메타데이터
| 항목 |
값 |
| Designation |
C/2024 X4 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-09-01T21:49:17.152320Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:10Z |
| Obs used |
57 |
| NEO |
- |
| M1 |
16.000 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-12-08T05:19:38.726400Z |
| Discovery magnitude (MPC) |
21.38 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-05-05.0000000 |
| e |
0.64171387 |
| q (au) |
3.604575 |
| a (au) |
10.060605 |
| i (deg) |
34.669175 |
| Ω (om, deg) |
258.942704 |
| ω (w, deg) |
153.294339 |
| M (ma, deg) |
356.296430 |
밝기
산란 + 전체 선형
$$
M_a = (14.731 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.731 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.552 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
06:00:23.66 |
+14:36:51.8 |
HIP 28473 |
20.99 |
| 2026-06-01 12:00 |
06:00:58.50 |
+14:35:10.4 |
HIP 28473 |
22.64 |
| 2026-06-02 00:00 |
06:01:33.35 |
+14:33:28.4 |
HIP 28663 |
25.80 |
| 2026-06-02 12:00 |
06:02:08.19 |
+14:31:45.8 |
HIP 28663 |
17.64 |
| 2026-06-03 00:00 |
06:02:43.04 |
+14:30:02.7 |
HIP 28663 |
10.22 |
| 2026-06-03 12:00 |
06:03:17.89 |
+14:28:18.9 |
HIP 28663 |
6.78 |
| 2026-06-04 00:00 |
06:03:52.73 |
+14:26:34.5 |
HIP 28663 |
11.65 |
| 2026-06-04 12:00 |
06:04:27.58 |
+14:24:49.6 |
HIP 28813 |
7.56 |
| 2026-06-05 00:00 |
06:05:02.42 |
+14:23:04.1 |
HIP 28813 |
1.06 |
| 2026-06-05 12:00 |
06:05:37.27 |
+14:21:17.9 |
HIP 28813 |
9.68 |
| 2026-06-06 00:00 |
06:06:12.10 |
+14:19:31.2 |
HIP 29000 |
15.64 |
| 2026-06-06 12:00 |
06:06:46.94 |
+14:17:43.8 |
HIP 29000 |
10.65 |
| 2026-06-07 00:00 |
06:07:21.77 |
+14:15:55.9 |
HIP 29000 |
11.45 |
| 2026-06-07 12:00 |
06:07:56.60 |
+14:14:07.3 |
HIP 29106 |
16.67 |
| 2026-06-08 00:00 |
06:08:31.43 |
+14:12:18.1 |
HIP 29126 |
14.04 |
| 2026-06-08 12:00 |
06:09:06.25 |
+14:10:28.3 |
HIP 29127 |
14.97 |
| 2026-06-09 00:00 |
06:09:41.06 |
+14:08:37.9 |
HIP 29127 |
19.82 |
| 2026-06-09 12:00 |
06:10:15.87 |
+14:06:46.9 |
HIP 29426 |
25.04 |
| 2026-06-10 00:00 |
06:10:50.66 |
+14:04:55.2 |
HIP 29426 |
17.66 |
| 2026-06-10 12:00 |
06:11:25.46 |
+14:03:02.9 |
HIP 29426 |
12.09 |
| 2026-06-11 00:00 |
06:12:00.24 |
+14:01:10.0 |
HIP 29426 |
11.40 |
| 2026-06-11 12:00 |
06:12:35.01 |
+13:59:16.4 |
HIP 29544 |
13.90 |
| 2026-06-12 00:00 |
06:13:09.78 |
+13:57:22.2 |
HIP 29544 |
6.48 |
| 2026-06-12 12:00 |
06:13:44.53 |
+13:55:27.4 |
HIP 29544 |
6.35 |
| 2026-06-13 00:00 |
06:14:19.28 |
+13:53:31.9 |
HIP 29678 |
12.19 |
| 2026-06-13 12:00 |
06:14:54.01 |
+13:51:35.8 |
HIP 29678 |
3.55 |
| 2026-06-14 00:00 |
06:15:28.73 |
+13:49:39.0 |
HIP 29678 |
5.12 |
| 2026-06-14 12:00 |
06:16:03.43 |
+13:47:41.6 |
HIP 29678 |
13.77 |
| 2026-06-15 00:00 |
06:16:38.12 |
+13:45:43.5 |
HIP 29881 |
22.27 |
| 2026-06-15 12:00 |
06:17:12.80 |
+13:43:44.8 |
HIP 29881 |
20.39 |
| 2026-06-16 00:00 |
06:17:47.46 |
+13:41:45.4 |
HIP 29881 |
22.03 |
| 2026-06-16 12:00 |
06:18:22.11 |
+13:39:45.3 |
HIP 30051 |
20.61 |
| 2026-06-17 00:00 |
06:18:56.74 |
+13:37:44.6 |
HIP 30055 |
13.36 |
| 2026-06-17 12:00 |
06:19:31.35 |
+13:35:43.3 |
HIP 30055 |
8.84 |
| 2026-06-18 00:00 |
06:20:05.94 |
+13:33:41.2 |
HIP 30055 |
11.28 |
| 2026-06-18 12:00 |
06:20:40.51 |
+13:31:38.5 |
HIP 30055 |
18.05 |
| 2026-06-19 00:00 |
06:21:15.06 |
+13:29:35.2 |
HIP 30055 |
25.96 |
| 2026-06-19 12:00 |
06:21:49.60 |
+13:27:31.2 |
HIP 30055 |
34.22 |
| 2026-06-20 00:00 |
06:22:24.11 |
+13:25:26.5 |
HIP 30245 |
35.04 |
| 2026-06-20 12:00 |
06:22:58.59 |
+13:23:21.1 |
HIP 30483 |
31.28 |
| 2026-06-21 00:00 |
06:23:33.06 |
+13:21:15.1 |
HIP 30483 |
24.36 |
| 2026-06-21 12:00 |
06:24:07.50 |
+13:19:08.4 |
HIP 30483 |
18.91 |
| 2026-06-22 00:00 |
06:24:41.92 |
+13:17:01.1 |
HIP 30483 |
16.46 |