메타데이터
| 항목 |
값 |
| Designation |
P/2024 OC2 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-10-09T07:52:40.143360Z |
| Orbit solution date (soln_date, UTC) |
2025-01-14T17:42:19Z |
| Obs used |
43 |
| NEO |
Yes |
| M1 |
20.700 |
| K1 |
14.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2024-08-20.0000000 |
| e |
0.77423172 |
| q (au) |
0.592825 |
| a (au) |
2.625811 |
| i (deg) |
7.671223 |
| Ω (om, deg) |
136.619189 |
| ω (w, deg) |
258.539659 |
| M (ma, deg) |
348.342092 |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
13:57:54.03 |
-02:29:13.2 |
HIP 68210 |
10.11 |
| 2026-03-26 12:00 |
13:57:32.27 |
-02:26:33.5 |
HIP 68210 |
9.10 |
| 2026-03-27 00:00 |
13:57:10.36 |
-02:23:53.7 |
HIP 68210 |
11.71 |
| 2026-03-27 12:00 |
13:56:48.31 |
-02:21:13.7 |
HIP 68210 |
16.34 |
| 2026-03-28 00:00 |
13:56:26.12 |
-02:18:33.6 |
HIP 68210 |
21.75 |
| 2026-03-28 12:00 |
13:56:03.80 |
-02:15:53.4 |
HIP 67946 |
19.26 |
| 2026-03-29 00:00 |
13:55:41.35 |
-02:13:13.0 |
HIP 67946 |
15.65 |
| 2026-03-29 12:00 |
13:55:18.77 |
-02:10:32.6 |
HIP 67946 |
14.00 |
| 2026-03-30 00:00 |
13:54:56.08 |
-02:07:52.1 |
HIP 67946 |
14.99 |
| 2026-03-30 12:00 |
13:54:33.26 |
-02:05:11.6 |
HIP 67875 |
9.73 |
| 2026-03-31 00:00 |
13:54:10.32 |
-02:02:31.1 |
HIP 67875 |
4.65 |
| 2026-03-31 12:00 |
13:53:47.27 |
-01:59:50.7 |
HIP 67875 |
5.37 |
| 2026-04-01 00:00 |
13:53:24.12 |
-01:57:10.2 |
HIP 67875 |
10.83 |
| 2026-04-01 12:00 |
13:53:00.86 |
-01:54:29.9 |
HIP 67875 |
16.97 |
| 2026-04-02 00:00 |
13:52:37.49 |
-01:51:49.6 |
HIP 67709 |
22.15 |
| 2026-04-02 12:00 |
13:52:14.03 |
-01:49:09.5 |
HIP 67709 |
18.81 |
| 2026-04-03 00:00 |
13:51:50.47 |
-01:46:29.5 |
HIP 67709 |
17.33 |
| 2026-04-03 12:00 |
13:51:26.82 |
-01:43:49.7 |
HIP 67709 |
18.19 |
| 2026-04-04 00:00 |
13:51:03.09 |
-01:41:10.0 |
HIP 67709 |
21.13 |
| 2026-04-04 12:00 |
13:50:39.27 |
-01:38:30.6 |
HIP 67412 |
25.41 |
| 2026-04-05 00:00 |
13:50:15.37 |
-01:35:51.5 |
HIP 67412 |
19.27 |
| 2026-04-05 12:00 |
13:49:51.40 |
-01:33:12.6 |
HIP 67412 |
13.48 |
| 2026-04-06 00:00 |
13:49:27.35 |
-01:30:34.0 |
HIP 67412 |
8.82 |
| 2026-04-06 12:00 |
13:49:03.23 |
-01:27:55.7 |
HIP 67412 |
7.74 |
| 2026-04-07 00:00 |
13:48:39.05 |
-01:25:17.7 |
HIP 67412 |
11.34 |
| 2026-04-07 12:00 |
13:48:14.81 |
-01:22:40.1 |
HIP 67339 |
12.23 |
| 2026-04-08 00:00 |
13:47:50.51 |
-01:20:03.0 |
HIP 67339 |
15.17 |
| 2026-04-08 12:00 |
13:47:26.15 |
-01:17:26.2 |
HIP 67339 |
19.96 |
| 2026-04-09 00:00 |
13:47:01.75 |
-01:14:49.9 |
HIP 67339 |
25.58 |
| 2026-04-09 12:00 |
13:46:37.30 |
-01:12:14.0 |
HIP 67373 |
30.87 |
| 2026-04-10 00:00 |
13:46:12.81 |
-01:09:38.6 |
HIP 67088 |
28.96 |
| 2026-04-10 12:00 |
13:45:48.29 |
-01:07:03.8 |
HIP 67088 |
23.48 |
| 2026-04-11 00:00 |
13:45:23.73 |
-01:04:29.5 |
HIP 67088 |
18.79 |
| 2026-04-11 12:00 |
13:44:59.14 |
-01:01:55.8 |
HIP 67088 |
15.60 |
| 2026-04-12 00:00 |
13:44:34.52 |
-00:59:22.6 |
HIP 67088 |
14.93 |
| 2026-04-12 12:00 |
13:44:09.88 |
-00:56:50.1 |
HIP 67088 |
17.08 |
| 2026-04-13 00:00 |
13:43:45.23 |
-00:54:18.3 |
HIP 67088 |
21.20 |
| 2026-04-13 12:00 |
13:43:20.56 |
-00:51:47.1 |
HIP 66927 |
21.46 |
| 2026-04-14 00:00 |
13:42:55.89 |
-00:49:16.6 |
HIP 66927 |
23.21 |
| 2026-04-14 12:00 |
13:42:31.20 |
-00:46:46.8 |
HIP 66927 |
26.55 |
| 2026-04-15 00:00 |
13:42:06.52 |
-00:44:17.8 |
HIP 66927 |
30.96 |
| 2026-04-15 12:00 |
13:41:41.84 |
-00:41:49.5 |
HIP 66840 |
34.32 |
| 2026-04-16 00:00 |
13:41:17.17 |
-00:39:22.0 |
HIP 66840 |
33.12 |