메타데이터
| 항목 |
값 |
| Designation |
C/2025 M1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2029-08-03T14:21:41.872320Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:16Z |
| Obs used |
62 |
| NEO |
- |
| M1 |
6.700 |
| K1 |
7.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-06-21T08:14:47.731200Z |
| Discovery magnitude (MPC) |
20.92 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2024-11-18.0000000 |
| e |
0.99845584 |
| q (au) |
10.825979 |
| a (au) |
7010.915716 |
| i (deg) |
64.906803 |
| Ω (om, deg) |
66.958312 |
| ω (w, deg) |
230.454419 |
| M (ma, deg) |
359.997113 |
밝기
산란 + 전체 선형
$$
M_a = (6.209 + 4.947\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.209 |
| n |
4.947 |
| gf |
1.000 |
| gb |
-0.873 |
| k |
0.800 |
| δ90 |
9.982 |
| 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 |
16:48:11.67 |
-29:04:05.6 |
HIP 82228 |
7.49 |
| 2026-03-26 12:00 |
16:48:09.16 |
-29:05:06.7 |
HIP 82228 |
8.20 |
| 2026-03-27 00:00 |
16:48:06.56 |
-29:06:07.7 |
HIP 82228 |
9.00 |
| 2026-03-27 12:00 |
16:48:03.86 |
-29:07:08.7 |
HIP 82228 |
9.87 |
| 2026-03-28 00:00 |
16:48:01.08 |
-29:08:09.5 |
HIP 82228 |
10.79 |
| 2026-03-28 12:00 |
16:47:58.20 |
-29:09:10.1 |
HIP 82228 |
11.75 |
| 2026-03-29 00:00 |
16:47:55.22 |
-29:10:10.7 |
HIP 82228 |
12.75 |
| 2026-03-29 12:00 |
16:47:52.16 |
-29:11:11.2 |
HIP 82228 |
13.79 |
| 2026-03-30 00:00 |
16:47:49.00 |
-29:12:11.5 |
HIP 82228 |
14.85 |
| 2026-03-30 12:00 |
16:47:45.75 |
-29:13:11.7 |
HIP 82228 |
15.93 |
| 2026-03-31 00:00 |
16:47:42.41 |
-29:14:11.8 |
HIP 82228 |
17.03 |
| 2026-03-31 12:00 |
16:47:38.98 |
-29:15:11.8 |
HIP 82228 |
18.16 |
| 2026-04-01 00:00 |
16:47:35.46 |
-29:16:11.6 |
HIP 82228 |
19.30 |
| 2026-04-01 12:00 |
16:47:31.84 |
-29:17:11.4 |
HIP 82161 |
19.36 |
| 2026-04-02 00:00 |
16:47:28.14 |
-29:18:11.0 |
HIP 82161 |
18.17 |
| 2026-04-02 12:00 |
16:47:24.34 |
-29:19:10.4 |
HIP 82161 |
16.99 |
| 2026-04-03 00:00 |
16:47:20.46 |
-29:20:09.8 |
HIP 82161 |
15.83 |
| 2026-04-03 12:00 |
16:47:16.48 |
-29:21:09.0 |
HIP 82161 |
14.70 |
| 2026-04-04 00:00 |
16:47:12.41 |
-29:22:08.0 |
HIP 82161 |
13.59 |
| 2026-04-04 12:00 |
16:47:08.25 |
-29:23:07.0 |
HIP 82161 |
12.53 |
| 2026-04-05 00:00 |
16:47:04.01 |
-29:24:05.8 |
HIP 82161 |
11.52 |
| 2026-04-05 12:00 |
16:46:59.67 |
-29:25:04.4 |
HIP 82161 |
10.60 |
| 2026-04-06 00:00 |
16:46:55.24 |
-29:26:02.9 |
HIP 82161 |
9.78 |
| 2026-04-06 12:00 |
16:46:50.73 |
-29:27:01.3 |
HIP 82161 |
9.11 |
| 2026-04-07 00:00 |
16:46:46.13 |
-29:27:59.5 |
HIP 82161 |
8.62 |
| 2026-04-07 12:00 |
16:46:41.43 |
-29:28:57.6 |
HIP 82161 |
8.35 |
| 2026-04-08 00:00 |
16:46:36.65 |
-29:29:55.5 |
HIP 82161 |
8.33 |
| 2026-04-08 12:00 |
16:46:31.78 |
-29:30:53.3 |
HIP 82161 |
8.56 |
| 2026-04-09 00:00 |
16:46:26.83 |
-29:31:51.0 |
HIP 82161 |
9.04 |
| 2026-04-09 12:00 |
16:46:21.78 |
-29:32:48.4 |
HIP 82161 |
9.73 |
| 2026-04-10 00:00 |
16:46:16.65 |
-29:33:45.7 |
HIP 82161 |
10.59 |
| 2026-04-10 12:00 |
16:46:11.44 |
-29:34:42.9 |
HIP 82161 |
11.60 |
| 2026-04-11 00:00 |
16:46:06.13 |
-29:35:39.9 |
HIP 82161 |
12.71 |
| 2026-04-11 12:00 |
16:46:00.74 |
-29:36:36.7 |
HIP 82161 |
13.92 |
| 2026-04-12 00:00 |
16:45:55.26 |
-29:37:33.4 |
HIP 82161 |
15.20 |
| 2026-04-12 12:00 |
16:45:49.70 |
-29:38:29.9 |
HIP 81964 |
15.82 |
| 2026-04-13 00:00 |
16:45:44.06 |
-29:39:26.2 |
HIP 81964 |
14.64 |
| 2026-04-13 12:00 |
16:45:38.32 |
-29:40:22.4 |
HIP 81964 |
13.52 |
| 2026-04-14 00:00 |
16:45:32.51 |
-29:41:18.4 |
HIP 81964 |
12.48 |
| 2026-04-14 12:00 |
16:45:26.61 |
-29:42:14.2 |
HIP 81964 |
11.54 |
| 2026-04-15 00:00 |
16:45:20.63 |
-29:43:09.9 |
HIP 81964 |
10.74 |
| 2026-04-15 12:00 |
16:45:14.56 |
-29:44:05.4 |
HIP 81964 |
10.11 |
| 2026-04-16 00:00 |
16:45:08.41 |
-29:45:00.7 |
HIP 81964 |
9.69 |