Table 7: Optical and NIR observations carried out for the GRB 021004 afterglow. The magnitudes are in the Vega system and not corrected for Galactic reddening.
Date UT Telescope Filter Texp (s) Mag ErMag

2002 Oct. 4.9792 2.2CAHA U 900 19.15 0.07

2002 Oct. 5.0986 2.2CAHA U 900 19.59 0.08

2002 Oct. 5.1785 2.2CAHA U 900 19.83 0.09

2002 Oct. 5.9653 2.2CAHA U 1200 20.48 0.08

2002 Oct. 6.9284 2.2CAHA U 1800 20.89 0.08

2002 Oct. 7.9767 2.2CAHA U 600 21.16 0.17

2002 Oct. 9.2990 1.0USNO U 5 $\times$ 1800 21.70 0.14

2002 Oct. 10.244 1.0USNO U 1800 21.73 0.25

2002 Oct. 11.269 1.0USNO U 4 $\times$ 1800 21.76 0.17

2002 Oct. 5.4890
1.0USNO B 1200 20.30 0.05

2002 Oct. 5.9844 2.2CAHA B 600 20.86 0.05

2002 Oct. 6.0300 1.52Loiano B 1800 20.73 0.11

2002 Oct. 6.9537 2.2CAHA B 1800 21.17 0.04

2002 Oct. 6.9965 1.52Loiano B 2 $\times$ 2400 21.42 0.09

2002 Oct. 7.9522 2.2CAHA B 1200 21.41 0.06

2002 Oct. 9.3160 1.0USNO B 5 $\times$ 900 21.74 0.06

2002 Oct. 10.115 3.5TNG B 2 $\times$ 300 22.12 0.05

2002 Oct. 11.287 1.0USNO B 4 $\times$ 1200 22.20 0.11

2002 Oct. 26.050 4.2WHT B 7 $\times$ 300 24.28 0.13

2002 Nov. 27.003 2.5INT B 10 $\times$ 600 24.54 0.05

2002 Dec. 5.762 6.0SAO B 3600 24.65 0.13

2002 Oct. 4.5857
0.6MOA Blue(V) 180 16.90 0.05

2002 Oct. 4.5934 0.6MOA Blue(V) 180 16.91 0.04

2002 Oct. 4.6002 0.6MOA Blue(V) 180 17.01 0.03

2002 Oct. 4.9896 2.2CAHA V 300 18.93 0.05

2002 Oct. 5.1090 2.2CAHA V 300 19.32 0.05

2002 Oct. 5.1882 2.2CAHA V 300 19.54 0.05

2002 Oct. 5.4780 1.0USNO V 600 19.71 0.04

2002 Oct. 5.5232 0.6MOA Blue(V) 2 $\times$ 600 19.77 0.09

2002 Oct. 5.5330 0.6MOA Blue(V) 600 19.76 0.13

2002 Oct. 5.5593 0.6MOA Blue(V) 2 $\times$ 600 19.71 0.07

2002 Oct. 5.6060 0.6MOA Blue(V) 3 $\times$ 600 19.74 0.07

2002 Oct. 5.9920 2.2CAHA V 300 19.74 0.07

2002 Oct. 6.0110 1.52Loiano V 1200 20.18 0.06

2002 Oct. 6.1240 1.52Loiano V 900 20.15 0.31

2002 Oct. 6.8650 1.52Loiano V 1800 20.52 0.13

2002 Oct. 6.9410 1.52Loiano V 2 $\times$ 1800 20.75 0.08

2002 Oct. 6.9595 2.2CAHA V 600 20.55 0.05

2002 Oct. 7.9668 2.2CAHA V 600 20.85 0.06

2002 Oct. 9.3250 1.0USNO V 5 $\times$ 600 21.20 0.05

2002 Oct. 10.348 1.0USNO V 5 $\times$ 600 21.60 0.08

2002 Oct. 11.298 1.0USNO V 4 $\times$ 600 21.75 0.10

2002 Nov. 29.811 6.0SAO V 2250 24.43 0.17

2002 Dec. 5.698 6.0SAO V 3600 24.13 0.09

2003 Sep. 17.073 4.2WHT V 5 $\times$ 900 24.45 0.04

2002 Oct. 4.9965
2.2CAHA Rc 300 18.55 0.03

2002 Oct. 5.1146 2.2CAHA Rc 300 18.96 0.02

2002 Oct. 5.1938 2.2CAHA Rc 300 19.12 0.03

2002 Oct. 5.4700 1.0USNO Rc 600 19.35 0.04

2002 Oct. 5.5000 1.0USNO Rc 600 19.31 0.04

2002 Oct. 5.9790 1.52Loiano Rc 1200 19.67 0.06

2002 Oct. 5.9976 2.2CAHA Rc 300 19.73 0.03

2002 Oct. 6.0500 1.52Loiano Rc 1200 19.87 0.06

2002 Oct. 6.0620 3.5TNG Rc $2\times120$ 19.72 0.04

2002 Oct. 6.8140 1.52Loiano Rc $3\times1800$ 20.20 0.08

2002 Oct. 6.9687 2.2CAHA Rc 600 20.13 0.03

2002 Oct. 7.9906 2.2CAHA Rc 600 20.39 0.06

2002 Oct. 9.3060 1.0USNO Rc $4\times600$ 20.87 0.06

2002 Oct. 10.105 3.5TNG Rc $2\times180$ 21.05 0.05

2002 Oct. 10.356 1.0USNO Rc $5\times600$ 21.14 0.07

2002 Oct. 11.305 1.0USNO Rc $4\times600$ 21.35 0.10

2002 Nov. 29.693 6.0SAO Rc 2700 24.29 0.18

2002 Oct. 4.5823
0.6MOA Red(Ic) 180 16.19 0.08

2002 Oct. 4.5900 0.6MOA Red(Ic) 180 16.09 0.08

2002 Oct. 4.5968 0.6MOA Red(Ic) 180 16.13 0.12

2002 Oct. 5.0035 2.2CAHA Ic 600 18.09 0.08

2002 Oct. 5.1215 2.2CAHA Ic 600 18.45 0.08

2002 Oct. 5.2017 2.2CAHA Ic 600 18.62 0.08

2002 Oct. 5.2750 1.55USNO Ic 900 18.68 0.02

2002 Oct. 5.3970 1.55USNO Ic 900 18.71 0.01

2002 Oct. 5.4620 1.0USNO Ic 600 18.79 0.06

2002 Oct. 5.5149 0.6MOA Red(Ic) $2\times600$ 18.90 0.13

2002 Oct. 5.5247 0.6MOA Red(Ic) 600 18.85 0.17

2002 Oct. 5.5510 0.6MOA Red(Ic) $2\times600$ 18.61 0.11

2002 Oct. 5.6067 0.6MOA Red(Ic) $3\times600$ 18.98 0.13

2002 Oct. 5.9940 1.52Loiano Ic 900 19.32 0.08

2002 Oct. 6.0069 2.2CAHA Ic 900 19.24 0.08

2002 Oct. 6.0580 3.5TNG Ic $2\times120$ 19.22 0.04

2002 Oct. 6.9120 1.52Loiano Ic 1200 19.70 0.10

2002 Oct. 6.9811 2.2CAHA Ic 900 19.60 0.07

2002 Oct. 8.3310 1.55USNO Ic $2\times900$ 20.09 0.02

2002 Oct. 10.363 1.0USNO Ic $5\times600$ 20.78 0.13

2002 Oct. 11.313 1.0USNO Ic $4\times600$ 21.05 0.13

2002 Dec. 3.000 6.0SAO Ic 2640 23.77 0.19

2003 Dec. 28.888 2.5NOT Ic $14\times300$ 23.82 0.17

2002 Oct. 4.8847
1.5Tirgo J 1680 16.74 0.10

2002 Oct. 5.1167 1.5Tirgo J 1920 17.90 0.23

2002 Oct. 5.8514 1.5Tirgo J 1680 18.06 0.39

2004 Jan. 5.805 3.5CAHA J 7260 23.15 0.38

2004 Jan. 7.2775
3.5CAHA H 6120 >21.5 --

2002 Oct. 4.8622
1.5Tirgo Ks 1740 15.30 0.14

2002 Oct. 5.0882 1.5Tirgo Ks 2040 15.95 0.17

2002 Oct. 5.8743 1.5Tirgo Ks 1920 16.12 0.24

2002 Oct. 6.0014 1.5Tirgo Ks 3480 16.71 0.21

**Table 7:** Optical and NIR observations carried out for the GRB 021004 afterglow. The magnitudes are in the Vega system and not corrected for Galactic reddening.
Date UT	Telescope	Filter	Texp (s)	Mag	ErMag
2002 Oct. 4.9792	2.2CAHA	U	900	19.15	0.07
2002 Oct. 5.0986	2.2CAHA	U	900	19.59	0.08
2002 Oct. 5.1785	2.2CAHA	U	900	19.83	0.09
2002 Oct. 5.9653	2.2CAHA	U	1200	20.48	0.08
2002 Oct. 6.9284	2.2CAHA	U	1800	20.89	0.08
2002 Oct. 7.9767	2.2CAHA	U	600	21.16	0.17
2002 Oct. 9.2990	1.0USNO	U	5 $\times$ 1800	21.70	0.14
2002 Oct. 10.244	1.0USNO	U	1800	21.73	0.25
2002 Oct. 11.269	1.0USNO	U	4 $\times$ 1800	21.76	0.17
2002 Oct. 5.4890	1.0USNO	B	1200	20.30	0.05
2002 Oct. 5.9844	2.2CAHA	B	600	20.86	0.05
2002 Oct. 6.0300	1.52Loiano	B	1800	20.73	0.11
2002 Oct. 6.9537	2.2CAHA	B	1800	21.17	0.04
2002 Oct. 6.9965	1.52Loiano	B	2 $\times$ 2400	21.42	0.09
2002 Oct. 7.9522	2.2CAHA	B	1200	21.41	0.06
2002 Oct. 9.3160	1.0USNO	B	5 $\times$ 900	21.74	0.06
2002 Oct. 10.115	3.5TNG	B	2 $\times$ 300	22.12	0.05
2002 Oct. 11.287	1.0USNO	B	4 $\times$ 1200	22.20	0.11
2002 Oct. 26.050	4.2WHT	B	7 $\times$ 300	24.28	0.13
2002 Nov. 27.003	2.5INT	B	10 $\times$ 600	24.54	0.05
2002 Dec. 5.762	6.0SAO	B	3600	24.65	0.13
2002 Oct. 4.5857	0.6MOA	Blue(V)	180	16.90	0.05
2002 Oct. 4.5934	0.6MOA	Blue(V)	180	16.91	0.04
2002 Oct. 4.6002	0.6MOA	Blue(V)	180	17.01	0.03
2002 Oct. 4.9896	2.2CAHA	V	300	18.93	0.05
2002 Oct. 5.1090	2.2CAHA	V	300	19.32	0.05
2002 Oct. 5.1882	2.2CAHA	V	300	19.54	0.05
2002 Oct. 5.4780	1.0USNO	V	600	19.71	0.04
2002 Oct. 5.5232	0.6MOA	Blue(V)	2 $\times$ 600	19.77	0.09
2002 Oct. 5.5330	0.6MOA	Blue(V)	600	19.76	0.13
2002 Oct. 5.5593	0.6MOA	Blue(V)	2 $\times$ 600	19.71	0.07
2002 Oct. 5.6060	0.6MOA	Blue(V)	3 $\times$ 600	19.74	0.07
2002 Oct. 5.9920	2.2CAHA	V	300	19.74	0.07
2002 Oct. 6.0110	1.52Loiano	V	1200	20.18	0.06
2002 Oct. 6.1240	1.52Loiano	V	900	20.15	0.31
2002 Oct. 6.8650	1.52Loiano	V	1800	20.52	0.13
2002 Oct. 6.9410	1.52Loiano	V	2 $\times$ 1800	20.75	0.08
2002 Oct. 6.9595	2.2CAHA	V	600	20.55	0.05
2002 Oct. 7.9668	2.2CAHA	V	600	20.85	0.06
2002 Oct. 9.3250	1.0USNO	V	5 $\times$ 600	21.20	0.05
2002 Oct. 10.348	1.0USNO	V	5 $\times$ 600	21.60	0.08
2002 Oct. 11.298	1.0USNO	V	4 $\times$ 600	21.75	0.10
2002 Nov. 29.811	6.0SAO	V	2250	24.43	0.17
2002 Dec. 5.698	6.0SAO	V	3600	24.13	0.09
2003 Sep. 17.073	4.2WHT	V	5 $\times$ 900	24.45	0.04
2002 Oct. 4.9965	2.2CAHA	Rc	300	18.55	0.03
2002 Oct. 5.1146	2.2CAHA	Rc	300	18.96	0.02
2002 Oct. 5.1938	2.2CAHA	Rc	300	19.12	0.03
2002 Oct. 5.4700	1.0USNO	Rc	600	19.35	0.04
2002 Oct. 5.5000	1.0USNO	Rc	600	19.31	0.04
2002 Oct. 5.9790	1.52Loiano	Rc	1200	19.67	0.06
2002 Oct. 5.9976	2.2CAHA	Rc	300	19.73	0.03
2002 Oct. 6.0500	1.52Loiano	Rc	1200	19.87	0.06
2002 Oct. 6.0620	3.5TNG	Rc	$2\times120$	19.72	0.04
2002 Oct. 6.8140	1.52Loiano	Rc	$3\times1800$	20.20	0.08
2002 Oct. 6.9687	2.2CAHA	Rc	600	20.13	0.03
2002 Oct. 7.9906	2.2CAHA	Rc	600	20.39	0.06
2002 Oct. 9.3060	1.0USNO	Rc	$4\times600$	20.87	0.06
2002 Oct. 10.105	3.5TNG	Rc	$2\times180$	21.05	0.05
2002 Oct. 10.356	1.0USNO	Rc	$5\times600$	21.14	0.07
2002 Oct. 11.305	1.0USNO	Rc	$4\times600$	21.35	0.10
2002 Nov. 29.693	6.0SAO	Rc	2700	24.29	0.18
2002 Oct. 4.5823	0.6MOA	Red(Ic)	180	16.19	0.08
2002 Oct. 4.5900	0.6MOA	Red(Ic)	180	16.09	0.08
2002 Oct. 4.5968	0.6MOA	Red(Ic)	180	16.13	0.12
2002 Oct. 5.0035	2.2CAHA	Ic	600	18.09	0.08
2002 Oct. 5.1215	2.2CAHA	Ic	600	18.45	0.08
2002 Oct. 5.2017	2.2CAHA	Ic	600	18.62	0.08
2002 Oct. 5.2750	1.55USNO	Ic	900	18.68	0.02
2002 Oct. 5.3970	1.55USNO	Ic	900	18.71	0.01
2002 Oct. 5.4620	1.0USNO	Ic	600	18.79	0.06
2002 Oct. 5.5149	0.6MOA	Red(Ic)	$2\times600$	18.90	0.13
2002 Oct. 5.5247	0.6MOA	Red(Ic)	600	18.85	0.17
2002 Oct. 5.5510	0.6MOA	Red(Ic)	$2\times600$	18.61	0.11
2002 Oct. 5.6067	0.6MOA	Red(Ic)	$3\times600$	18.98	0.13
2002 Oct. 5.9940	1.52Loiano	Ic	900	19.32	0.08
2002 Oct. 6.0069	2.2CAHA	Ic	900	19.24	0.08
2002 Oct. 6.0580	3.5TNG	Ic	$2\times120$	19.22	0.04
2002 Oct. 6.9120	1.52Loiano	Ic	1200	19.70	0.10
2002 Oct. 6.9811	2.2CAHA	Ic	900	19.60	0.07
2002 Oct. 8.3310	1.55USNO	Ic	$2\times900$	20.09	0.02
2002 Oct. 10.363	1.0USNO	Ic	$5\times600$	20.78	0.13
2002 Oct. 11.313	1.0USNO	Ic	$4\times600$	21.05	0.13
2002 Dec. 3.000	6.0SAO	Ic	2640	23.77	0.19
2003 Dec. 28.888	2.5NOT	Ic	$14\times300$	23.82	0.17
2002 Oct. 4.8847	1.5Tirgo	J	1680	16.74	0.10
2002 Oct. 5.1167	1.5Tirgo	J	1920	17.90	0.23
2002 Oct. 5.8514	1.5Tirgo	J	1680	18.06	0.39
2004 Jan. 5.805	3.5CAHA	J	7260	23.15	0.38
2004 Jan. 7.2775	3.5CAHA	H	6120	>21.5	--
2002 Oct. 4.8622	1.5Tirgo	Ks	1740	15.30	0.14
2002 Oct. 5.0882	1.5Tirgo	Ks	2040	15.95	0.17
2002 Oct. 5.8743	1.5Tirgo	Ks	1920	16.12	0.24
2002 Oct. 6.0014	1.5Tirgo	Ks	3480	16.71	0.21

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and data reduction
	3 Brief description of the modelling
	4 Results
	5 Discussion
	6 Conclusions
	References