메타데이터
| 항목 |
값 |
| Designation |
C/2025 M1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2029-08-03T09:20:42.449280Z |
| Orbit solution date (soln_date, UTC) |
2026-07-16T19:12:19Z |
| Obs used |
80 |
| NEO |
- |
| M1 |
6.600 |
| 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) |
2025-03-25.0000000 |
| e |
0.99825526 |
| q (au) |
10.828162 |
| a (au) |
6206.164211 |
| i (deg) |
64.904222 |
| Ω (om, deg) |
66.958465 |
| ω (w, deg) |
230.435853 |
| M (ma, deg) |
359.996790 |
밝기
산란 + 전체 선형
$$
M_a = (5.650 + 5.538\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.650 |
| n |
5.538 |
| gf |
1.000 |
| gb |
-0.914 |
| k |
0.800 |
| δ90 |
9.989 |
| 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) |
| 2026-09-20 00:00 |
16:15:21.43 |
-32:26:05.2 |
HIP 79630 |
5.18 |
| 2026-09-20 12:00 |
16:15:26.57 |
-32:26:41.7 |
HIP 79630 |
6.22 |
| 2026-09-21 00:00 |
16:15:31.80 |
-32:27:18.4 |
HIP 79630 |
7.35 |
| 2026-09-21 12:00 |
16:15:37.10 |
-32:27:55.4 |
HIP 79630 |
8.53 |
| 2026-09-22 00:00 |
16:15:42.49 |
-32:28:32.5 |
HIP 79630 |
9.75 |
| 2026-09-22 12:00 |
16:15:47.96 |
-32:29:09.9 |
HIP 79738 |
9.53 |
| 2026-09-23 00:00 |
16:15:53.52 |
-32:29:47.6 |
HIP 79738 |
8.22 |
| 2026-09-23 12:00 |
16:15:59.15 |
-32:30:25.4 |
HIP 79738 |
6.89 |
| 2026-09-24 00:00 |
16:16:04.87 |
-32:31:03.5 |
HIP 79738 |
5.55 |
| 2026-09-24 12:00 |
16:16:10.67 |
-32:31:41.9 |
HIP 79738 |
4.22 |
| 2026-09-25 00:00 |
16:16:16.55 |
-32:32:20.4 |
HIP 79738 |
2.92 |
| 2026-09-25 12:00 |
16:16:22.51 |
-32:32:59.2 |
HIP 79738 |
1.76 |
| 2026-09-26 00:00 |
16:16:28.54 |
-32:33:38.2 |
HIP 79738 |
1.30 |
| 2026-09-26 12:00 |
16:16:34.66 |
-32:34:17.5 |
HIP 79738 |
2.10 |
| 2026-09-27 00:00 |
16:16:40.86 |
-32:34:57.0 |
HIP 79738 |
3.38 |
| 2026-09-27 12:00 |
16:16:47.14 |
-32:35:36.7 |
HIP 79738 |
4.78 |
| 2026-09-28 00:00 |
16:16:53.49 |
-32:36:16.7 |
HIP 79738 |
6.24 |
| 2026-09-28 12:00 |
16:16:59.92 |
-32:36:56.8 |
HIP 79738 |
7.73 |
| 2026-09-29 00:00 |
16:17:06.43 |
-32:37:37.3 |
HIP 79738 |
9.24 |
| 2026-09-29 12:00 |
16:17:13.02 |
-32:38:17.9 |
HIP 79738 |
10.77 |
| 2026-09-30 00:00 |
16:17:19.69 |
-32:38:58.8 |
HIP 79738 |
12.32 |
| 2026-09-30 12:00 |
16:17:26.43 |
-32:39:39.9 |
HIP 79738 |
13.89 |
| 2026-10-01 00:00 |
16:17:33.25 |
-32:40:21.3 |
HIP 79738 |
15.48 |
| 2026-10-01 12:00 |
16:17:40.14 |
-32:41:02.8 |
HIP 79738 |
17.08 |
| 2026-10-02 00:00 |
16:17:47.11 |
-32:41:44.7 |
HIP 79883 |
17.32 |
| 2026-10-02 12:00 |
16:17:54.16 |
-32:42:26.7 |
HIP 79883 |
16.12 |
| 2026-10-03 00:00 |
16:18:01.28 |
-32:43:09.0 |
HIP 79883 |
14.99 |
| 2026-10-03 12:00 |
16:18:08.47 |
-32:43:51.5 |
HIP 79883 |
13.96 |
| 2026-10-04 00:00 |
16:18:15.74 |
-32:44:34.3 |
HIP 79883 |
13.06 |
| 2026-10-04 12:00 |
16:18:23.09 |
-32:45:17.3 |
HIP 79883 |
12.32 |
| 2026-10-05 00:00 |
16:18:30.51 |
-32:46:00.5 |
HIP 79883 |
11.78 |
| 2026-10-05 12:00 |
16:18:38.00 |
-32:46:44.0 |
HIP 79883 |
11.48 |
| 2026-10-06 00:00 |
16:18:45.56 |
-32:47:27.7 |
HIP 79883 |
11.43 |
| 2026-10-06 12:00 |
16:18:53.20 |
-32:48:11.7 |
HIP 79883 |
11.66 |
| 2026-10-07 00:00 |
16:19:00.90 |
-32:48:55.8 |
HIP 79883 |
12.15 |
| 2026-10-07 12:00 |
16:19:08.68 |
-32:49:40.2 |
HIP 79883 |
12.87 |
| 2026-10-08 00:00 |
16:19:16.54 |
-32:50:24.9 |
HIP 79883 |
13.81 |
| 2026-10-08 12:00 |
16:19:24.46 |
-32:51:09.8 |
HIP 79883 |
14.91 |
| 2026-10-09 00:00 |
16:19:32.45 |
-32:51:54.9 |
HIP 79883 |
16.16 |
| 2026-10-09 12:00 |
16:19:40.51 |
-32:52:40.3 |
HIP 79883 |
17.53 |
| 2026-10-10 00:00 |
16:19:48.64 |
-32:53:25.9 |
HIP 80080 |
16.71 |
| 2026-10-10 12:00 |
16:19:56.84 |
-32:54:11.7 |
HIP 80080 |
15.06 |
| 2026-10-11 00:00 |
16:20:05.11 |
-32:54:57.8 |
HIP 80080 |
13.47 |