메타데이터
| 항목 |
값 |
| Designation |
C/1973 H1 (Huchra) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1973-03-11T12:39:25.813440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:22Z |
| Obs used |
26 |
| NEO |
- |
| M1 |
9.300 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1973-05-30.0000000 |
| e |
0.97294134 |
| q (au) |
2.384240 |
| a (au) |
88.113743 |
| i (deg) |
48.329625 |
| Ω (om, deg) |
57.840302 |
| ω (w, deg) |
123.470767 |
| M (ma, deg) |
0.094701 |
밝기
산란 + 전체 선형
$$
M_a = (9.905 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.905 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-05-12 00:00 |
01:06:34.93 |
-43:07:12.0 |
HIP 5116 |
18.89 |
| 2026-05-12 12:00 |
01:06:36.77 |
-43:07:16.6 |
HIP 5116 |
19.15 |
| 2026-05-13 00:00 |
01:06:38.60 |
-43:07:21.3 |
HIP 5116 |
19.41 |
| 2026-05-13 12:00 |
01:06:40.42 |
-43:07:26.2 |
HIP 5116 |
19.68 |
| 2026-05-14 00:00 |
01:06:42.23 |
-43:07:31.3 |
HIP 5116 |
19.95 |
| 2026-05-14 12:00 |
01:06:44.03 |
-43:07:36.5 |
HIP 5116 |
20.23 |
| 2026-05-15 00:00 |
01:06:45.82 |
-43:07:41.9 |
HIP 5116 |
20.51 |
| 2026-05-15 12:00 |
01:06:47.59 |
-43:07:47.5 |
HIP 5116 |
20.79 |
| 2026-05-16 00:00 |
01:06:49.36 |
-43:07:53.2 |
HIP 5116 |
21.07 |
| 2026-05-16 12:00 |
01:06:51.12 |
-43:07:59.1 |
HIP 5116 |
21.36 |
| 2026-05-17 00:00 |
01:06:52.87 |
-43:08:05.2 |
HIP 5116 |
21.64 |
| 2026-05-17 12:00 |
01:06:54.60 |
-43:08:11.4 |
HIP 5116 |
21.93 |
| 2026-05-18 00:00 |
01:06:56.33 |
-43:08:17.8 |
HIP 5116 |
22.22 |
| 2026-05-18 12:00 |
01:06:58.04 |
-43:08:24.3 |
HIP 5116 |
22.52 |
| 2026-05-19 00:00 |
01:06:59.74 |
-43:08:31.0 |
HIP 5116 |
22.81 |
| 2026-05-19 12:00 |
01:07:01.43 |
-43:08:37.9 |
HIP 5116 |
23.11 |
| 2026-05-20 00:00 |
01:07:03.11 |
-43:08:44.9 |
HIP 5116 |
23.40 |
| 2026-05-20 12:00 |
01:07:04.78 |
-43:08:52.1 |
HIP 5116 |
23.70 |
| 2026-05-21 00:00 |
01:07:06.44 |
-43:08:59.4 |
HIP 5400 |
23.54 |
| 2026-05-21 12:00 |
01:07:08.09 |
-43:09:06.9 |
HIP 5400 |
23.31 |
| 2026-05-22 00:00 |
01:07:09.72 |
-43:09:14.6 |
HIP 5400 |
23.09 |
| 2026-05-22 12:00 |
01:07:11.34 |
-43:09:22.4 |
HIP 5400 |
22.87 |
| 2026-05-23 00:00 |
01:07:12.95 |
-43:09:30.3 |
HIP 5400 |
22.65 |
| 2026-05-23 12:00 |
01:07:14.55 |
-43:09:38.5 |
HIP 5400 |
22.44 |
| 2026-05-24 00:00 |
01:07:16.13 |
-43:09:46.7 |
HIP 5400 |
22.24 |
| 2026-05-24 12:00 |
01:07:17.70 |
-43:09:55.2 |
HIP 5400 |
22.05 |
| 2026-05-25 00:00 |
01:07:19.26 |
-43:10:03.7 |
HIP 5400 |
21.86 |
| 2026-05-25 12:00 |
01:07:20.81 |
-43:10:12.5 |
HIP 5400 |
21.67 |
| 2026-05-26 00:00 |
01:07:22.35 |
-43:10:21.3 |
HIP 5400 |
21.50 |
| 2026-05-26 12:00 |
01:07:23.87 |
-43:10:30.4 |
HIP 5400 |
21.32 |
| 2026-05-27 00:00 |
01:07:25.38 |
-43:10:39.6 |
HIP 5400 |
21.16 |
| 2026-05-27 12:00 |
01:07:26.88 |
-43:10:48.9 |
HIP 5400 |
21.00 |
| 2026-05-28 00:00 |
01:07:28.36 |
-43:10:58.4 |
HIP 5400 |
20.85 |
| 2026-05-28 12:00 |
01:07:29.83 |
-43:11:08.0 |
HIP 5400 |
20.71 |
| 2026-05-29 00:00 |
01:07:31.29 |
-43:11:17.7 |
HIP 5400 |
20.57 |
| 2026-05-29 12:00 |
01:07:32.73 |
-43:11:27.7 |
HIP 5400 |
20.44 |
| 2026-05-30 00:00 |
01:07:34.16 |
-43:11:37.7 |
HIP 5400 |
20.32 |
| 2026-05-30 12:00 |
01:07:35.58 |
-43:11:47.9 |
HIP 5400 |
20.21 |
| 2026-05-31 00:00 |
01:07:36.98 |
-43:11:58.3 |
HIP 5400 |
20.10 |
| 2026-05-31 12:00 |
01:07:38.37 |
-43:12:08.8 |
HIP 5400 |
20.00 |
| 2026-06-01 00:00 |
01:07:39.75 |
-43:12:19.4 |
HIP 5400 |
19.91 |
| 2026-06-01 12:00 |
01:07:41.11 |
-43:12:30.2 |
HIP 5400 |
19.82 |
| 2026-06-02 00:00 |
01:07:42.46 |
-43:12:41.1 |
HIP 5400 |
19.75 |