메타데이터
| 항목 |
값 |
| Designation |
200P/Larsen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-08-25T00:09:36.175680Z |
| Orbit solution date (soln_date, UTC) |
2022-02-03T20:43:19Z |
| Obs used |
610 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
17.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-01-06.0000000 |
| e |
0.33323678 |
| q (au) |
3.272199 |
| a (au) |
4.907588 |
| i (deg) |
12.121060 |
| Ω (om, deg) |
234.819218 |
| ω (w, deg) |
133.693288 |
| M (ma, deg) |
338.966942 |
밝기
산란 + 전체 선형
$$
M_a = (14.603 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.603 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.501 |
| 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 |
14:00:23.70 |
-18:35:25.7 |
HIP 68314 |
19.07 |
| 2026-03-26 12:00 |
14:00:12.29 |
-18:34:21.6 |
HIP 68314 |
16.54 |
| 2026-03-27 00:00 |
14:00:00.78 |
-18:33:16.8 |
HIP 68314 |
14.14 |
| 2026-03-27 12:00 |
13:59:49.17 |
-18:32:11.0 |
HIP 68314 |
11.97 |
| 2026-03-28 00:00 |
13:59:37.47 |
-18:31:04.5 |
HIP 68314 |
10.20 |
| 2026-03-28 12:00 |
13:59:25.68 |
-18:29:57.1 |
HIP 68314 |
9.08 |
| 2026-03-29 00:00 |
13:59:13.79 |
-18:28:48.9 |
HIP 68314 |
8.89 |
| 2026-03-29 12:00 |
13:59:01.82 |
-18:27:39.9 |
HIP 68314 |
9.72 |
| 2026-03-30 00:00 |
13:58:49.76 |
-18:26:30.1 |
HIP 68314 |
11.36 |
| 2026-03-30 12:00 |
13:58:37.61 |
-18:25:19.5 |
HIP 68314 |
13.54 |
| 2026-03-31 00:00 |
13:58:25.38 |
-18:24:08.1 |
HIP 68314 |
16.05 |
| 2026-03-31 12:00 |
13:58:13.07 |
-18:22:55.9 |
HIP 68314 |
18.77 |
| 2026-04-01 00:00 |
13:58:00.67 |
-18:21:42.9 |
HIP 68314 |
21.64 |
| 2026-04-01 12:00 |
13:57:48.20 |
-18:20:29.2 |
HIP 68314 |
24.60 |
| 2026-04-02 00:00 |
13:57:35.65 |
-18:19:14.6 |
HIP 68023 |
26.15 |
| 2026-04-02 12:00 |
13:57:23.03 |
-18:17:59.4 |
HIP 68023 |
23.00 |
| 2026-04-03 00:00 |
13:57:10.33 |
-18:16:43.3 |
HIP 68023 |
19.86 |
| 2026-04-03 12:00 |
13:56:57.56 |
-18:15:26.5 |
HIP 68023 |
16.76 |
| 2026-04-04 00:00 |
13:56:44.72 |
-18:14:09.0 |
HIP 68023 |
13.73 |
| 2026-04-04 12:00 |
13:56:31.81 |
-18:12:50.8 |
HIP 68023 |
10.85 |
| 2026-04-05 00:00 |
13:56:18.83 |
-18:11:31.8 |
HIP 68023 |
8.30 |
| 2026-04-05 12:00 |
13:56:05.80 |
-18:10:12.1 |
HIP 68023 |
6.51 |
| 2026-04-06 00:00 |
13:55:52.70 |
-18:08:51.7 |
HIP 68023 |
6.23 |
| 2026-04-06 12:00 |
13:55:39.54 |
-18:07:30.6 |
HIP 68023 |
7.64 |
| 2026-04-07 00:00 |
13:55:26.32 |
-18:06:08.8 |
HIP 68023 |
10.07 |
| 2026-04-07 12:00 |
13:55:13.04 |
-18:04:46.3 |
HIP 68023 |
12.98 |
| 2026-04-08 00:00 |
13:54:59.71 |
-18:03:23.2 |
HIP 68023 |
16.12 |
| 2026-04-08 12:00 |
13:54:46.33 |
-18:01:59.4 |
HIP 67938 |
17.96 |
| 2026-04-09 00:00 |
13:54:32.90 |
-18:00:34.9 |
HIP 67938 |
16.94 |
| 2026-04-09 12:00 |
13:54:19.42 |
-17:59:09.8 |
HIP 67938 |
16.60 |
| 2026-04-10 00:00 |
13:54:05.89 |
-17:57:44.1 |
HIP 67938 |
16.99 |
| 2026-04-10 12:00 |
13:53:52.32 |
-17:56:17.7 |
HIP 67938 |
18.08 |
| 2026-04-11 00:00 |
13:53:38.70 |
-17:54:50.7 |
HIP 67938 |
19.75 |
| 2026-04-11 12:00 |
13:53:25.05 |
-17:53:23.1 |
HIP 67938 |
21.87 |
| 2026-04-12 00:00 |
13:53:11.36 |
-17:51:54.9 |
HIP 67938 |
24.35 |
| 2026-04-12 12:00 |
13:52:57.63 |
-17:50:26.1 |
HIP 67938 |
27.07 |
| 2026-04-13 00:00 |
13:52:43.87 |
-17:48:56.8 |
HIP 67938 |
29.99 |
| 2026-04-13 12:00 |
13:52:30.07 |
-17:47:26.8 |
HIP 67938 |
33.05 |
| 2026-04-14 00:00 |
13:52:16.25 |
-17:45:56.4 |
HIP 67761 |
35.46 |
| 2026-04-14 12:00 |
13:52:02.40 |
-17:44:25.3 |
HIP 67641 |
37.64 |
| 2026-04-15 00:00 |
13:51:48.52 |
-17:42:53.8 |
HIP 67494 |
37.36 |
| 2026-04-15 12:00 |
13:51:34.63 |
-17:41:21.7 |
HIP 67494 |
36.11 |
| 2026-04-16 00:00 |
13:51:20.71 |
-17:39:49.2 |
HIP 67494 |
35.19 |