=19.9, R1=17.8USNO-B1Query vizier around this object
102.8196.9852-52.7304B2=18.6, R1=10.2USNO-B1Query vizier around this object
102.8196.9625-52.7522B2=18.7, I=17.2, R1=17.5, R2=17.6USNO-B1Query vizier around this object
103.4196.9932-52.7279B2=20.0, R1=18.4, R2=19.9USNO-B1Query vizier around this object
103.6197.0307-52.7291B2=20.0, R1=17.8USNO-B1Query vizier around this object
104.8197.0525-52.7419B=20.9, R2=19.7, i=18.9SSSQuery vizier around this object
106.1196.9865-52.7289B2=19.9, R1=17.8, R2=18.6USNO-B1Query vizier around this object
110.1196.9684-52.7371B2=18.8, I=17.4USNO-B1Query vizier around this object
112.1196.9581-52.7537B2=19.7, R1=18.6, R2=19.6USNO-B1Query vizier around this object
112.4197.0014-52.7857B=22.5, R2=20.4SSSQuery vizier around this object
113.5197.0616-52.7551B=20.0, R2=18.5, i=18.3SSSQuery vizier around this object
117.4197.0577-52.7695B2=20.0, R1=18.1USNO-B1Query vizier around this object
117.6197.0068-52.7875B2=18.8, I=17.3, R1=16.8, R2=17.6USNO-B1Query vizier around this object
118.1196.9619-52.7392B2=18.5, I=17.5, R1=17.5, R2=18.3USNO-B1Query vizier around this object
118.3197.0098-52.7878B=22.3SSSQuery vizier around this object
120.3197.0326-52.7246B2=20.0, I=17.9, R1=18.4, R2=19.6USNO-B1Query vizier around this object
120.8196.9608-52.7389B2=18.9, I=17.9, R1=16.6USNO-B1Query vizier around this object
122.6197.0481-52.7301B2=18.7, I=17.9, R1=17.3, R2=17.9USNO-B1Query vizier around this object
123.3197.0380-52.7253B2=19.1, R1=17.8, R2=19.3USNO-B1Query vizier around this object
123.7196.9693-52.7306B2=18.0, I=16.9USNO-B1Query vizier around this object
124.0197.0485-52.7298I=17.8, R1=17.6USNO-B1Query vizier around this object
124.1197.0662-52.7580B2=19.8, I=18.3, R1=18.3, R2=19.8USNO-B1Query vizier around this object
124.7197.0554-52.7756B2=20.0, R1=18.3USNO-B1Query vizier around this object
125.9197.0534-52.7322B2=19.2, I=17.9, R1=18.4, R2=19.1USNO-B1Query vizier around this object
128.9196.9786-52.7854B2=18.0, R2=18.0USNO-B1Query vizier around this object
130.4197.0645-52.7691B2=18.5, I=17.4, R1=18.1, R2=17.9USNO-B1Query vizier around this object
130.5197.0504-52.7284I=18.0, R1=17.5, R2=20.0USNO-B1Query vizier around this object
130.8196.9495-52.7545B2=19.3, R1=17.7USNO-B1Query vizier around this object
132.5196.9599-52.7336B2=19.9, R1=17.6, R2=19.6USNO-B1Query vizier around this object
132.9197.0442-52.7245B2=20.0, I=17.8, R1=18.2, R2=19.3USNO-B1Query vizier around this object
133.0196.9545-52.7389B2=18.4, I=16.1USNO-B1Query vizier around this object
133.9197.0607-52.7343B=22.3SSSQuery vizier around this object
134.6197.0674-52.7419B=21.9, R2=20.8SSSQuery vizier around this object
134.8196.9570-52.7351B2=19.3, I=17.2, R1=18.3, R2=19.3USNO-B1Query vizier around this object
135.0197.0228-52.7183B2=17.6, I=16.4, R1=16.7, R2=16.4USNO-B1Query vizier around this object
135.7196.9686-52.7265B2=19.3, R1=17.9USNO-B1Query vizier around this object
136.1196.9505-52.7673B2=19.9, I=14.0, R2=15.3USNO-B1Query vizier around this object
136.3196.9687-52.7262B2=19.1, R1=18.0USNO-B1Query vizier around this object
136.9196.9542-52.7368B2=14.4, R1=17.8USNO-B1Query vizier around this object
137.1197.0462-52.7859B2=19.7, R1=17.4USNO-B1Query vizier around this object
137.7197.0712-52.7632B2=20.0, R1=18.1, R2=19.5USNO-B1Query vizier around this object
138.0197.0345-52.7901B=21.1SSSQuery vizier around this object
138.7197.0591-52.7790I=15.0, R1=16.1, R2=14.8USNO-B1Query vizier around this object
139.2196.9682-52.7254B2=19.4, R1=17.9USNO-B1Query vizier around this object
139.3197.0476-52.7239B2=18.9, I=17.5, R1=17.6, R2=18.1USNO-B1Query vizier around this object
139.7196.9683-52.7252B2=19.3, R1=18.0USNO-B1Query vizier around this object
140.5197.0070-52.7159B2=19.8, R1=17.9, R2=18.6USNO-B1Query vizier around this object
142.8196.9806-52.7905B=22.1SSSQuery vizier around this object
145.1197.0735-52.7438I=16.5, R1=15.5, R2=16.8USNO-B1Query vizier around this object
145.4196.9859-52.7927B=21.0, R2=19.1, i=18.9SSSQuery vizier around this object
147.3196.9423-52.7593B2=19.9, R1=18.3USNO-B1Query vizier around this object
147.4196.9712-52.7211B2=17.6, I=17.1, R1=18.3USNO-B1Query vizier around this object
148.8196.9413-52.7528B2=19.7, R1=18.7USNO-B1Query vizier around this object
149.9196.9840-52.7936B=21.4, R2=20.4SSSQuery vizier around this object
150.4197.0515-52.7880B2=20.0, I=17.7USNO-B1Query vizier around this object
151.4196.9628-52.7860B2=19.3, I=17.9, R1=18.1USNO-B1Query vizier around this object
153.4197.0578-52.7239B2=16.9, I=15.2, R1=14.7, R2=15.2USNO-B1Query vizier around this object
153.5196.9702-52.7903B2=20.1, I=18.2USNO-B1Query vizier around this object
154.4197.0803-52.7539B2=19.7, I=17.8USNO-B1Query vizier around this object
154.6196.9930-52.7131B2=19.6, R1=17.5, R2=19.5USNO-B1Query vizier around this object
155.3196.9858-52.7956B=20.8, R2=19.6, i=19.4SSSQuery vizier around this object
156.1196.9414-52.7685B2=17.8, I=17.2, R1=16.5, R2=17.2USNO-B1Query vizier around this object
156.6197.0777-52.7413I=17.8, R1=25.0USNO-B1Query vizier around this object
156.8196.9915-52.7971B2=19.1, R1=16.9, R2=18.2USNO-B1Query vizier around this object
157.0197.0412-52.7941R1=18.4, R2=19.9USNO-B1Query vizier around this object
158.4196.9688-52.7185B2=18.6, I=17.6, R1=17.4USNO-B1Query vizier around this object
158.5197.0595-52.7869B2=20.1, R1=18.5USNO-B1Query vizier around this object
158.8197.0283-52.7975B2=19.9, R2=19.8USNO-B1Query vizier around this object
159.0196.9549-52.7842B2=19.9, R1=17.9USNO-B1Query vizier around this object
160.0197.0816-52.7635B2=18.9, I=17.2, R1=27.6, R2=17.7USNO-B1Query vizier around this object
161.0197.0712-52.7303B2=19.3, I=18.0, R1=16.6, R2=18.7USNO-B1Query vizier around this object
162.0197.0837-52.7579B2=19.3, I=17.9, R1=17.7, R2=19.0USNO-B1Query vizier around this object
163.0196.9683-52.7171B2=16.0, R1=17.8, R2=16.9USNO-B1Query vizier around this object
163.4197.0210-52.7100B2=17.0, I=15.0, R1=15.8, R2=15.3USNO-B1Query vizier around this object
163.7197.0066-52.8003B=20.3, R2=18.9, i=18.3SSSQuery vizier around this object
164.0196.9689-52.7166B2=18.3, R1=16.5USNO-B1Query vizier around this object
165.0196.9736-52.7953B=21.4, R2=19.9, i=19.2SSSQuery vizier around this object
165.7196.9651-52.7923B2=17.8, I=16.4USNO-B1Query vizier around this object
166.6196.9769-52.7130I=17.1, R1=16.2, R2=17.2USNO-B1Query vizier around this object
167.4197.0863-52.7549B2=18.5, I=17.4, R1=17.3, R2=17.8USNO-B1Query vizier around this object
167.5196.9669-52.7162B2=18.5, I=17.5, R1=16.0, R2=17.6USNO-B1Query vizier around this object
168.2196.9521-52.7862B2=18.5, I=16.8, R2=17.1USNO-B1Query vizier around this object
169.0197.0652-52.7222B=20.1, R2=18.6, i=18.5SSSQuery vizier around this object
169.9197.0067-52.7077B2=19.5, I=17.2USNO-B1Query vizier around this object
169.9197.0206-52.7082B2=18.1, I=16.7, R1=16.1, R2=16.5USNO-B1Query vizier around this object
170.1197.0636-52.7209B=18.8, R2=16.8, i=16.6SSSQuery vizier around this object
170.2196.9532-52.7877B2=18.9, R2=17.5USNO-B1Query vizier around this object
170.2197.0638-52.7209B2=17.2, I=16.6, R1=13.8, R2=15.8USNO-B1Query vizier around this object
170.4197.0497-52.7955B2=17.7, I=16.4, R2=17.1USNO-B1Query vizier around this object
170.4196.9538-52.7881B2=19.1, I=17.5, R1=17.2USNO-B1Query vizier around this object
170.8196.9441-52.7287I=17.4, R1=18.8USNO-B1Query vizier around this object
171.1196.9538-52.7884B2=18.1, I=17.4, R1=16.8, R2=17.6USNO-B1Query vizier around this object
171.2196.9941-52.7083B2=18.7, R1=17.9USNO-B1Query vizier around this object
171.6197.0074-52.7073B2=18.0, I=17.2, R1=17.1, R2=17.9USNO-B1Query vizier around this object
171.8197.0202-52.7076B2=17.9, I=16.9, R1=17.1USNO-B1Query vizier around this object
172.1197.0004-52.7074B2=19.5, R1=18.4USNO-B1Query vizier around this object
172.6196.9313-52.7471B2=18.9, I=17.2, R1=17.2, R2=18.2USNO-B1Query vizier around this object
172.7196.9707-52.7967B=20.6, R2=19.0, i=18.4SSSQuery vizier around this object
172.7197.0002-52.8025B=20.9, R2=19.5SSSQuery vizier around this object
172.8196.9901-52.8014B2=18.4, I=17.7, R1=16.9, R2=18.0USNO-B1Query vizier around this object
173.1197.0379-52.7998B=20.7, R2=20.2SSSQuery vizier around this object
173.7197.0362-52.8004B2=18.1, I=17.4, R2=18.3USNO-B1Query vizier around this object
175.0197.0582-52.7163I=15.6, R1=14.1USNO-B1Query vizier around this object
175.1197.0722-52.7854I=18.0, R2=18.7USNO-B1Query vizier around this object
175.4196.9295-52.7603B2=18.9, I=18.2, R1=18.3USNO-B1Query vizier around this object
176.2197.0452-52.7988B=21.0SSSQuery vizier around this object
176.2196.9753-52.7993B2=19.0, R1=17.3, R2=19.6USNO-B1Query vizier around this object
176.5196.9857-52.7081I=17.5, R1=16.9USNO-B1Query vizier around this object
176.7197.0903-52.7587B2=19.7, I=17.5, R2=19.9USNO-B1Query vizier around this object
176.7196.9874-52.8021B=22.5, R2=20.7SSSQuery vizier around this object
177.7196.9831-52.7082B2=10.0, I=14.7, R2=16.9USNO-B1Query vizier around this object
177.7196.9844-52.7079I=17.1, R1=16.6, R2=18.6USNO-B1Query vizier around this object
178.7196.9828-52.7079I=17.8, R1=17.3USNO-B1Query vizier around this object
179.3197.0890-52.7421B2=19.5, R1=18.4, R2=18.0USNO-B1Query vizier around this object
179.4196.9294-52.7435B2=19.8, R1=18.6, R2=19.7USNO-B1Query vizier around this object
181.3197.0301-52.7061B2=19.8, R1=18.7, R2=19.9USNO-B1Query vizier around this object
181.3197.0641-52.7169B2=19.9, R1=18.1, R2=19.9USNO-B1Query vizier around this object
183.7196.9774-52.7077I=15.3, R2=14.7USNO-B1Query vizier around this object
183.9196.9438-52.7229B2=17.8, I=17.8, R1=17.5, R2=17.4USNO-B1Query vizier around this object
183.9197.0939-52.7548B2=20.0, R1=19.0USNO-B1Query vizier around this object
184.0197.0638-52.7940B2=19.8, R1=18.9USNO-B1Query vizier around this object
184.6196.9345-52.7311B2=18.3, I=15.3, R1=17.1, R2=17.1USNO-B1Query vizier around this object
185.0197.0928-52.7648I=17.2, R1=16.7, R2=17.5USNO-B1Query vizier around this object
186.3197.0937-52.7458B2=18.7, I=17.9, R1=17.8, R2=18.4USNO-B1Query vizier around this object
186.3197.0506-52.7095B2=20.1, R1=18.9USNO-B1Query vizier around this object
186.5196.9425-52.7227B2=17.7, I=16.9, R1=17.0, R2=16.7USNO-B1Query vizier around this object
186.7196.9240-52.7585B2=20.3, I=17.4, R1=18.6USNO-B1Query vizier around this object
187.1197.0294-52.7044R1=18.4, R2=20.2USNO-B1Query vizier around this object
187.3197.0351-52.7052B2=20.0, R1=18.9USNO-B1Query vizier around this object
188.4197.0534-52.8000B2=20.0, I=18.3, R2=20.2USNO-B1Query vizier around this object
190.8196.9827-52.7044I=14.1, R1=13.5, R2=14.0USNO-B1Query vizier around this object
191.6196.9830-52.7041I=13.2, R1=13.3, R2=13.8USNO-B1Query vizier around this object
191.7196.9818-52.7043B2=13.1, I=13.6, R1=14.9USNO-B1Query vizier around this object
192.9197.0828-52.7849B2=19.5, I=17.8, R2=18.6USNO-B1Query vizier around this object
193.7196.9924-52.8077B=21.5, R2=19.7, i=18.9SSSQuery vizier around this object
194.2197.0767-52.7195B=20.9, R2=19.4, i=18.8SSSQuery vizier around this object
194.7196.9505-52.7955B2=19.5, R2=19.4USNO-B1Query vizier around this object
195.1197.0628-52.7114B2=19.8, I=17.8, R1=18.0, R2=19.1USNO-B1Query vizier around this object
195.2196.9876-52.7023B2=18.0, R2=17.8USNO-B1Query vizier around this object
196.0197.0599-52.8000B2=19.1, I=18.1, R2=20.0USNO-B1Query vizier around this object
196.4196.9898-52.8081B=21.7, R2=20.4SSSQuery vizier around this object
196.4197.0087-52.7004B2=18.0, I=16.6, R1=16.9, R2=16.8USNO-B1Query vizier around this object
196.9197.0803-52.7210B=19.8, R2=18.5, i=17.8SSSQuery vizier around this object
197.1197.0977-52.7672B2=18.2, I=16.2, R1=17.1, R2=16.8USNO-B1Query vizier around this object
197.4197.0232-52.7007B2=17.8, I=16.2, R1=15.7, R2=16.2USNO-B1Query vizier around this object
197.7197.0798-52.7202B=19.8, R2=18.6, i=18.0SSSQuery vizier around this object
197.7197.0060-52.7000B2=18.7, I=17.6, R1=17.1, R2=18.0USNO-B1Query vizier around this object
197.7196.9192-52.7606B2=18.7, I=17.5, R1=17.4, R2=18.2USNO-B1Query vizier around this object
199.2196.9273-52.7307B2=19.9, R1=18.4USNO-B1Query vizier around this object
199.8197.0264-52.7004B2=18.0, I=14.7, R1=15.7, R2=16.0USNO-B1Query vizier around this object
199.9196.9265-52.7786R1=18.5, R2=20.3USNO-B1Query vizier around this object

Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.

* RA/Dec in equinox J2000

Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example