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) |
| 2026-05-12 00:00 |
02:16:16.01 |
+20:30:25.8 |
HIP 10494 |
20.05 |
| 2026-05-12 12:00 |
02:16:37.27 |
+20:32:14.3 |
HIP 10494 |
24.91 |
| 2026-05-13 00:00 |
02:16:58.50 |
+20:34:02.8 |
HIP 10494 |
29.91 |
| 2026-05-13 12:00 |
02:17:19.71 |
+20:35:51.1 |
HIP 10494 |
34.99 |
| 2026-05-14 00:00 |
02:17:40.90 |
+20:37:39.4 |
HIP 10494 |
40.12 |
| 2026-05-14 12:00 |
02:18:02.06 |
+20:39:27.7 |
HIP 10494 |
45.28 |
| 2026-05-15 00:00 |
02:18:23.20 |
+20:41:15.8 |
HIP 10732 |
47.34 |
| 2026-05-15 12:00 |
02:18:44.32 |
+20:43:03.9 |
HIP 11032 |
48.94 |
| 2026-05-16 00:00 |
02:19:05.41 |
+20:44:51.9 |
HIP 11032 |
44.82 |
| 2026-05-16 12:00 |
02:19:26.48 |
+20:46:39.8 |
HIP 11032 |
40.96 |
| 2026-05-17 00:00 |
02:19:47.52 |
+20:48:27.6 |
HIP 11032 |
37.45 |
| 2026-05-17 12:00 |
02:20:08.54 |
+20:50:15.3 |
HIP 11032 |
34.39 |
| 2026-05-18 00:00 |
02:20:29.53 |
+20:52:02.9 |
HIP 11032 |
31.91 |
| 2026-05-18 12:00 |
02:20:50.48 |
+20:53:50.4 |
HIP 11032 |
30.14 |
| 2026-05-19 00:00 |
02:21:11.41 |
+20:55:37.8 |
HIP 11032 |
29.21 |
| 2026-05-19 12:00 |
02:21:32.31 |
+20:57:25.1 |
HIP 11076 |
25.74 |
| 2026-05-20 00:00 |
02:21:53.18 |
+20:59:12.2 |
HIP 11076 |
21.75 |
| 2026-05-20 12:00 |
02:22:14.02 |
+21:00:59.3 |
HIP 11076 |
18.37 |
| 2026-05-21 00:00 |
02:22:34.83 |
+21:02:46.2 |
HIP 11076 |
15.98 |
| 2026-05-21 12:00 |
02:22:55.60 |
+21:04:33.0 |
HIP 11076 |
15.06 |
| 2026-05-22 00:00 |
02:23:16.35 |
+21:06:19.7 |
HIP 11076 |
15.85 |
| 2026-05-22 12:00 |
02:23:37.06 |
+21:08:06.3 |
HIP 11076 |
18.13 |
| 2026-05-23 00:00 |
02:23:57.73 |
+21:09:52.7 |
HIP 11076 |
21.41 |
| 2026-05-23 12:00 |
02:24:18.37 |
+21:11:39.0 |
HIP 11076 |
25.31 |
| 2026-05-24 00:00 |
02:24:38.97 |
+21:13:25.1 |
HIP 11076 |
29.58 |
| 2026-05-24 12:00 |
02:24:59.54 |
+21:15:11.2 |
HIP 11315 |
31.84 |
| 2026-05-25 00:00 |
02:25:20.07 |
+21:16:57.1 |
HIP 11315 |
29.04 |
| 2026-05-25 12:00 |
02:25:40.57 |
+21:18:42.8 |
HIP 11315 |
26.92 |
| 2026-05-26 00:00 |
02:26:01.03 |
+21:20:28.4 |
HIP 11315 |
25.65 |
| 2026-05-26 12:00 |
02:26:21.45 |
+21:22:13.9 |
HIP 11315 |
25.34 |
| 2026-05-27 00:00 |
02:26:41.83 |
+21:23:59.2 |
HIP 11315 |
26.03 |
| 2026-05-27 12:00 |
02:27:02.17 |
+21:25:44.3 |
HIP 11315 |
27.64 |
| 2026-05-28 00:00 |
02:27:22.47 |
+21:27:29.3 |
HIP 11559 |
26.89 |
| 2026-05-28 12:00 |
02:27:42.73 |
+21:29:14.2 |
HIP 11584 |
22.94 |
| 2026-05-29 00:00 |
02:28:02.95 |
+21:30:58.9 |
HIP 11584 |
17.94 |
| 2026-05-29 12:00 |
02:28:23.13 |
+21:32:43.4 |
HIP 11584 |
12.96 |
| 2026-05-30 00:00 |
02:28:43.27 |
+21:34:27.8 |
HIP 11584 |
8.03 |
| 2026-05-30 12:00 |
02:29:03.36 |
+21:36:12.0 |
HIP 11584 |
3.32 |
| 2026-05-31 00:00 |
02:29:23.41 |
+21:37:56.0 |
HIP 11584 |
2.69 |
| 2026-05-31 12:00 |
02:29:43.42 |
+21:39:39.9 |
HIP 11584 |
7.26 |
| 2026-06-01 00:00 |
02:30:03.39 |
+21:41:23.6 |
HIP 11584 |
12.13 |
| 2026-06-01 12:00 |
02:30:23.30 |
+21:43:07.1 |
HIP 11584 |
17.04 |
| 2026-06-02 00:00 |
02:30:43.18 |
+21:44:50.5 |
HIP 11584 |
21.94 |