메타데이터
| 항목 |
값 |
| Designation |
C/1992 U1 (Shoemaker) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1993-03-25T16:18:34.217280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:44Z |
| Obs used |
212 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
11.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1993-02-25.0000000 |
| e |
0.99944533 |
| q (au) |
2.313656 |
| a (au) |
4171.194372 |
| i (deg) |
65.985593 |
| Ω (om, deg) |
55.299020 |
| ω (w, deg) |
54.864153 |
| M (ma, deg) |
359.999895 |
밝기
산란 + 전체 선형
$$
M_a = (8.951 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.951 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.664 |
| k |
0.800 |
| 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 |
16:09:56.81 |
-50:23:58.5 |
HIP 79336 |
14.95 |
| 2026-03-26 12:00 |
16:09:55.18 |
-50:24:10.8 |
HIP 79336 |
15.24 |
| 2026-03-27 00:00 |
16:09:53.53 |
-50:24:23.0 |
HIP 79336 |
15.53 |
| 2026-03-27 12:00 |
16:09:51.85 |
-50:24:35.2 |
HIP 79336 |
15.82 |
| 2026-03-28 00:00 |
16:09:50.15 |
-50:24:47.1 |
HIP 79336 |
16.13 |
| 2026-03-28 12:00 |
16:09:48.42 |
-50:24:59.0 |
HIP 79336 |
16.43 |
| 2026-03-29 00:00 |
16:09:46.67 |
-50:25:10.8 |
HIP 79336 |
16.74 |
| 2026-03-29 12:00 |
16:09:44.90 |
-50:25:22.5 |
HIP 79336 |
17.06 |
| 2026-03-30 00:00 |
16:09:43.10 |
-50:25:34.0 |
HIP 79148 |
17.07 |
| 2026-03-30 12:00 |
16:09:41.28 |
-50:25:45.4 |
HIP 79148 |
16.81 |
| 2026-03-31 00:00 |
16:09:39.43 |
-50:25:56.8 |
HIP 79148 |
16.56 |
| 2026-03-31 12:00 |
16:09:37.56 |
-50:26:08.0 |
HIP 79148 |
16.31 |
| 2026-04-01 00:00 |
16:09:35.67 |
-50:26:19.0 |
HIP 79148 |
16.07 |
| 2026-04-01 12:00 |
16:09:33.75 |
-50:26:30.0 |
HIP 79148 |
15.83 |
| 2026-04-02 00:00 |
16:09:31.81 |
-50:26:40.9 |
HIP 79148 |
15.60 |
| 2026-04-02 12:00 |
16:09:29.84 |
-50:26:51.6 |
HIP 79148 |
15.38 |
| 2026-04-03 00:00 |
16:09:27.86 |
-50:27:02.2 |
HIP 79148 |
15.16 |
| 2026-04-03 12:00 |
16:09:25.85 |
-50:27:12.7 |
HIP 79148 |
14.95 |
| 2026-04-04 00:00 |
16:09:23.82 |
-50:27:23.1 |
HIP 79148 |
14.75 |
| 2026-04-04 12:00 |
16:09:21.76 |
-50:27:33.4 |
HIP 79148 |
14.55 |
| 2026-04-05 00:00 |
16:09:19.68 |
-50:27:43.5 |
HIP 79148 |
14.37 |
| 2026-04-05 12:00 |
16:09:17.58 |
-50:27:53.5 |
HIP 79148 |
14.19 |
| 2026-04-06 00:00 |
16:09:15.46 |
-50:28:03.4 |
HIP 79148 |
14.02 |
| 2026-04-06 12:00 |
16:09:13.32 |
-50:28:13.2 |
HIP 79148 |
13.87 |
| 2026-04-07 00:00 |
16:09:11.15 |
-50:28:22.8 |
HIP 79148 |
13.72 |
| 2026-04-07 12:00 |
16:09:08.97 |
-50:28:32.3 |
HIP 79148 |
13.59 |
| 2026-04-08 00:00 |
16:09:06.76 |
-50:28:41.7 |
HIP 79148 |
13.46 |
| 2026-04-08 12:00 |
16:09:04.53 |
-50:28:51.0 |
HIP 79148 |
13.35 |
| 2026-04-09 00:00 |
16:09:02.28 |
-50:29:00.1 |
HIP 79148 |
13.26 |
| 2026-04-09 12:00 |
16:09:00.00 |
-50:29:09.1 |
HIP 79148 |
13.17 |
| 2026-04-10 00:00 |
16:08:57.71 |
-50:29:18.0 |
HIP 79148 |
13.10 |
| 2026-04-10 12:00 |
16:08:55.40 |
-50:29:26.7 |
HIP 79148 |
13.05 |
| 2026-04-11 00:00 |
16:08:53.06 |
-50:29:35.3 |
HIP 79148 |
13.01 |
| 2026-04-11 12:00 |
16:08:50.71 |
-50:29:43.8 |
HIP 79148 |
12.98 |
| 2026-04-12 00:00 |
16:08:48.34 |
-50:29:52.2 |
HIP 79148 |
12.97 |
| 2026-04-12 12:00 |
16:08:45.94 |
-50:30:00.4 |
HIP 79148 |
12.98 |
| 2026-04-13 00:00 |
16:08:43.53 |
-50:30:08.5 |
HIP 79148 |
13.00 |
| 2026-04-13 12:00 |
16:08:41.09 |
-50:30:16.4 |
HIP 79148 |
13.04 |
| 2026-04-14 00:00 |
16:08:38.64 |
-50:30:24.2 |
HIP 79148 |
13.09 |
| 2026-04-14 12:00 |
16:08:36.17 |
-50:30:31.9 |
HIP 79148 |
13.16 |
| 2026-04-15 00:00 |
16:08:33.68 |
-50:30:39.5 |
HIP 79148 |
13.24 |
| 2026-04-15 12:00 |
16:08:31.17 |
-50:30:46.9 |
HIP 79148 |
13.34 |
| 2026-04-16 00:00 |
16:08:28.64 |
-50:30:54.2 |
HIP 79148 |
13.46 |