메타데이터
| 항목 |
값 |
| Designation |
P/2024 O2 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-04-20T05:24:07.672320Z |
| Orbit solution date (soln_date, UTC) |
2024-10-26T00:12:24Z |
| Obs used |
62 |
| NEO |
- |
| M1 |
12.500 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-07-28T12:51:01.324800Z |
| Discovery magnitude (MPC) |
20.88 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2024-08-25.0000000 |
| e |
0.49949412 |
| q (au) |
3.697574 |
| a (au) |
7.387674 |
| i (deg) |
28.973263 |
| Ω (om, deg) |
6.806464 |
| ω (w, deg) |
310.788811 |
| M (ma, deg) |
6.222656 |
밝기
산란 + 전체 선형
$$
M_a = (13.463 + 2.815\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.463 |
| n |
2.815 |
| gf |
0.999 |
| gb |
-0.865 |
| 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) |
| 2026-09-20 00:00 |
03:45:47.24 |
+44:42:33.5 |
HIP 17434 |
20.85 |
| 2026-09-20 12:00 |
03:45:42.23 |
+44:44:50.0 |
HIP 17434 |
18.99 |
| 2026-09-21 00:00 |
03:45:36.99 |
+44:47:05.8 |
HIP 17434 |
17.24 |
| 2026-09-21 12:00 |
03:45:31.53 |
+44:49:20.7 |
HIP 17434 |
15.65 |
| 2026-09-22 00:00 |
03:45:25.84 |
+44:51:34.9 |
HIP 17434 |
14.26 |
| 2026-09-22 12:00 |
03:45:19.92 |
+44:53:48.2 |
HIP 17434 |
13.15 |
| 2026-09-23 00:00 |
03:45:13.78 |
+44:56:00.8 |
HIP 17434 |
12.39 |
| 2026-09-23 12:00 |
03:45:07.41 |
+44:58:12.5 |
HIP 17434 |
12.05 |
| 2026-09-24 00:00 |
03:45:00.81 |
+45:00:23.4 |
HIP 17434 |
12.18 |
| 2026-09-24 12:00 |
03:44:54.00 |
+45:02:33.4 |
HIP 17434 |
12.75 |
| 2026-09-25 00:00 |
03:44:46.95 |
+45:04:42.5 |
HIP 17434 |
13.72 |
| 2026-09-25 12:00 |
03:44:39.68 |
+45:06:50.7 |
HIP 17434 |
15.01 |
| 2026-09-26 00:00 |
03:44:32.19 |
+45:08:58.1 |
HIP 17554 |
16.35 |
| 2026-09-26 12:00 |
03:44:24.48 |
+45:11:04.5 |
HIP 17554 |
15.85 |
| 2026-09-27 00:00 |
03:44:16.54 |
+45:13:10.1 |
HIP 17554 |
15.77 |
| 2026-09-27 12:00 |
03:44:08.38 |
+45:15:14.7 |
HIP 17554 |
16.14 |
| 2026-09-28 00:00 |
03:44:00.00 |
+45:17:18.3 |
HIP 17554 |
16.91 |
| 2026-09-28 12:00 |
03:43:51.38 |
+45:19:21.0 |
HIP 17307 |
17.84 |
| 2026-09-29 00:00 |
03:43:42.55 |
+45:21:22.8 |
HIP 17307 |
15.67 |
| 2026-09-29 12:00 |
03:43:33.50 |
+45:23:23.5 |
HIP 17307 |
13.61 |
| 2026-09-30 00:00 |
03:43:24.23 |
+45:25:23.3 |
HIP 17307 |
11.71 |
| 2026-09-30 12:00 |
03:43:14.74 |
+45:27:22.0 |
HIP 17307 |
10.07 |
| 2026-10-01 00:00 |
03:43:05.03 |
+45:29:19.7 |
HIP 17307 |
8.86 |
| 2026-10-01 12:00 |
03:42:55.10 |
+45:31:16.4 |
HIP 17307 |
8.27 |
| 2026-10-02 00:00 |
03:42:44.95 |
+45:33:12.0 |
HIP 17307 |
8.44 |
| 2026-10-02 12:00 |
03:42:34.58 |
+45:35:06.6 |
HIP 17307 |
9.35 |
| 2026-10-03 00:00 |
03:42:24.00 |
+45:37:00.1 |
HIP 17307 |
10.82 |
| 2026-10-03 12:00 |
03:42:13.20 |
+45:38:52.5 |
HIP 17307 |
12.66 |
| 2026-10-04 00:00 |
03:42:02.18 |
+45:40:43.8 |
HIP 17307 |
14.74 |
| 2026-10-04 12:00 |
03:41:50.95 |
+45:42:34.0 |
HIP 17217 |
12.74 |
| 2026-10-05 00:00 |
03:41:39.51 |
+45:44:23.0 |
HIP 17217 |
10.22 |
| 2026-10-05 12:00 |
03:41:27.85 |
+45:46:10.9 |
HIP 17217 |
7.85 |
| 2026-10-06 00:00 |
03:41:15.98 |
+45:47:57.7 |
HIP 17217 |
5.79 |
| 2026-10-06 12:00 |
03:41:03.90 |
+45:49:43.2 |
HIP 17217 |
4.54 |
| 2026-10-07 00:00 |
03:40:51.61 |
+45:51:27.6 |
HIP 17217 |
4.82 |
| 2026-10-07 12:00 |
03:40:39.12 |
+45:53:10.8 |
HIP 17217 |
6.44 |
| 2026-10-08 00:00 |
03:40:26.41 |
+45:54:52.7 |
HIP 17173 |
6.97 |
| 2026-10-08 12:00 |
03:40:13.50 |
+45:56:33.5 |
HIP 17173 |
6.76 |
| 2026-10-09 00:00 |
03:40:00.39 |
+45:58:12.9 |
HIP 17173 |
7.68 |
| 2026-10-09 12:00 |
03:39:47.08 |
+45:59:51.2 |
HIP 17173 |
9.42 |
| 2026-10-10 00:00 |
03:39:33.56 |
+46:01:28.1 |
HIP 17173 |
11.64 |
| 2026-10-10 12:00 |
03:39:19.85 |
+46:03:03.8 |
HIP 17173 |
14.12 |
| 2026-10-11 00:00 |
03:39:05.94 |
+46:04:38.2 |
HIP 16955 |
15.81 |