메타데이터
| 항목 |
값 |
| Designation |
C/2024 G4 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2026-03-21T14:59:13.585920Z |
| Orbit solution date (soln_date, UTC) |
2026-07-28T14:12:17Z |
| Obs used |
701 |
| NEO |
- |
| M1 |
10.600 |
| K1 |
6.750 |
| 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) |
2025-05-30.0000000 |
| e |
0.99845611 |
| q (au) |
4.900420 |
| a (au) |
3174.077896 |
| i (deg) |
33.026385 |
| Ω (om, deg) |
152.982688 |
| ω (w, deg) |
131.420849 |
| M (ma, deg) |
359.998371 |
밝기
산란 + 전체 선형
$$
M_a = (6.946 + 4.142\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.946 |
| n |
4.142 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
20:09:40.06 |
+01:28:35.1 |
HIP 99266 |
14.23 |
| 2026-07-29 12:00 |
20:09:29.74 |
+01:25:37.3 |
HIP 99266 |
15.14 |
| 2026-07-30 00:00 |
20:09:19.46 |
+01:22:38.3 |
HIP 99266 |
16.97 |
| 2026-07-30 12:00 |
20:09:09.20 |
+01:19:38.1 |
HIP 99266 |
19.45 |
| 2026-07-31 00:00 |
20:08:58.97 |
+01:16:36.8 |
HIP 99266 |
22.37 |
| 2026-07-31 12:00 |
20:08:48.78 |
+01:13:34.4 |
HIP 99266 |
25.60 |
| 2026-08-01 00:00 |
20:08:38.63 |
+01:10:30.9 |
HIP 99266 |
29.02 |
| 2026-08-01 12:00 |
20:08:28.52 |
+01:07:26.2 |
HIP 99087 |
27.09 |
| 2026-08-02 00:00 |
20:08:18.44 |
+01:04:20.5 |
HIP 99087 |
23.34 |
| 2026-08-02 12:00 |
20:08:08.42 |
+01:01:13.7 |
HIP 99087 |
19.69 |
| 2026-08-03 00:00 |
20:07:58.44 |
+00:58:05.9 |
HIP 99087 |
16.21 |
| 2026-08-03 12:00 |
20:07:48.51 |
+00:54:57.1 |
HIP 99087 |
13.04 |
| 2026-08-04 00:00 |
20:07:38.63 |
+00:51:47.2 |
HIP 99087 |
10.47 |
| 2026-08-04 12:00 |
20:07:28.80 |
+00:48:36.3 |
HIP 99087 |
9.05 |
| 2026-08-05 00:00 |
20:07:19.04 |
+00:45:24.5 |
HIP 99087 |
9.32 |
| 2026-08-05 12:00 |
20:07:09.32 |
+00:42:11.7 |
HIP 99087 |
11.17 |
| 2026-08-06 00:00 |
20:06:59.67 |
+00:38:57.9 |
HIP 99087 |
13.98 |
| 2026-08-06 12:00 |
20:06:50.09 |
+00:35:43.2 |
HIP 99087 |
17.30 |
| 2026-08-07 00:00 |
20:06:40.56 |
+00:32:27.7 |
HIP 98945 |
20.72 |
| 2026-08-07 12:00 |
20:06:31.11 |
+00:29:11.2 |
HIP 98945 |
17.80 |
| 2026-08-08 00:00 |
20:06:21.72 |
+00:25:53.8 |
HIP 98945 |
15.41 |
| 2026-08-08 12:00 |
20:06:12.41 |
+00:22:35.7 |
HIP 98945 |
13.83 |
| 2026-08-09 00:00 |
20:06:03.18 |
+00:19:16.7 |
HIP 98945 |
13.36 |
| 2026-08-09 12:00 |
20:05:54.01 |
+00:15:56.8 |
HIP 98945 |
14.11 |
| 2026-08-10 00:00 |
20:05:44.93 |
+00:12:36.2 |
HIP 98945 |
15.90 |
| 2026-08-10 12:00 |
20:05:35.93 |
+00:09:14.8 |
HIP 98945 |
18.44 |
| 2026-08-11 00:00 |
20:05:27.02 |
+00:05:52.7 |
HIP 98945 |
21.46 |
| 2026-08-11 12:00 |
20:05:18.19 |
+00:02:29.8 |
HIP 98945 |
24.78 |
| 2026-08-12 00:00 |
20:05:09.45 |
-00:00:53.7 |
HIP 99078 |
26.22 |
| 2026-08-12 12:00 |
20:05:00.80 |
-00:04:18.0 |
HIP 98750 |
25.41 |
| 2026-08-13 00:00 |
20:04:52.25 |
-00:07:42.9 |
HIP 98750 |
25.04 |
| 2026-08-13 12:00 |
20:04:43.79 |
-00:11:08.5 |
HIP 98750 |
25.34 |
| 2026-08-14 00:00 |
20:04:35.43 |
-00:14:34.6 |
HIP 98750 |
26.29 |
| 2026-08-14 12:00 |
20:04:27.17 |
-00:18:01.4 |
HIP 98844 |
24.54 |
| 2026-08-15 00:00 |
20:04:19.01 |
-00:21:28.8 |
HIP 98844 |
21.09 |
| 2026-08-15 12:00 |
20:04:10.95 |
-00:24:56.7 |
HIP 98844 |
17.86 |
| 2026-08-16 00:00 |
20:04:03.00 |
-00:28:25.1 |
HIP 98844 |
14.99 |
| 2026-08-16 12:00 |
20:03:55.16 |
-00:31:54.1 |
HIP 98844 |
12.73 |
| 2026-08-17 00:00 |
20:03:47.43 |
-00:35:23.5 |
HIP 98844 |
11.44 |
| 2026-08-17 12:00 |
20:03:39.81 |
-00:38:53.4 |
HIP 98844 |
11.43 |
| 2026-08-18 00:00 |
20:03:32.31 |
-00:42:23.8 |
HIP 98844 |
12.71 |
| 2026-08-18 12:00 |
20:03:24.92 |
-00:45:54.6 |
HIP 98694 |
13.81 |
| 2026-08-19 00:00 |
20:03:17.65 |
-00:49:25.8 |
HIP 98665 |
13.14 |