C/1992 U1 (Shoemaker)
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) |
| 2026-02-03 00:00 |
16:10:18.03 |
-49:56:46.4 |
HIP 79172 |
7.52 |
| 2026-02-03 12:00 |
16:10:19.23 |
-49:57:04.0 |
HIP 79172 |
7.71 |
| 2026-02-04 00:00 |
16:10:20.41 |
-49:57:21.7 |
HIP 79172 |
7.92 |
| 2026-02-04 12:00 |
16:10:21.56 |
-49:57:39.3 |
HIP 79172 |
8.13 |
| 2026-02-05 00:00 |
16:10:22.68 |
-49:57:57.0 |
HIP 79172 |
8.34 |
| 2026-02-05 12:00 |
16:10:23.78 |
-49:58:14.6 |
HIP 79172 |
8.56 |
| 2026-02-06 00:00 |
16:10:24.85 |
-49:58:32.3 |
HIP 79172 |
8.78 |
| 2026-02-06 12:00 |
16:10:25.90 |
-49:58:49.9 |
HIP 79172 |
9.00 |
| 2026-02-07 00:00 |
16:10:26.91 |
-49:59:07.6 |
HIP 79172 |
9.23 |
| 2026-02-07 12:00 |
16:10:27.90 |
-49:59:25.3 |
HIP 79172 |
9.46 |
| 2026-02-08 00:00 |
16:10:28.87 |
-49:59:42.9 |
HIP 79172 |
9.69 |
| 2026-02-08 12:00 |
16:10:29.80 |
-50:00:00.6 |
HIP 79172 |
9.93 |
| 2026-02-09 00:00 |
16:10:30.71 |
-50:00:18.2 |
HIP 79172 |
10.16 |
| 2026-02-09 12:00 |
16:10:31.59 |
-50:00:35.9 |
HIP 79172 |
10.40 |
| 2026-02-10 00:00 |
16:10:32.44 |
-50:00:53.5 |
HIP 79172 |
10.63 |
| 2026-02-10 12:00 |
16:10:33.27 |
-50:01:11.2 |
HIP 79172 |
10.87 |
| 2026-02-11 00:00 |
16:10:34.07 |
-50:01:28.8 |
HIP 79172 |
11.11 |
| 2026-02-11 12:00 |
16:10:34.84 |
-50:01:46.4 |
HIP 79172 |
11.34 |
| 2026-02-12 00:00 |
16:10:35.58 |
-50:02:04.0 |
HIP 79172 |
11.58 |
| 2026-02-12 12:00 |
16:10:36.30 |
-50:02:21.6 |
HIP 79172 |
11.82 |
| 2026-02-13 00:00 |
16:10:36.98 |
-50:02:39.2 |
HIP 79172 |
12.05 |
| 2026-02-13 12:00 |
16:10:37.64 |
-50:02:56.7 |
HIP 79172 |
12.29 |
| 2026-02-14 00:00 |
16:10:38.27 |
-50:03:14.3 |
HIP 79172 |
12.52 |
| 2026-02-14 12:00 |
16:10:38.87 |
-50:03:31.8 |
HIP 79172 |
12.75 |
| 2026-02-15 00:00 |
16:10:39.45 |
-50:03:49.3 |
HIP 79172 |
12.99 |
| 2026-02-15 12:00 |
16:10:39.99 |
-50:04:06.8 |
HIP 79172 |
13.22 |
| 2026-02-16 00:00 |
16:10:40.51 |
-50:04:24.3 |
HIP 79172 |
13.45 |
| 2026-02-16 12:00 |
16:10:41.00 |
-50:04:41.7 |
HIP 79172 |
13.68 |
| 2026-02-17 00:00 |
16:10:41.46 |
-50:04:59.1 |
HIP 79172 |
13.91 |
| 2026-02-17 12:00 |
16:10:41.89 |
-50:05:16.5 |
HIP 79172 |
14.13 |
| 2026-02-18 00:00 |
16:10:42.30 |
-50:05:33.9 |
HIP 79172 |
14.36 |
| 2026-02-18 12:00 |
16:10:42.67 |
-50:05:51.2 |
HIP 79172 |
14.58 |
| 2026-02-19 00:00 |
16:10:43.02 |
-50:06:08.5 |
HIP 79172 |
14.81 |
| 2026-02-19 12:00 |
16:10:43.34 |
-50:06:25.8 |
HIP 79172 |
15.03 |
| 2026-02-20 00:00 |
16:10:43.63 |
-50:06:43.1 |
HIP 79172 |
15.25 |
| 2026-02-20 12:00 |
16:10:43.89 |
-50:07:00.3 |
HIP 79172 |
15.47 |
| 2026-02-21 00:00 |
16:10:44.12 |
-50:07:17.5 |
HIP 79172 |
15.68 |
| 2026-02-21 12:00 |
16:10:44.32 |
-50:07:34.6 |
HIP 79172 |
15.90 |
| 2026-02-22 00:00 |
16:10:44.49 |
-50:07:51.7 |
HIP 79336 |
15.80 |
| 2026-02-22 12:00 |
16:10:44.64 |
-50:08:08.8 |
HIP 79336 |
15.54 |
| 2026-02-23 00:00 |
16:10:44.76 |
-50:08:25.8 |
HIP 79336 |
15.28 |
| 2026-02-23 12:00 |
16:10:44.84 |
-50:08:42.8 |
HIP 79336 |
15.02 |
| 2026-02-24 00:00 |
16:10:44.90 |
-50:08:59.8 |
HIP 79336 |
14.77 |