메타데이터
| 항목 |
값 |
| Designation |
C/1988 B1 (Shoemaker) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1987-03-20T04:30:14.852160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:36Z |
| Obs used |
63 |
| NEO |
- |
| M1 |
5.600 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1988-07-24.0000000 |
| e |
1.00306479 |
| q (au) |
5.030939 |
| a (au) |
-1641.528202 |
| i (deg) |
80.568294 |
| Ω (om, deg) |
325.168069 |
| ω (w, deg) |
124.223736 |
| M (ma, deg) |
0.007288 |
밝기
산란 + 전체 선형
$$
M_a = (8.483 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.483 |
| n |
2.000 |
| gf |
0.998 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
06:58:52.71 |
-74:00:57.0 |
HIP 33448 |
19.61 |
| 2026-03-26 12:00 |
06:58:51.33 |
-74:00:29.1 |
HIP 33448 |
19.14 |
| 2026-03-27 00:00 |
06:58:50.02 |
-74:00:01.3 |
HIP 33448 |
18.67 |
| 2026-03-27 12:00 |
06:58:48.78 |
-73:59:33.4 |
HIP 33448 |
18.21 |
| 2026-03-28 00:00 |
06:58:47.59 |
-73:59:05.5 |
HIP 33448 |
17.74 |
| 2026-03-28 12:00 |
06:58:46.47 |
-73:58:37.5 |
HIP 33448 |
17.28 |
| 2026-03-29 00:00 |
06:58:45.41 |
-73:58:09.5 |
HIP 33448 |
16.82 |
| 2026-03-29 12:00 |
06:58:44.41 |
-73:57:41.5 |
HIP 33448 |
16.36 |
| 2026-03-30 00:00 |
06:58:43.47 |
-73:57:13.5 |
HIP 33448 |
15.91 |
| 2026-03-30 12:00 |
06:58:42.59 |
-73:56:45.4 |
HIP 33448 |
15.45 |
| 2026-03-31 00:00 |
06:58:41.77 |
-73:56:17.3 |
HIP 33448 |
15.00 |
| 2026-03-31 12:00 |
06:58:41.02 |
-73:55:49.2 |
HIP 33448 |
14.55 |
| 2026-04-01 00:00 |
06:58:40.33 |
-73:55:21.1 |
HIP 33448 |
14.11 |
| 2026-04-01 12:00 |
06:58:39.70 |
-73:54:53.0 |
HIP 33448 |
13.66 |
| 2026-04-02 00:00 |
06:58:39.13 |
-73:54:24.8 |
HIP 33448 |
13.23 |
| 2026-04-02 12:00 |
06:58:38.62 |
-73:53:56.7 |
HIP 33448 |
12.79 |
| 2026-04-03 00:00 |
06:58:38.17 |
-73:53:28.5 |
HIP 33448 |
12.36 |
| 2026-04-03 12:00 |
06:58:37.78 |
-73:53:00.4 |
HIP 33448 |
11.93 |
| 2026-04-04 00:00 |
06:58:37.45 |
-73:52:32.2 |
HIP 33448 |
11.51 |
| 2026-04-04 12:00 |
06:58:37.19 |
-73:52:04.0 |
HIP 33448 |
11.10 |
| 2026-04-05 00:00 |
06:58:36.98 |
-73:51:35.9 |
HIP 33448 |
10.69 |
| 2026-04-05 12:00 |
06:58:36.84 |
-73:51:07.7 |
HIP 33448 |
10.29 |
| 2026-04-06 00:00 |
06:58:36.75 |
-73:50:39.6 |
HIP 33448 |
9.90 |
| 2026-04-06 12:00 |
06:58:36.73 |
-73:50:11.4 |
HIP 33448 |
9.52 |
| 2026-04-07 00:00 |
06:58:36.77 |
-73:49:43.3 |
HIP 33448 |
9.15 |
| 2026-04-07 12:00 |
06:58:36.86 |
-73:49:15.1 |
HIP 33448 |
8.80 |
| 2026-04-08 00:00 |
06:58:37.02 |
-73:48:47.0 |
HIP 33448 |
8.45 |
| 2026-04-08 12:00 |
06:58:37.23 |
-73:48:18.9 |
HIP 33448 |
8.12 |
| 2026-04-09 00:00 |
06:58:37.51 |
-73:47:50.8 |
HIP 33448 |
7.81 |
| 2026-04-09 12:00 |
06:58:37.85 |
-73:47:22.8 |
HIP 33448 |
7.52 |
| 2026-04-10 00:00 |
06:58:38.24 |
-73:46:54.7 |
HIP 33448 |
7.25 |
| 2026-04-10 12:00 |
06:58:38.70 |
-73:46:26.7 |
HIP 33448 |
7.01 |
| 2026-04-11 00:00 |
06:58:39.21 |
-73:45:58.7 |
HIP 33448 |
6.79 |
| 2026-04-11 12:00 |
06:58:39.78 |
-73:45:30.7 |
HIP 33448 |
6.61 |
| 2026-04-12 00:00 |
06:58:40.41 |
-73:45:02.8 |
HIP 33448 |
6.45 |
| 2026-04-12 12:00 |
06:58:41.10 |
-73:44:34.9 |
HIP 33448 |
6.33 |
| 2026-04-13 00:00 |
06:58:41.85 |
-73:44:07.0 |
HIP 33448 |
6.25 |
| 2026-04-13 12:00 |
06:58:42.66 |
-73:43:39.2 |
HIP 33448 |
6.21 |
| 2026-04-14 00:00 |
06:58:43.53 |
-73:43:11.4 |
HIP 33448 |
6.20 |
| 2026-04-14 12:00 |
06:58:44.45 |
-73:42:43.7 |
HIP 33448 |
6.24 |
| 2026-04-15 00:00 |
06:58:45.44 |
-73:42:16.0 |
HIP 33448 |
6.31 |
| 2026-04-15 12:00 |
06:58:46.48 |
-73:41:48.3 |
HIP 33448 |
6.42 |
| 2026-04-16 00:00 |
06:58:47.57 |
-73:41:20.7 |
HIP 33448 |
6.57 |