Table I. SWAN SOHO Preperihelion Observations of Comet Hale-Bopp (1995 O1)
Date |
r |
D |
B |
F |
Q |
1997 |
(AU) |
(AU) |
(Rayleighs) |
(1011 phot cm-2 s-1) |
(1030 s-1) |
Jan 01 |
1.75 |
2.56 |
382 |
3.197 |
2.20 |
Jan 03 |
1.73 |
2.53 |
356 |
3.029 |
2.06 |
Jan 04 |
1.72 |
2.51 |
398 |
3.175 |
2.27 |
Jan 06 |
1.69 |
2.48 |
379 |
3.122 |
2.05 |
Jan 08 |
1.66 |
2.45 |
394 |
3.048 |
1.97 |
Jan 10 |
1.64 |
2.42 |
427 |
2.957 |
2.13 |
Jan 23 |
1.48 |
2.18 |
709 |
3.145 |
2.21 |
Jan 24 |
1.46 |
2.16 |
758 |
3.145 |
2.64 |
Jan 25 |
1.45 |
2.14 |
953 |
3.147 |
2.52 |
Jan 30 |
1.39 |
2.04 |
984 |
3.092 |
3.18 |
Jan 31 |
1.38 |
2.02 |
993 |
3.096 |
3.02 |
Feb 03 |
1.34 |
1.96 |
1209 |
2.886 |
3.60 |
Feb 05 |
1.32 |
1.93 |
1344 |
2.991 |
4.06 |
Feb 07 |
1.31 |
1.89 |
1589 |
2.886 |
4.25 |
Feb 10 |
1.26 |
1.83 |
1846 |
2.972 |
4.10 |
Feb 13 |
1.23 |
1.77 |
2452 |
3.140 |
5.35 |
Feb 14 |
1.22 |
1.75 |
2567 |
3.135 |
4.98 |
Feb 15 |
1.21 |
1.73 |
2779 |
3.127 |
5.69 |
Feb 17 |
1.19 |
1.69 |
3209 |
3.130 |
5.37 |
Feb 21 |
1.14 |
1.62 |
3948 |
3.128 |
7.02 |
Feb 22 |
1.13 |
1.60 |
4150 |
3.104 |
5.93 |
Feb 27 |
1.09 |
1.52 |
5413 |
2.866 |
7.34 |
Feb 28 |
1.08 |
1.50 |
5922 |
2.872 |
8.21 |
Mar 03 |
1.05 |
1.46 |
6965 |
3.023 |
7.94 |
Mar 06 |
1.03 |
1.42 |
7870 |
3.040 |
9.69 |
Mar 07 |
1.02 |
1.41 |
8262 |
3.010 |
9.27 |
Mar 13 |
0.98 |
1.35 |
9409 |
2.862 |
8.89 |
Mar 22 |
0.93 |
1.32 |
11312 |
3.013 |
9.49 |
Mar 23 |
0.93 |
1.32 |
11112 |
3.034 |
8.64 |
Mar 25 |
0.92 |
1.32 |
11347 |
3.022 |
10.03 |
Mar 28 |
0.92 |
1.33 |
11526 |
3.107 |
9.67 |
r = heliocentric distance in AU
D
= geocentric distance in AUB = brightness in Rayleighs
F = solar Lyman-
a flux at 1 AUQ = water production rate*+.
Table II. SWAN SOHO Postperihelion Observations of Comet Hale-Bopp (1995 O1)
Date |
r |
D |
B |
F |
Q |
1997 |
(AU) |
(AU) |
(Rayleighs) |
(1011 phot cm-2 s-1) |
(1030 s-1) |
Apr 01 |
0.91 |
1.35 |
12121 |
2.980 |
10.19 |
Apr 07 |
0.92 |
1.41 |
11038 |
3.056 |
8.81 |
Apr 10 |
0.93 |
1.44 |
11109 |
2.951 |
9.76 |
Apr 12 |
0.93 |
1.47 |
10030 |
2.932 |
10.49 |
Apr 14 |
0.94 |
1.50 |
9935 |
2.900 |
11.21 |
Apr 17 |
0.96 |
1.54 |
9681 |
2.904 |
10.58 |
Apr 18 |
0.96 |
1.55 |
9769 |
2.848 |
12.10 |
Apr 19 |
0.97 |
1.57 |
9754 |
2.909 |
12.43 |
Apr 21 |
0.98 |
1.60 |
9795 |
2.981 |
12.04 |
Apr 25 |
1.01 |
1.67 |
8753 |
2.928 |
12.15 |
Apr 26 |
1.02 |
1.68 |
8353 |
2.963 |
11.80 |
Apr 28 |
1.03 |
1.72 |
7257 |
3.052 |
8.91 |
May 01 |
1.06 |
1.77 |
6003 |
3.021 |
8.15 |
May 07 |
1.11 |
1.87 |
4057 |
2.974 |
5.91 |
May 10 |
1.14 |
1.92 |
3798 |
3.011 |
6.06 |
May 12 |
1.16 |
1.96 |
3678 |
3.074 |
5.38 |
May 17 |
1.21 |
2.04 |
3524 |
3.059 |
5.73 |
May 24 |
1.29 |
2.15 |
2982 |
3.038 |
5.42 |
r = heliocentric distance in AU
D
= geocentric distance in AUB = brightness in Rayleighs
F = solar Lyman-
a flux at 1 AUQ = water production rate