메타데이터
| 항목 |
값 |
| Designation |
C/2024 W1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-03-19T01:48:39.398400Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:13:00Z |
| Obs used |
27 |
| NEO |
- |
| M1 |
5.100 |
| K1 |
28.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-11-22T14:32:42.374400Z |
| Discovery magnitude (MPC) |
20.74 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2024-12-13.0000000 |
| e |
0.94290668 |
| q (au) |
2.560778 |
| a (au) |
44.852495 |
| i (deg) |
83.200718 |
| Ω (om, deg) |
310.728342 |
| ω (w, deg) |
256.729174 |
| M (ma, deg) |
359.684763 |
밝기
산란 + 전체 선형
$$
M_a = (10.270 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.270 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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 |
20:22:05.25 |
-25:24:46.8 |
HIP 100611 |
29.39 |
| 2026-09-20 12:00 |
20:21:51.33 |
-25:22:42.8 |
HIP 100233 |
29.89 |
| 2026-09-21 00:00 |
20:21:37.65 |
-25:20:38.5 |
HIP 100233 |
26.34 |
| 2026-09-21 12:00 |
20:21:24.21 |
-25:18:33.8 |
HIP 100233 |
22.89 |
| 2026-09-22 00:00 |
20:21:11.00 |
-25:16:28.9 |
HIP 100233 |
19.58 |
| 2026-09-22 12:00 |
20:20:58.02 |
-25:14:23.8 |
HIP 100233 |
16.47 |
| 2026-09-23 00:00 |
20:20:45.29 |
-25:12:18.3 |
HIP 100233 |
13.65 |
| 2026-09-23 12:00 |
20:20:32.78 |
-25:10:12.7 |
HIP 100233 |
11.30 |
| 2026-09-24 00:00 |
20:20:20.51 |
-25:08:06.7 |
HIP 100233 |
9.73 |
| 2026-09-24 12:00 |
20:20:08.48 |
-25:06:00.5 |
HIP 100233 |
9.31 |
| 2026-09-25 00:00 |
20:19:56.68 |
-25:03:54.1 |
HIP 100233 |
10.13 |
| 2026-09-25 12:00 |
20:19:45.11 |
-25:01:47.5 |
HIP 100233 |
11.90 |
| 2026-09-26 00:00 |
20:19:33.77 |
-24:59:40.6 |
HIP 100233 |
14.26 |
| 2026-09-26 12:00 |
20:19:22.66 |
-24:57:33.5 |
HIP 100233 |
16.93 |
| 2026-09-27 00:00 |
20:19:11.79 |
-24:55:26.2 |
HIP 100233 |
19.77 |
| 2026-09-27 12:00 |
20:19:01.15 |
-24:53:18.7 |
HIP 100233 |
22.70 |
| 2026-09-28 00:00 |
20:18:50.73 |
-24:51:11.0 |
HIP 100233 |
25.68 |
| 2026-09-28 12:00 |
20:18:40.55 |
-24:49:03.1 |
HIP 100322 |
28.30 |
| 2026-09-29 00:00 |
20:18:30.60 |
-24:46:55.1 |
HIP 100322 |
30.55 |
| 2026-09-29 12:00 |
20:18:20.87 |
-24:44:46.8 |
HIP 100068 |
28.83 |
| 2026-09-30 00:00 |
20:18:11.37 |
-24:42:38.4 |
HIP 100068 |
26.53 |
| 2026-09-30 12:00 |
20:18:02.10 |
-24:40:29.8 |
HIP 100068 |
24.39 |
| 2026-10-01 00:00 |
20:17:53.06 |
-24:38:21.0 |
HIP 100068 |
22.44 |
| 2026-10-01 12:00 |
20:17:44.24 |
-24:36:12.1 |
HIP 100068 |
20.72 |
| 2026-10-02 00:00 |
20:17:35.65 |
-24:34:03.0 |
HIP 100068 |
19.27 |
| 2026-10-02 12:00 |
20:17:27.28 |
-24:31:53.8 |
HIP 100068 |
18.15 |
| 2026-10-03 00:00 |
20:17:19.14 |
-24:29:44.4 |
HIP 100068 |
17.41 |
| 2026-10-03 12:00 |
20:17:11.22 |
-24:27:34.9 |
HIP 100068 |
17.07 |
| 2026-10-04 00:00 |
20:17:03.52 |
-24:25:25.2 |
HIP 100068 |
17.15 |
| 2026-10-04 12:00 |
20:16:56.05 |
-24:23:15.4 |
HIP 100068 |
17.62 |
| 2026-10-05 00:00 |
20:16:48.79 |
-24:21:05.4 |
HIP 100068 |
18.45 |
| 2026-10-05 12:00 |
20:16:41.76 |
-24:18:55.4 |
HIP 100068 |
19.57 |
| 2026-10-06 00:00 |
20:16:34.95 |
-24:16:45.2 |
HIP 100068 |
20.94 |
| 2026-10-06 12:00 |
20:16:28.36 |
-24:14:34.9 |
HIP 99817 |
21.49 |
| 2026-10-07 00:00 |
20:16:21.99 |
-24:12:24.4 |
HIP 99817 |
21.70 |
| 2026-10-07 12:00 |
20:16:15.83 |
-24:10:13.9 |
HIP 99901 |
20.17 |
| 2026-10-08 00:00 |
20:16:09.90 |
-24:08:03.2 |
HIP 99901 |
17.97 |
| 2026-10-08 12:00 |
20:16:04.18 |
-24:05:52.5 |
HIP 99901 |
15.88 |
| 2026-10-09 00:00 |
20:15:58.67 |
-24:03:41.6 |
HIP 99901 |
13.92 |
| 2026-10-09 12:00 |
20:15:53.39 |
-24:01:30.6 |
HIP 99901 |
12.14 |
| 2026-10-10 00:00 |
20:15:48.31 |
-23:59:19.6 |
HIP 99901 |
10.64 |
| 2026-10-10 12:00 |
20:15:43.45 |
-23:57:08.4 |
HIP 99901 |
9.52 |
| 2026-10-11 00:00 |
20:15:38.80 |
-23:54:57.1 |
HIP 99901 |
8.90 |