P/2023 M4 (ATLAS)
메타데이터
| 항목 |
값 |
| Designation |
P/2023 M4 (ATLAS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-04-15T03:44:22.856640Z |
| Orbit solution date (soln_date, UTC) |
2024-10-11T15:13:32Z |
| Obs used |
1091 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
11.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2023-06-21T01:28:09.321600Z |
| Discovery magnitude (MPC) |
16.82 o |
| Discovery observatory (MPC) |
M22 · ATLAS South Africa, Sutherland |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-08-07.0000000 |
| e |
0.27942129 |
| q (au) |
3.929545 |
| a (au) |
5.453318 |
| i (deg) |
7.592560 |
| Ω (om, deg) |
296.296071 |
| ω (w, deg) |
320.696493 |
| M (ma, deg) |
37.060144 |
밝기
산란 + 전체 선형
$$
M_a = (5.151 + 5.442\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.151 |
| n |
5.442 |
| gf |
0.885 |
| gb |
-0.827 |
| k |
0.997 |
| δ90 |
1.000 |
| 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) |
| 2026-02-03 00:00 |
01:12:49.47 |
+15:31:48.8 |
HIP 5483 |
39.02 |
| 2026-02-03 12:00 |
01:13:02.97 |
+15:32:35.1 |
HIP 5778 |
38.69 |
| 2026-02-04 00:00 |
01:13:16.58 |
+15:33:22.1 |
HIP 5778 |
36.76 |
| 2026-02-04 12:00 |
01:13:30.30 |
+15:34:09.9 |
HIP 5778 |
35.02 |
| 2026-02-05 00:00 |
01:13:44.12 |
+15:34:58.5 |
HIP 5778 |
33.52 |
| 2026-02-05 12:00 |
01:13:58.04 |
+15:35:47.8 |
HIP 5778 |
32.30 |
| 2026-02-06 00:00 |
01:14:12.07 |
+15:36:37.9 |
HIP 5778 |
31.40 |
| 2026-02-06 12:00 |
01:14:26.20 |
+15:37:28.7 |
HIP 5778 |
30.86 |
| 2026-02-07 00:00 |
01:14:40.43 |
+15:38:20.3 |
HIP 5778 |
30.70 |
| 2026-02-07 12:00 |
01:14:54.76 |
+15:39:12.6 |
HIP 5778 |
30.95 |
| 2026-02-08 00:00 |
01:15:09.19 |
+15:40:05.7 |
HIP 5778 |
31.60 |
| 2026-02-08 12:00 |
01:15:23.72 |
+15:40:59.5 |
HIP 5909 |
31.39 |
| 2026-02-09 00:00 |
01:15:38.36 |
+15:41:54.0 |
HIP 5932 |
29.53 |
| 2026-02-09 12:00 |
01:15:53.09 |
+15:42:49.3 |
HIP 5932 |
27.73 |
| 2026-02-10 00:00 |
01:16:07.91 |
+15:43:45.2 |
HIP 5932 |
26.32 |
| 2026-02-10 12:00 |
01:16:22.84 |
+15:44:41.9 |
HIP 5932 |
25.35 |
| 2026-02-11 00:00 |
01:16:37.86 |
+15:45:39.3 |
HIP 5932 |
24.90 |
| 2026-02-11 12:00 |
01:16:52.97 |
+15:46:37.5 |
HIP 5932 |
25.00 |
| 2026-02-12 00:00 |
01:17:08.19 |
+15:47:36.3 |
HIP 5932 |
25.65 |
| 2026-02-12 12:00 |
01:17:23.49 |
+15:48:35.8 |
HIP 5932 |
26.84 |
| 2026-02-13 00:00 |
01:17:38.89 |
+15:49:36.0 |
HIP 6143 |
26.59 |
| 2026-02-13 12:00 |
01:17:54.38 |
+15:50:36.9 |
HIP 6143 |
25.10 |
| 2026-02-14 00:00 |
01:18:09.96 |
+15:51:38.5 |
HIP 6143 |
24.14 |
| 2026-02-14 12:00 |
01:18:25.64 |
+15:52:40.8 |
HIP 6143 |
23.79 |
| 2026-02-15 00:00 |
01:18:41.40 |
+15:53:43.8 |
HIP 6143 |
24.08 |
| 2026-02-15 12:00 |
01:18:57.26 |
+15:54:47.4 |
HIP 6143 |
25.02 |
| 2026-02-16 00:00 |
01:19:13.20 |
+15:55:51.7 |
HIP 6289 |
25.41 |
| 2026-02-16 12:00 |
01:19:29.23 |
+15:56:56.6 |
HIP 6289 |
23.00 |
| 2026-02-17 00:00 |
01:19:45.35 |
+15:58:02.2 |
HIP 6289 |
21.08 |
| 2026-02-17 12:00 |
01:20:01.56 |
+15:59:08.5 |
HIP 6289 |
19.81 |
| 2026-02-18 00:00 |
01:20:17.85 |
+16:00:15.3 |
HIP 6289 |
19.32 |
| 2026-02-18 12:00 |
01:20:34.23 |
+16:01:22.9 |
HIP 6289 |
19.69 |
| 2026-02-19 00:00 |
01:20:50.69 |
+16:02:31.0 |
HIP 6289 |
20.88 |
| 2026-02-19 12:00 |
01:21:07.23 |
+16:03:39.8 |
HIP 6384 |
21.03 |
| 2026-02-20 00:00 |
01:21:23.86 |
+16:04:49.2 |
HIP 6373 |
19.55 |
| 2026-02-20 12:00 |
01:21:40.57 |
+16:05:59.3 |
HIP 6373 |
17.31 |
| 2026-02-21 00:00 |
01:21:57.36 |
+16:07:09.9 |
HIP 6373 |
15.86 |
| 2026-02-21 12:00 |
01:22:14.23 |
+16:08:21.2 |
HIP 6373 |
15.45 |
| 2026-02-22 00:00 |
01:22:31.18 |
+16:09:33.0 |
HIP 6464 |
12.47 |
| 2026-02-22 12:00 |
01:22:48.20 |
+16:10:45.4 |
HIP 6464 |
8.88 |
| 2026-02-23 00:00 |
01:23:05.31 |
+16:11:58.5 |
HIP 6464 |
6.19 |
| 2026-02-23 12:00 |
01:23:22.49 |
+16:13:12.1 |
HIP 6464 |
5.88 |
| 2026-02-24 00:00 |
01:23:39.75 |
+16:14:26.3 |
HIP 6464 |
8.24 |