메타데이터
| 항목 |
값 |
| Designation |
C/2025 M2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2027-11-23T09:12:57.807360Z |
| Orbit solution date (soln_date, UTC) |
2025-10-28T16:12:44Z |
| Obs used |
149 |
| NEO |
- |
| M1 |
6.800 |
| K1 |
9.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-06-22T12:55:09.638400Z |
| Discovery magnitude (MPC) |
20.66 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-07-23.0000000 |
| e |
1.00205724 |
| q (au) |
2.719675 |
| a (au) |
-1322.004067 |
| i (deg) |
173.214318 |
| Ω (om, deg) |
305.535343 |
| ω (w, deg) |
96.770779 |
| M (ma, deg) |
-0.017498 |
밝기
산란 + 전체 선형
$$
M_a = (5.774 + 5.568\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.774 |
| n |
5.568 |
| gf |
1.000 |
| gb |
-0.705 |
| k |
0.800 |
| δ90 |
9.998 |
| 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) |
| 2026-03-26 00:00 |
21:04:28.26 |
-16:50:18.3 |
HIP 104059 |
9.26 |
| 2026-03-26 12:00 |
21:04:33.61 |
-16:49:43.9 |
HIP 104059 |
8.94 |
| 2026-03-27 00:00 |
21:04:38.85 |
-16:49:09.9 |
HIP 104059 |
8.84 |
| 2026-03-27 12:00 |
21:04:44.00 |
-16:48:36.3 |
HIP 104059 |
8.95 |
| 2026-03-28 00:00 |
21:04:49.04 |
-16:48:03.1 |
HIP 104059 |
9.26 |
| 2026-03-28 12:00 |
21:04:53.97 |
-16:47:30.3 |
HIP 104059 |
9.73 |
| 2026-03-29 00:00 |
21:04:58.80 |
-16:46:58.0 |
HIP 104059 |
10.33 |
| 2026-03-29 12:00 |
21:05:03.53 |
-16:46:26.0 |
HIP 104059 |
11.04 |
| 2026-03-30 00:00 |
21:05:08.15 |
-16:45:54.4 |
HIP 104059 |
11.83 |
| 2026-03-30 12:00 |
21:05:12.65 |
-16:45:23.3 |
HIP 104059 |
12.66 |
| 2026-03-31 00:00 |
21:05:17.05 |
-16:44:52.6 |
HIP 104059 |
13.54 |
| 2026-03-31 12:00 |
21:05:21.34 |
-16:44:22.4 |
HIP 104059 |
14.44 |
| 2026-04-01 00:00 |
21:05:25.52 |
-16:43:52.5 |
HIP 104059 |
15.35 |
| 2026-04-01 12:00 |
21:05:29.59 |
-16:43:23.1 |
HIP 104059 |
16.27 |
| 2026-04-02 00:00 |
21:05:33.54 |
-16:42:54.2 |
HIP 104059 |
17.18 |
| 2026-04-02 12:00 |
21:05:37.38 |
-16:42:25.7 |
HIP 104059 |
18.09 |
| 2026-04-03 00:00 |
21:05:41.10 |
-16:41:57.7 |
HIP 104059 |
18.99 |
| 2026-04-03 12:00 |
21:05:44.70 |
-16:41:30.1 |
HIP 104059 |
19.88 |
| 2026-04-04 00:00 |
21:05:48.19 |
-16:41:03.0 |
HIP 104059 |
20.75 |
| 2026-04-04 12:00 |
21:05:51.56 |
-16:40:36.3 |
HIP 104059 |
21.60 |
| 2026-04-05 00:00 |
21:05:54.81 |
-16:40:10.1 |
HIP 104059 |
22.44 |
| 2026-04-05 12:00 |
21:05:57.93 |
-16:39:44.4 |
HIP 104059 |
23.25 |
| 2026-04-06 00:00 |
21:06:00.94 |
-16:39:19.2 |
HIP 104252 |
22.67 |
| 2026-04-06 12:00 |
21:06:03.82 |
-16:38:54.5 |
HIP 104252 |
21.87 |
| 2026-04-07 00:00 |
21:06:06.57 |
-16:38:30.3 |
HIP 104252 |
21.10 |
| 2026-04-07 12:00 |
21:06:09.20 |
-16:38:06.6 |
HIP 104252 |
20.36 |
| 2026-04-08 00:00 |
21:06:11.70 |
-16:37:43.3 |
HIP 104252 |
19.65 |
| 2026-04-08 12:00 |
21:06:14.08 |
-16:37:20.6 |
HIP 104252 |
18.97 |
| 2026-04-09 00:00 |
21:06:16.32 |
-16:36:58.4 |
HIP 104252 |
18.32 |
| 2026-04-09 12:00 |
21:06:18.43 |
-16:36:36.7 |
HIP 104252 |
17.70 |
| 2026-04-10 00:00 |
21:06:20.41 |
-16:36:15.6 |
HIP 104252 |
17.11 |
| 2026-04-10 12:00 |
21:06:22.26 |
-16:35:55.0 |
HIP 104252 |
16.55 |
| 2026-04-11 00:00 |
21:06:23.97 |
-16:35:34.9 |
HIP 104252 |
16.02 |
| 2026-04-11 12:00 |
21:06:25.55 |
-16:35:15.3 |
HIP 104252 |
15.52 |
| 2026-04-12 00:00 |
21:06:26.99 |
-16:34:56.4 |
HIP 104252 |
15.06 |
| 2026-04-12 12:00 |
21:06:28.29 |
-16:34:37.9 |
HIP 104252 |
14.62 |
| 2026-04-13 00:00 |
21:06:29.45 |
-16:34:20.0 |
HIP 104252 |
14.22 |
| 2026-04-13 12:00 |
21:06:30.47 |
-16:34:02.7 |
HIP 104252 |
13.85 |
| 2026-04-14 00:00 |
21:06:31.34 |
-16:33:46.0 |
HIP 104252 |
13.51 |
| 2026-04-14 12:00 |
21:06:32.07 |
-16:33:29.8 |
HIP 104252 |
13.20 |
| 2026-04-15 00:00 |
21:06:32.66 |
-16:33:14.2 |
HIP 104252 |
12.93 |
| 2026-04-15 12:00 |
21:06:33.10 |
-16:32:59.2 |
HIP 104252 |
12.70 |
| 2026-04-16 00:00 |
21:06:33.40 |
-16:32:44.8 |
HIP 104252 |
12.50 |