메타데이터
| 항목 |
값 |
| Designation |
C/1991 B1 (Shoemaker-Levy) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1991-12-31T04:34:48.403200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:40Z |
| Obs used |
429 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
9.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1992-05-14.0000000 |
| e |
0.99357570 |
| q (au) |
2.265069 |
| a (au) |
352.578443 |
| i (deg) |
77.287941 |
| Ω (om, deg) |
145.130159 |
| ω (w, deg) |
74.368785 |
| M (ma, deg) |
0.020070 |
밝기
산란 + 전체 선형
$$
M_a = (3.416 + 5.065\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
3.416 |
| n |
5.065 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 1991-01-13 |
1991-04-17 |
+5.4067 |
-3.381 |
| 1991-04-17 |
1991-12-31 |
-2.6378 |
+1.210 |
| 1992-01-01 |
1992-06-26 |
+4.2282 |
-1.567 |
| 1992-06-26 |
1993-10-08 |
-3.6144 |
+1.867 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
00:47:14.88 |
-51:16:12.5 |
HIP 3556 |
27.07 |
| 2026-05-12 12:00 |
00:47:17.40 |
-51:16:23.7 |
HIP 3556 |
27.17 |
| 2026-05-13 00:00 |
00:47:19.91 |
-51:16:35.1 |
HIP 3556 |
27.27 |
| 2026-05-13 12:00 |
00:47:22.41 |
-51:16:46.7 |
HIP 3556 |
27.37 |
| 2026-05-14 00:00 |
00:47:24.89 |
-51:16:58.5 |
HIP 3556 |
27.47 |
| 2026-05-14 12:00 |
00:47:27.35 |
-51:17:10.5 |
HIP 3556 |
27.58 |
| 2026-05-15 00:00 |
00:47:29.80 |
-51:17:22.7 |
HIP 3556 |
27.69 |
| 2026-05-15 12:00 |
00:47:32.23 |
-51:17:35.1 |
HIP 3556 |
27.80 |
| 2026-05-16 00:00 |
00:47:34.64 |
-51:17:47.7 |
HIP 3556 |
27.92 |
| 2026-05-16 12:00 |
00:47:37.04 |
-51:18:00.5 |
HIP 3556 |
28.03 |
| 2026-05-17 00:00 |
00:47:39.42 |
-51:18:13.5 |
HIP 3556 |
28.15 |
| 2026-05-17 12:00 |
00:47:41.78 |
-51:18:26.8 |
HIP 3556 |
28.27 |
| 2026-05-18 00:00 |
00:47:44.13 |
-51:18:40.2 |
HIP 3556 |
28.39 |
| 2026-05-18 12:00 |
00:47:46.45 |
-51:18:53.8 |
HIP 3556 |
28.51 |
| 2026-05-19 00:00 |
00:47:48.77 |
-51:19:07.6 |
HIP 3556 |
28.63 |
| 2026-05-19 12:00 |
00:47:51.06 |
-51:19:21.6 |
HIP 3556 |
28.76 |
| 2026-05-20 00:00 |
00:47:53.33 |
-51:19:35.9 |
HIP 3556 |
28.88 |
| 2026-05-20 12:00 |
00:47:55.59 |
-51:19:50.3 |
HIP 3556 |
29.01 |
| 2026-05-21 00:00 |
00:47:57.83 |
-51:20:04.9 |
HIP 3556 |
29.14 |
| 2026-05-21 12:00 |
00:48:00.05 |
-51:20:19.7 |
HIP 3556 |
29.27 |
| 2026-05-22 00:00 |
00:48:02.25 |
-51:20:34.6 |
HIP 3556 |
29.40 |
| 2026-05-22 12:00 |
00:48:04.43 |
-51:20:49.8 |
HIP 3556 |
29.54 |
| 2026-05-23 00:00 |
00:48:06.60 |
-51:21:05.2 |
HIP 3556 |
29.67 |
| 2026-05-23 12:00 |
00:48:08.75 |
-51:21:20.7 |
HIP 3556 |
29.81 |
| 2026-05-24 00:00 |
00:48:10.87 |
-51:21:36.4 |
HIP 3556 |
29.94 |
| 2026-05-24 12:00 |
00:48:12.98 |
-51:21:52.4 |
HIP 3556 |
30.08 |
| 2026-05-25 00:00 |
00:48:15.07 |
-51:22:08.5 |
HIP 3556 |
30.22 |
| 2026-05-25 12:00 |
00:48:17.14 |
-51:22:24.8 |
HIP 3556 |
30.36 |
| 2026-05-26 00:00 |
00:48:19.19 |
-51:22:41.2 |
HIP 3556 |
30.50 |
| 2026-05-26 12:00 |
00:48:21.22 |
-51:22:57.9 |
HIP 3556 |
30.64 |
| 2026-05-27 00:00 |
00:48:23.23 |
-51:23:14.7 |
HIP 3556 |
30.79 |
| 2026-05-27 12:00 |
00:48:25.22 |
-51:23:31.7 |
HIP 3556 |
30.93 |
| 2026-05-28 00:00 |
00:48:27.19 |
-51:23:48.9 |
HIP 3556 |
31.07 |
| 2026-05-28 12:00 |
00:48:29.14 |
-51:24:06.3 |
HIP 3556 |
31.22 |
| 2026-05-29 00:00 |
00:48:31.07 |
-51:24:23.8 |
HIP 3556 |
31.36 |
| 2026-05-29 12:00 |
00:48:32.98 |
-51:24:41.5 |
HIP 3556 |
31.51 |
| 2026-05-30 00:00 |
00:48:34.87 |
-51:24:59.4 |
HIP 3556 |
31.66 |
| 2026-05-30 12:00 |
00:48:36.73 |
-51:25:17.5 |
HIP 3556 |
31.81 |
| 2026-05-31 00:00 |
00:48:38.58 |
-51:25:35.7 |
HIP 3556 |
31.96 |
| 2026-05-31 12:00 |
00:48:40.41 |
-51:25:54.1 |
HIP 3556 |
32.11 |
| 2026-06-01 00:00 |
00:48:42.21 |
-51:26:12.7 |
HIP 3556 |
32.26 |
| 2026-06-01 12:00 |
00:48:44.00 |
-51:26:31.4 |
HIP 3556 |
32.41 |
| 2026-06-02 00:00 |
00:48:45.76 |
-51:26:50.3 |
HIP 3556 |
32.56 |