Swift Trigger: 280958;

Presumed name: GRB 070531

BAT	00^h 27^m 07.20^s, +74° 18′ 14.4″
position:	(6.780, 74.3040 ± 180″)
XRT	00^h 26^m 57.55^s, +74° 18′ 47.2″
position:	(6.7398, +74.3131 ± 3.6″)
UVOT	No position available.
Galactic N_HI:	0.00×10⁰ cm^-2
Galactic E(B-V):	0.375 mag

Best RA:	00^h 26^m 57.55^s	= 6.7398 d
Best Dec:	+74° 18′ 47.2″	= +74.3131 d

Gal Lat:
Gal Long:

Sun angle:	not found

Galaxies within 3.33 of XRT position

	RA*	Dec*		Catalogue
1.7	6.7412	74.3131		NED
14.2	6.7491	74.3101	I=18.4, R1=19.3, R2=20.1	USNO-B1
22.5	6.7350	74.3192	B1=20.8, B2=21.2, I=18.7, R2=19.7	USNO-B1
31.3	6.7395	74.3044	I=17.4, R1=17.5	USNO-B1
32.2	6.7069	74.3139	B1=16.4, B2=16.2, I=14.9, R1=15.3, R2=15.6	USNO-B1
35.5	6.7168	74.3208	I=18.6, R2=19.8	USNO-B1
37.2	6.7167	74.3213	B1=18.0, I=18.5, R2=20.2	USNO-B1
46.9	6.7606	74.3014	B1=20.8, B2=21.1, I=18.5, R1=19.2, R2=19.8	USNO-B1
49.5	6.7676	74.3246	B1=19.8, B2=19.7, I=18.2, R1=18.2, R2=18.3	USNO-B1
53.7	6.7593	74.2991	I=18.8, R1=19.0	USNO-B1
53.9	6.7949	74.3144	B1=20.6, I=18.9, R2=20.3	USNO-B1
55.3	6.7728	74.3256	B2=21.2, I=18.7	USNO-B1
57.8	6.7761	74.3258	B2=21.2, I=18.6	USNO-B1
61.1	6.7960	74.3207	B1=20.8, I=18.8	USNO-B1
63.5	6.7717	74.3285	I=16.9, R2=20.2	USNO-B1
65.2	6.6855	74.3025	I=18.6, R2=20.4	USNO-B1
69.7	6.8105	74.3162	B1=20.6, I=16.6	USNO-B1
70.2	6.7809	74.2971	B1=18.7, B2=18.6, I=17.4, R1=17.8, R2=17.2	USNO-B1
72.6	6.6660	74.3161	I=18.4, R1=19.5	USNO-B1
75.5	6.6893	74.3290	B1=20.7, I=18.4	USNO-B1
77.6	6.7869	74.2957	I=18.7, R1=18.9	USNO-B1
82.9	6.8157	74.3235	B1=17.6, I=18.6, R1=19.1	USNO-B1
82.9	6.7492	74.3360	I=18.2, R1=19.0, R2=19.1	USNO-B1
83.5	6.7226	74.3358	I=17.9, R1=17.8	USNO-B1
85.3	6.7211	74.3362	I=18.2, R1=17.6	USNO-B1
85.3	6.7225	74.3363	B1=20.3, B2=18.8, I=18.2, R1=18.9	USNO-B1
86.2	6.6513	74.3141	B1=20.4, B2=20.1, I=18.2, R1=18.8, R2=18.6	USNO-B1
86.7	6.7161	74.2899	B1=20.6, R2=20.1	USNO-B1
87.5	6.7899	74.3333	B2=20.9, R1=19.0, R2=20.3	USNO-B1
89.2	6.6630	74.2996	I=18.1, R1=18.7	USNO-B1
89.6	6.7253	74.3377	B1=20.0, B2=19.6, I=17.8, R1=18.4, R2=18.1	USNO-B1
92.0	6.7872	74.3352	B1=20.5, B2=19.9, R1=17.9, R2=18.8	USNO-B1
92.6	6.6675	74.2964	I=18.7, R1=19.2, R2=19.9	USNO-B1
93.5	6.6794	74.2929	B1=20.6, I=18.4	USNO-B1
93.8	6.7009	74.2893	B1=16.9, B2=16.9, I=15.6, R1=16.1, R2=16.2	USNO-B1
96.2	6.6412	74.3149	B1=20.1, B2=20.1, I=17.9, R1=18.9, R2=17.9	USNO-B1
96.9	6.8355	74.3205	B1=20.6, B2=20.5, I=18.5, R1=19.1, R2=19.2	USNO-B1
97.5	6.8284	74.3005	B2=20.9, I=18.4, R2=19.9	USNO-B1
101.7	6.6776	74.3358	B1=20.8, B2=20.9, I=18.6, R2=19.8	USNO-B1
102.1	6.7720	74.2861	B1=16.6, B2=16.3, I=15.1, R1=15.6, R2=15.6	USNO-B1
104.0	6.7710	74.2855	B2=15.4, R1=15.4, R2=14.0	USNO-B1
104.2	6.8006	74.3369	I=14.6, R2=20.2	USNO-B1
105.5	6.8008	74.3373	R1=19.0, R2=18.9	USNO-B1
109.2	6.6801	74.3388	B2=21.0, R1=19.1	USNO-B1
109.4	6.7276	74.2829	B1=20.1, B2=21.0, I=18.7, R1=19.2, R2=19.9	USNO-B1
109.4	6.6806	74.3390	B2=21.0, I=18.4, R1=19.0, R2=20.1	USNO-B1
109.7	6.7240	74.2829	B1=20.6, I=18.7, R2=18.8	USNO-B1
112.6	6.8020	74.3395	B2=20.8, I=16.4	USNO-B1
115.7	6.8338	74.3328	B1=20.8, I=18.9, R1=17.7, R2=19.8	USNO-B1
122.0	6.6157	74.3082	B2=20.1, R1=18.6, R2=18.5	USNO-B1
122.8	6.7038	74.2804	B2=19.8, I=17.1, R1=17.9	USNO-B1
124.0	6.7786	74.3459	I=18.6, R1=19.3, R2=19.9	USNO-B1
124.7	6.6453	74.3365	B1=20.8, B2=21.2, I=18.7, R2=19.1	USNO-B1
126.8	6.7920	74.2808	B1=19.7, B2=19.7, I=18.1, R1=18.7, R2=17.6	USNO-B1
128.3	6.8274	74.2865	I=18.0, R1=18.4	USNO-B1
129.4	6.7822	74.2790	B1=20.8, B2=21.1	USNO-B1
130.6	6.8067	74.3446	B2=21.2, I=18.2, R1=19.3, R2=19.4	USNO-B1
131.3	6.8714	74.3211	B1=19.3, R2=18.3	USNO-B1
132.0	6.7822	74.2783	B1=20.2, I=18.6	USNO-B1
134.3	6.6444	74.3401	B2=21.2, I=18.9, R1=19.5, R2=20.0	USNO-B1
134.8	6.7363	74.2757	B1=20.6, B2=20.2, I=18.7, R1=19.0, R2=19.4	USNO-B1
134.8	6.7962	74.2789	B2=20.6, I=16.7, R1=17.8, R2=18.5	USNO-B1
135.4	6.7982	74.2790	B1=20.8, B2=19.5, I=15.9, R1=17.2, R2=16.8	USNO-B1
136.3	6.6317	74.2890	B1=18.2, B2=17.8, I=15.9, R1=16.5, R2=16.0	USNO-B1
136.9	6.6695	74.2802	B2=20.9, I=18.4, R2=18.8	USNO-B1
137.3	6.8695	74.2981	B1=20.8, B2=20.6, I=18.6, R2=20.1	USNO-B1
138.4	6.6307	74.2885	I=16.2, R2=19.0	USNO-B1
140.3	6.6108	74.3305	B1=15.5, B2=15.4, I=13.3, R1=13.8, R2=13.7	USNO-B1
142.0	6.6053	74.2978	B2=19.8, I=17.3, R1=18.1, R2=17.1	USNO-B1
143.0	6.8304	74.3444	B1=18.6, B2=18.3, I=17.1, R1=17.9, R2=17.5	USNO-B1
143.3	6.7581	74.2736	I=16.1, R1=19.0	USNO-B1
143.6	6.8847	74.3206	B1=19.7, B2=19.0, I=16.4, R1=17.2, R2=17.2	USNO-B1
146.4	6.6986	74.2740	B2=20.8, I=17.6, R1=18.6, R2=18.4	USNO-B1
146.6	6.8811	74.3272	B1=20.7, B2=20.9, R2=19.6	USNO-B1
148.7	6.7588	74.2721	B1=20.8, I=17.6, R2=19.0	USNO-B1
150.6	6.7134	74.2719	B1=15.6, B2=15.5, I=14.3, R1=14.6, R2=14.8	USNO-B1
151.1	6.5850	74.3100	B1=18.5, B2=18.1, I=16.8, R1=17.1, R2=17.1	USNO-B1
151.9	6.8335	74.3469	B2=21.2, I=18.6, R1=19.0, R2=20.1	USNO-B1
153.2	6.5830	74.3094	B2=21.1, I=16.7	USNO-B1
159.1	6.5832	74.3005	I=18.4, R2=19.4	USNO-B1
159.8	6.7153	74.3570	I=16.6, R2=19.1	USNO-B1
160.9	6.6955	74.3562	B2=20.9, I=17.6, R1=19.4, R2=19.8	USNO-B1
161.1	6.8860	74.3341	I=18.6, R1=19.3	USNO-B1
161.7	6.7561	74.3578	B1=20.6, I=18.3	USNO-B1
162.4	6.7581	74.3579	B1=20.5, B2=20.4, I=18.2, R1=18.9, R2=18.8	USNO-B1
162.6	6.7101	74.3575	I=16.7, R2=19.0	USNO-B1
164.2	6.9074	74.3079	B2=20.4, I=18.1, R1=19.2, R2=19.1	USNO-B1
165.7	6.6161	74.3448	B1=19.7, B2=19.2, I=17.9, R1=18.6, R2=18.1	USNO-B1
166.2	6.9105	74.3143	B2=20.6, R1=19.1, R2=19.2	USNO-B1
166.4	6.5688	74.3130	B1=20.6, B2=20.4, I=18.1, R1=18.9, R2=18.7	USNO-B1
168.5	6.5793	74.3307	B2=21.1, I=18.6, R1=19.4	USNO-B1
170.4	6.5647	74.3130	B1=20.7, B2=19.8, I=18.4	USNO-B1
171.4	6.5637	74.3133	B1=20.8, B2=20.4, I=18.8, R1=19.2, R2=19.5	USNO-B1
171.5	6.5665	74.3218	I=18.2, R2=18.8	USNO-B1
172.1	6.5630	74.3131	B1=20.8, I=18.0, R1=18.9	USNO-B1
173.8	6.8053	74.3580	I=18.9, R1=19.2	USNO-B1
174.4	6.5645	74.3231	B2=20.1, I=18.6	USNO-B1
175.1	6.8913	74.3394	B1=18.2, B2=17.9, I=16.7, R1=17.0, R2=17.1	USNO-B1
175.9	6.9205	74.3121	B1=16.6, B2=16.4, I=15.1, R1=15.1, R2=15.5	USNO-B1
178.5	6.8588	74.2754	B1=20.7, I=18.7	USNO-B1
178.9	6.5632	74.2994	B2=19.9, I=17.4	USNO-B1
179.3	6.5557	74.3124	I=18.6, R1=19.3, R2=19.6	USNO-B1
179.5	6.6635	74.2677	I=18.5, R2=19.1	USNO-B1
179.6	6.6216	74.3515	B1=18.8, B2=18.3, I=17.0, R1=17.8, R2=17.1	USNO-B1
180.9	6.7722	74.2636	B1=19.4, B2=18.7, I=17.1, R1=18.0, R2=18.1	USNO-B1
182.4	6.5556	74.3224	B2=16.9, I=17.8	USNO-B1
183.4	6.5516	74.3155	B2=20.9, I=18.0, R1=18.7, R2=18.7	USNO-B1
183.7	6.9150	74.2944		NED
184.0	6.9269	74.3206	B1=20.0, B2=20.2	USNO-B1
186.0	6.7593	74.2617	I=18.4, R2=19.5	USNO-B1
187.5	6.5479	74.3178	I=18.1, R1=17.2, R2=16.9	USNO-B1
187.8	6.9327	74.3126	B2=20.6, I=18.2, R1=19.1, R2=19.5	USNO-B1
188.2	6.5465	74.3143	B2=21.2, I=18.0, R2=18.9	USNO-B1
188.3	6.8350	74.3586	B1=17.6, I=17.2	USNO-B1
188.8	6.7279	74.3654	I=17.3, R1=18.7	USNO-B1
189.2	6.9306	74.3232	B1=19.6, B2=19.3, I=17.5, R1=18.5, R2=18.2	USNO-B1
189.9	6.8290	74.3600	I=18.1, R1=19.1, R2=19.7	USNO-B1
190.1	6.5453	74.3178	I=17.8, R1=17.5	USNO-B1
190.2	6.5456	74.3191	I=16.7, R1=16.9	USNO-B1
190.2	6.5448	74.3168	I=18.4, R1=17.6	USNO-B1
190.8	6.5507	74.3271	B2=20.1, I=17.6, R1=17.7	USNO-B1
191.8	6.5481	74.3255	I=15.8, R1=18.0	USNO-B1
192.4	6.5496	74.3277	B1=20.7, R1=17.4, R2=18.6	USNO-B1
192.5	6.7101	74.2602	B1=20.5, I=18.8	USNO-B1
192.5	6.7468	74.2597	I=18.8, R2=19.8	USNO-B1
192.9	6.7077	74.3660	I=17.0, R1=18.8	USNO-B1
194.3	6.6665	74.2629	B1=20.6, B2=20.1, I=18.0, R1=18.9, R2=18.8	USNO-B1
194.8	6.7051	74.2598	I=18.4, R2=20.2	USNO-B1
196.7	6.7664	74.3673	B1=18.0, B2=17.7, I=16.1, R1=16.7, R2=16.8	USNO-B1
197.2	6.6957	74.3666	B1=20.8, B2=20.9, I=17.7, R1=18.7, R2=19.7	USNO-B1
197.7	6.5496	74.3324	B1=18.9, B2=20.8, I=18.5, R2=19.9	USNO-B1
198.6	6.8131	74.2616	B1=20.0, I=18.6, R1=18.0	USNO-B1
199.2	6.6595	74.2622	I=17.9, R1=19.4	USNO-B1
199.4	6.9274	74.3354	I=18.8, R2=19.0	USNO-B1

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