메타데이터
| 항목 |
값 |
| Designation |
280P/Larsen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-12-11T05:00:01.716480Z |
| Orbit solution date (soln_date, UTC) |
2024-09-11T13:42:29Z |
| Obs used |
166 |
| NEO |
- |
| M1 |
15.200 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2009-07-09.0000000 |
| e |
0.41769582 |
| q (au) |
2.627996 |
| a (au) |
4.513099 |
| i (deg) |
11.779921 |
| Ω (om, deg) |
131.491111 |
| ω (w, deg) |
104.855623 |
| M (ma, deg) |
193.854280 |
밝기
산란 + 전체 선형
$$
M_a = (14.698 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.698 |
| n |
6.000 |
| gf |
0.979 |
| gb |
-1.000 |
| k |
0.998 |
| δ90 |
9.779 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
01:01:52.68 |
-03:04:44.7 |
HIP 4808 |
31.40 |
| 2026-03-26 12:00 |
01:02:15.66 |
-03:02:24.1 |
HIP 4808 |
34.61 |
| 2026-03-27 00:00 |
01:02:38.64 |
-03:00:03.8 |
HIP 4808 |
38.56 |
| 2026-03-27 12:00 |
01:03:01.63 |
-02:57:43.8 |
HIP 5031 |
41.58 |
| 2026-03-28 00:00 |
01:03:24.64 |
-02:55:24.1 |
HIP 5031 |
36.83 |
| 2026-03-28 12:00 |
01:03:47.64 |
-02:53:04.7 |
HIP 5031 |
32.59 |
| 2026-03-29 00:00 |
01:04:10.66 |
-02:50:45.6 |
HIP 5031 |
29.06 |
| 2026-03-29 12:00 |
01:04:33.68 |
-02:48:26.9 |
HIP 5031 |
26.53 |
| 2026-03-30 00:00 |
01:04:56.71 |
-02:46:08.4 |
HIP 5031 |
25.31 |
| 2026-03-30 12:00 |
01:05:19.74 |
-02:43:50.3 |
HIP 5031 |
25.58 |
| 2026-03-31 00:00 |
01:05:42.78 |
-02:41:32.5 |
HIP 5031 |
27.29 |
| 2026-03-31 12:00 |
01:06:05.82 |
-02:39:15.0 |
HIP 5290 |
24.49 |
| 2026-04-01 00:00 |
01:06:28.87 |
-02:36:57.8 |
HIP 5290 |
19.69 |
| 2026-04-01 12:00 |
01:06:51.92 |
-02:34:41.0 |
HIP 5290 |
15.87 |
| 2026-04-02 00:00 |
01:07:14.97 |
-02:32:24.5 |
HIP 5290 |
13.88 |
| 2026-04-02 12:00 |
01:07:38.02 |
-02:30:08.4 |
HIP 5290 |
14.49 |
| 2026-04-03 00:00 |
01:08:01.08 |
-02:27:52.6 |
HIP 5290 |
17.43 |
| 2026-04-03 12:00 |
01:08:24.14 |
-02:25:37.1 |
HIP 5290 |
21.77 |
| 2026-04-04 00:00 |
01:08:47.20 |
-02:23:22.0 |
HIP 5360 |
20.13 |
| 2026-04-04 12:00 |
01:09:10.26 |
-02:21:07.3 |
HIP 5360 |
19.96 |
| 2026-04-05 00:00 |
01:09:33.32 |
-02:18:52.9 |
HIP 5360 |
21.63 |
| 2026-04-05 12:00 |
01:09:56.38 |
-02:16:38.9 |
HIP 5360 |
24.78 |
| 2026-04-06 00:00 |
01:10:19.43 |
-02:14:25.2 |
HIP 5594 |
21.02 |
| 2026-04-06 12:00 |
01:10:42.49 |
-02:12:11.9 |
HIP 5594 |
15.52 |
| 2026-04-07 00:00 |
01:11:05.54 |
-02:09:59.0 |
HIP 5594 |
10.77 |
| 2026-04-07 12:00 |
01:11:28.59 |
-02:07:46.4 |
HIP 5594 |
8.19 |
| 2026-04-08 00:00 |
01:11:51.64 |
-02:05:34.3 |
HIP 5594 |
9.70 |
| 2026-04-08 12:00 |
01:12:14.69 |
-02:03:22.5 |
HIP 5594 |
14.04 |
| 2026-04-09 00:00 |
01:12:37.73 |
-02:01:11.1 |
HIP 5697 |
13.99 |
| 2026-04-09 12:00 |
01:13:00.76 |
-01:59:00.1 |
HIP 5697 |
8.58 |
| 2026-04-10 00:00 |
01:13:23.79 |
-01:56:49.5 |
HIP 5697 |
5.25 |
| 2026-04-10 12:00 |
01:13:46.82 |
-01:54:39.3 |
HIP 5697 |
7.56 |
| 2026-04-11 00:00 |
01:14:09.83 |
-01:52:29.5 |
HIP 5697 |
12.74 |
| 2026-04-11 12:00 |
01:14:32.84 |
-01:50:20.1 |
HIP 5771 |
17.95 |
| 2026-04-12 00:00 |
01:14:55.85 |
-01:48:11.1 |
HIP 5771 |
22.62 |
| 2026-04-12 12:00 |
01:15:18.84 |
-01:46:02.6 |
HIP 5956 |
21.44 |
| 2026-04-13 00:00 |
01:15:41.83 |
-01:43:54.5 |
HIP 5956 |
15.32 |
| 2026-04-13 12:00 |
01:16:04.80 |
-01:41:46.7 |
HIP 5956 |
9.21 |
| 2026-04-14 00:00 |
01:16:27.77 |
-01:39:39.5 |
HIP 5956 |
3.15 |
| 2026-04-14 12:00 |
01:16:50.73 |
-01:37:32.6 |
HIP 5956 |
3.15 |
| 2026-04-15 00:00 |
01:17:13.67 |
-01:35:26.2 |
HIP 5956 |
9.20 |
| 2026-04-15 12:00 |
01:17:36.60 |
-01:33:20.3 |
HIP 5956 |
15.29 |
| 2026-04-16 00:00 |
01:17:59.52 |
-01:31:14.8 |
HIP 5956 |
21.38 |