메타데이터
| 항목 |
값 |
| Designation |
C/2024 G4 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2026-03-21T14:33:46.284480Z |
| Orbit solution date (soln_date, UTC) |
2026-09-21T07:12:11Z |
| Obs used |
778 |
| NEO |
- |
| M1 |
10.400 |
| K1 |
7.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-04-10T12:57:43.084800Z |
| Discovery magnitude (MPC) |
21.12 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-07-13.0000000 |
| e |
0.99846101 |
| q (au) |
4.900480 |
| a (au) |
3184.213413 |
| i (deg) |
33.026523 |
| Ω (om, deg) |
152.980925 |
| ω (w, deg) |
131.419903 |
| M (ma, deg) |
359.998620 |
밝기
산란 + 전체 선형
$$
M_a = (8.678 + 3.153\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.678 |
| n |
3.153 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-09-20 00:00 |
20:00:37.80 |
-04:34:15.2 |
HIP 98513 |
15.79 |
| 2026-09-20 12:00 |
20:00:40.76 |
-04:37:33.3 |
HIP 98513 |
18.97 |
| 2026-09-21 00:00 |
20:00:43.90 |
-04:40:50.7 |
HIP 98513 |
22.19 |
| 2026-09-21 12:00 |
20:00:47.22 |
-04:44:07.3 |
HIP 98642 |
21.38 |
| 2026-09-22 00:00 |
20:00:50.72 |
-04:47:23.2 |
HIP 98642 |
19.95 |
| 2026-09-22 12:00 |
20:00:54.39 |
-04:50:38.4 |
HIP 98642 |
18.98 |
| 2026-09-23 00:00 |
20:00:58.25 |
-04:53:52.8 |
HIP 98642 |
18.54 |
| 2026-09-23 12:00 |
20:01:02.28 |
-04:57:06.5 |
HIP 98643 |
17.16 |
| 2026-09-24 00:00 |
20:01:06.50 |
-05:00:19.3 |
HIP 98643 |
15.98 |
| 2026-09-24 12:00 |
20:01:10.89 |
-05:03:31.4 |
HIP 98643 |
15.42 |
| 2026-09-25 00:00 |
20:01:15.46 |
-05:06:42.7 |
HIP 98643 |
15.55 |
| 2026-09-25 12:00 |
20:01:20.21 |
-05:09:53.1 |
HIP 98643 |
16.35 |
| 2026-09-26 00:00 |
20:01:25.14 |
-05:13:02.8 |
HIP 98643 |
17.73 |
| 2026-09-26 12:00 |
20:01:30.24 |
-05:16:11.6 |
HIP 98643 |
19.58 |
| 2026-09-27 00:00 |
20:01:35.53 |
-05:19:19.6 |
HIP 98643 |
21.76 |
| 2026-09-27 12:00 |
20:01:40.99 |
-05:22:26.8 |
HIP 98643 |
24.21 |
| 2026-09-28 00:00 |
20:01:46.63 |
-05:25:33.1 |
HIP 98643 |
26.83 |
| 2026-09-28 12:00 |
20:01:52.44 |
-05:28:38.5 |
HIP 98736 |
27.57 |
| 2026-09-29 00:00 |
20:01:58.44 |
-05:31:43.1 |
HIP 98736 |
24.45 |
| 2026-09-29 12:00 |
20:02:04.61 |
-05:34:46.8 |
HIP 98736 |
21.39 |
| 2026-09-30 00:00 |
20:02:10.96 |
-05:37:49.6 |
HIP 98736 |
18.42 |
| 2026-09-30 12:00 |
20:02:17.48 |
-05:40:51.5 |
HIP 98736 |
15.62 |
| 2026-10-01 00:00 |
20:02:24.18 |
-05:43:52.5 |
HIP 98736 |
13.08 |
| 2026-10-01 12:00 |
20:02:31.06 |
-05:46:52.6 |
HIP 98736 |
11.00 |
| 2026-10-02 00:00 |
20:02:38.11 |
-05:49:51.8 |
HIP 98736 |
9.69 |
| 2026-10-02 12:00 |
20:02:45.34 |
-05:52:50.1 |
HIP 98736 |
9.49 |
| 2026-10-03 00:00 |
20:02:52.74 |
-05:55:47.5 |
HIP 98736 |
10.46 |
| 2026-10-03 12:00 |
20:03:00.32 |
-05:58:43.9 |
HIP 98736 |
12.35 |
| 2026-10-04 00:00 |
20:03:08.08 |
-06:01:39.3 |
HIP 98736 |
14.81 |
| 2026-10-04 12:00 |
20:03:16.01 |
-06:04:33.8 |
HIP 98723 |
12.98 |
| 2026-10-05 00:00 |
20:03:24.11 |
-06:07:27.4 |
HIP 98723 |
10.87 |
| 2026-10-05 12:00 |
20:03:32.40 |
-06:10:20.0 |
HIP 98723 |
9.68 |
| 2026-10-06 00:00 |
20:03:40.85 |
-06:13:11.6 |
HIP 98723 |
9.74 |
| 2026-10-06 12:00 |
20:03:49.48 |
-06:16:02.2 |
HIP 98723 |
11.07 |
| 2026-10-07 00:00 |
20:03:58.28 |
-06:18:51.8 |
HIP 98723 |
13.28 |
| 2026-10-07 12:00 |
20:04:07.26 |
-06:21:40.4 |
HIP 98723 |
16.03 |
| 2026-10-08 00:00 |
20:04:16.41 |
-06:24:28.1 |
HIP 98944 |
19.08 |
| 2026-10-08 12:00 |
20:04:25.73 |
-06:27:14.7 |
HIP 98944 |
15.64 |
| 2026-10-09 00:00 |
20:04:35.23 |
-06:30:00.3 |
HIP 98944 |
12.27 |
| 2026-10-09 12:00 |
20:04:44.89 |
-06:32:44.8 |
HIP 98944 |
9.07 |
| 2026-10-10 00:00 |
20:04:54.73 |
-06:35:28.4 |
HIP 98944 |
6.33 |
| 2026-10-10 12:00 |
20:05:04.74 |
-06:38:10.9 |
HIP 98944 |
4.92 |
| 2026-10-11 00:00 |
20:05:14.93 |
-06:40:52.3 |
HIP 98944 |
5.92 |