메타데이터
| 항목 |
값 |
| Designation |
C/2025 O2 (MAPS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-05-23T16:42:19.152000Z |
| Orbit solution date (soln_date, UTC) |
2025-09-22T13:42:18Z |
| Obs used |
88 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
27.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-07-25T09:35:29.760000Z |
| Discovery magnitude (MPC) |
18.80 G |
| Discovery observatory (MPC) |
W94 · MAPS, San Pedro de Atacama |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-08-14.0000000 |
| e |
0.99886564 |
| q (au) |
2.288532 |
| a (au) |
2017.460252 |
| i (deg) |
134.542008 |
| Ω (om, deg) |
332.313059 |
| ω (w, deg) |
280.240987 |
| M (ma, deg) |
0.000895 |
밝기
산란 + 전체 선형
$$
M_a = (11.254 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.254 |
| n |
6.000 |
| gf |
0.998 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
10.000 |
| 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) |
| 2026-06-01 00:00 |
22:30:14.03 |
-01:48:08.1 |
HIP 110955 |
42.89 |
| 2026-06-01 12:00 |
22:29:58.24 |
-01:46:19.9 |
HIP 110848 |
38.79 |
| 2026-06-02 00:00 |
22:29:42.20 |
-01:44:32.6 |
HIP 110848 |
34.51 |
| 2026-06-02 12:00 |
22:29:25.92 |
-01:42:46.3 |
HIP 110848 |
30.21 |
| 2026-06-03 00:00 |
22:29:09.40 |
-01:41:01.1 |
HIP 110848 |
25.90 |
| 2026-06-03 12:00 |
22:28:52.63 |
-01:39:16.8 |
HIP 110848 |
21.60 |
| 2026-06-04 00:00 |
22:28:35.62 |
-01:37:33.5 |
HIP 110848 |
17.36 |
| 2026-06-04 12:00 |
22:28:18.36 |
-01:35:51.3 |
HIP 110848 |
13.28 |
| 2026-06-05 00:00 |
22:28:00.86 |
-01:34:10.1 |
HIP 110848 |
9.65 |
| 2026-06-05 12:00 |
22:27:43.11 |
-01:32:29.9 |
HIP 110848 |
7.29 |
| 2026-06-06 00:00 |
22:27:25.11 |
-01:30:50.8 |
HIP 110848 |
7.61 |
| 2026-06-06 12:00 |
22:27:06.86 |
-01:29:12.7 |
HIP 110848 |
10.44 |
| 2026-06-07 00:00 |
22:26:48.36 |
-01:27:35.7 |
HIP 110821 |
10.14 |
| 2026-06-07 12:00 |
22:26:29.62 |
-01:25:59.7 |
HIP 110821 |
11.89 |
| 2026-06-08 00:00 |
22:26:10.62 |
-01:24:24.8 |
HIP 110821 |
15.19 |
| 2026-06-08 12:00 |
22:25:51.38 |
-01:22:50.9 |
HIP 110821 |
19.31 |
| 2026-06-09 00:00 |
22:25:31.88 |
-01:21:18.2 |
HIP 110619 |
17.27 |
| 2026-06-09 12:00 |
22:25:12.14 |
-01:19:46.5 |
HIP 110619 |
12.49 |
| 2026-06-10 00:00 |
22:24:52.14 |
-01:18:16.0 |
HIP 110619 |
8.16 |
| 2026-06-10 12:00 |
22:24:31.89 |
-01:16:46.5 |
HIP 110619 |
5.65 |
| 2026-06-11 00:00 |
22:24:11.39 |
-01:15:18.1 |
HIP 110619 |
7.35 |
| 2026-06-11 12:00 |
22:23:50.64 |
-01:13:50.9 |
HIP 110619 |
11.59 |
| 2026-06-12 00:00 |
22:23:29.63 |
-01:12:24.8 |
HIP 110619 |
16.58 |
| 2026-06-12 12:00 |
22:23:08.37 |
-01:10:59.8 |
HIP 110619 |
21.85 |
| 2026-06-13 00:00 |
22:22:46.86 |
-01:09:36.0 |
HIP 110395 |
21.71 |
| 2026-06-13 12:00 |
22:22:25.10 |
-01:08:13.3 |
HIP 110395 |
18.88 |
| 2026-06-14 00:00 |
22:22:03.09 |
-01:06:51.8 |
HIP 110395 |
17.42 |
| 2026-06-14 12:00 |
22:21:40.82 |
-01:05:31.4 |
HIP 110395 |
17.72 |
| 2026-06-15 00:00 |
22:21:18.30 |
-01:04:12.2 |
HIP 110395 |
19.75 |
| 2026-06-15 12:00 |
22:20:55.53 |
-01:02:54.2 |
HIP 110395 |
23.09 |
| 2026-06-16 00:00 |
22:20:32.51 |
-01:01:37.3 |
HIP 110395 |
27.31 |
| 2026-06-16 12:00 |
22:20:09.23 |
-01:00:21.7 |
HIP 110224 |
25.66 |
| 2026-06-17 00:00 |
22:19:45.71 |
-00:59:07.2 |
HIP 110128 |
20.75 |
| 2026-06-17 12:00 |
22:19:21.94 |
-00:57:53.9 |
HIP 110128 |
16.16 |
| 2026-06-18 00:00 |
22:18:57.91 |
-00:56:41.8 |
HIP 110128 |
12.82 |
| 2026-06-18 12:00 |
22:18:33.64 |
-00:55:30.9 |
HIP 110128 |
11.91 |
| 2026-06-19 00:00 |
22:18:09.12 |
-00:54:21.3 |
HIP 110097 |
12.97 |
| 2026-06-19 12:00 |
22:17:44.35 |
-00:53:12.8 |
HIP 110097 |
15.41 |
| 2026-06-20 00:00 |
22:17:19.33 |
-00:52:05.6 |
HIP 110097 |
19.67 |
| 2026-06-20 12:00 |
22:16:54.07 |
-00:50:59.5 |
HIP 110097 |
24.87 |
| 2026-06-21 00:00 |
22:16:28.56 |
-00:49:54.8 |
HIP 109835 |
25.59 |
| 2026-06-21 12:00 |
22:16:02.81 |
-00:48:51.2 |
HIP 109835 |
19.08 |
| 2026-06-22 00:00 |
22:15:36.81 |
-00:47:48.9 |
HIP 109835 |
12.53 |