메타데이터
| 항목 |
값 |
| Designation |
C/1979 S1 (Meier) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1979-10-17T08:06:07.672320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:27Z |
| Obs used |
45 |
| NEO |
- |
| M1 |
4.800 |
| K1 |
46.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1979-11-02.0000000 |
| e |
0.97299836 |
| q (au) |
1.431958 |
| a (au) |
53.032267 |
| i (deg) |
67.079393 |
| Ω (om, deg) |
297.631300 |
| ω (w, deg) |
112.564818 |
| M (ma, deg) |
0.039972 |
밝기
산란 + 전체 선형
$$
M_a = (8.190 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.190 |
| n |
6.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
11:18:57.54 |
-76:11:53.9 |
HIP 55578 |
18.85 |
| 2026-03-26 12:00 |
11:18:50.37 |
-76:11:44.8 |
HIP 55578 |
19.10 |
| 2026-03-27 00:00 |
11:18:43.22 |
-76:11:35.4 |
HIP 55578 |
19.36 |
| 2026-03-27 12:00 |
11:18:36.09 |
-76:11:25.7 |
HIP 55578 |
19.62 |
| 2026-03-28 00:00 |
11:18:28.98 |
-76:11:15.9 |
HIP 55578 |
19.89 |
| 2026-03-28 12:00 |
11:18:21.90 |
-76:11:05.7 |
HIP 55578 |
20.16 |
| 2026-03-29 00:00 |
11:18:14.84 |
-76:10:55.4 |
HIP 55578 |
20.43 |
| 2026-03-29 12:00 |
11:18:07.81 |
-76:10:44.8 |
HIP 55578 |
20.71 |
| 2026-03-30 00:00 |
11:18:00.80 |
-76:10:33.9 |
HIP 55578 |
20.99 |
| 2026-03-30 12:00 |
11:17:53.81 |
-76:10:22.8 |
HIP 55578 |
21.28 |
| 2026-03-31 00:00 |
11:17:46.86 |
-76:10:11.5 |
HIP 55257 |
21.22 |
| 2026-03-31 12:00 |
11:17:39.92 |
-76:09:59.9 |
HIP 55257 |
21.12 |
| 2026-04-01 00:00 |
11:17:33.02 |
-76:09:48.1 |
HIP 55257 |
21.04 |
| 2026-04-01 12:00 |
11:17:26.14 |
-76:09:36.0 |
HIP 55257 |
20.96 |
| 2026-04-02 00:00 |
11:17:19.30 |
-76:09:23.7 |
HIP 55257 |
20.88 |
| 2026-04-02 12:00 |
11:17:12.48 |
-76:09:11.2 |
HIP 55257 |
20.81 |
| 2026-04-03 00:00 |
11:17:05.69 |
-76:08:58.4 |
HIP 55257 |
20.75 |
| 2026-04-03 12:00 |
11:16:58.93 |
-76:08:45.4 |
HIP 55257 |
20.69 |
| 2026-04-04 00:00 |
11:16:52.20 |
-76:08:32.2 |
HIP 55257 |
20.64 |
| 2026-04-04 12:00 |
11:16:45.50 |
-76:08:18.8 |
HIP 55257 |
20.60 |
| 2026-04-05 00:00 |
11:16:38.84 |
-76:08:05.1 |
HIP 55257 |
20.56 |
| 2026-04-05 12:00 |
11:16:32.20 |
-76:07:51.2 |
HIP 54627 |
20.42 |
| 2026-04-06 00:00 |
11:16:25.60 |
-76:07:37.0 |
HIP 54627 |
20.01 |
| 2026-04-06 12:00 |
11:16:19.03 |
-76:07:22.6 |
HIP 54627 |
19.61 |
| 2026-04-07 00:00 |
11:16:12.50 |
-76:07:08.1 |
HIP 54627 |
19.21 |
| 2026-04-07 12:00 |
11:16:06.00 |
-76:06:53.2 |
HIP 54627 |
18.82 |
| 2026-04-08 00:00 |
11:15:59.54 |
-76:06:38.2 |
HIP 54627 |
18.43 |
| 2026-04-08 12:00 |
11:15:53.11 |
-76:06:22.9 |
HIP 54627 |
18.05 |
| 2026-04-09 00:00 |
11:15:46.71 |
-76:06:07.5 |
HIP 54627 |
17.68 |
| 2026-04-09 12:00 |
11:15:40.36 |
-76:05:51.8 |
HIP 54627 |
17.31 |
| 2026-04-10 00:00 |
11:15:34.04 |
-76:05:35.8 |
HIP 54627 |
16.95 |
| 2026-04-10 12:00 |
11:15:27.76 |
-76:05:19.7 |
HIP 54627 |
16.59 |
| 2026-04-11 00:00 |
11:15:21.51 |
-76:05:03.4 |
HIP 54627 |
16.25 |
| 2026-04-11 12:00 |
11:15:15.31 |
-76:04:46.8 |
HIP 54627 |
15.91 |
| 2026-04-12 00:00 |
11:15:09.14 |
-76:04:30.0 |
HIP 54627 |
15.58 |
| 2026-04-12 12:00 |
11:15:03.02 |
-76:04:13.0 |
HIP 54627 |
15.26 |
| 2026-04-13 00:00 |
11:14:56.93 |
-76:03:55.8 |
HIP 54627 |
14.95 |
| 2026-04-13 12:00 |
11:14:50.89 |
-76:03:38.4 |
HIP 54627 |
14.65 |
| 2026-04-14 00:00 |
11:14:44.88 |
-76:03:20.8 |
HIP 54627 |
14.37 |
| 2026-04-14 12:00 |
11:14:38.92 |
-76:03:03.0 |
HIP 54627 |
14.09 |
| 2026-04-15 00:00 |
11:14:33.00 |
-76:02:45.0 |
HIP 54627 |
13.83 |
| 2026-04-15 12:00 |
11:14:27.12 |
-76:02:26.8 |
HIP 54627 |
13.59 |
| 2026-04-16 00:00 |
11:14:21.29 |
-76:02:08.4 |
HIP 54627 |
13.36 |