메타데이터
| 항목 |
값 |
| Designation |
C/2006 M2 (Spacewatch) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-12-31T16:30:25.462080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:58Z |
| Obs used |
39 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2006-06-21.0000000 |
| e |
1.00240603 |
| q (au) |
5.313061 |
| a (au) |
-2208.224277 |
| i (deg) |
150.152651 |
| Ω (om, deg) |
27.284430 |
| ω (w, deg) |
120.496862 |
| M (ma, deg) |
0.001627 |
밝기
산란 + 전체 선형
$$
M_a = (7.964 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.964 |
| n |
6.000 |
| gf |
0.949 |
| gb |
-0.773 |
| k |
0.971 |
| δ90 |
9.981 |
| 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 |
08:25:14.53 |
-11:05:41.9 |
HIP 41229 |
21.94 |
| 2026-03-26 12:00 |
08:25:12.68 |
-11:05:15.1 |
HIP 41229 |
21.39 |
| 2026-03-27 00:00 |
08:25:10.85 |
-11:04:48.3 |
HIP 41229 |
20.83 |
| 2026-03-27 12:00 |
08:25:09.05 |
-11:04:21.5 |
HIP 41229 |
20.29 |
| 2026-03-28 00:00 |
08:25:07.28 |
-11:03:54.7 |
HIP 41229 |
19.75 |
| 2026-03-28 12:00 |
08:25:05.53 |
-11:03:27.8 |
HIP 41229 |
19.21 |
| 2026-03-29 00:00 |
08:25:03.80 |
-11:03:01.0 |
HIP 41229 |
18.69 |
| 2026-03-29 12:00 |
08:25:02.10 |
-11:02:34.1 |
HIP 41229 |
18.17 |
| 2026-03-30 00:00 |
08:25:00.43 |
-11:02:07.3 |
HIP 41229 |
17.66 |
| 2026-03-30 12:00 |
08:24:58.78 |
-11:01:40.4 |
HIP 41229 |
17.15 |
| 2026-03-31 00:00 |
08:24:57.16 |
-11:01:13.6 |
HIP 41229 |
16.65 |
| 2026-03-31 12:00 |
08:24:55.56 |
-11:00:46.7 |
HIP 41229 |
16.16 |
| 2026-04-01 00:00 |
08:24:53.99 |
-11:00:19.9 |
HIP 41229 |
15.68 |
| 2026-04-01 12:00 |
08:24:52.44 |
-10:59:53.0 |
HIP 41229 |
15.20 |
| 2026-04-02 00:00 |
08:24:50.93 |
-10:59:26.2 |
HIP 41229 |
14.73 |
| 2026-04-02 12:00 |
08:24:49.43 |
-10:58:59.4 |
HIP 41229 |
14.28 |
| 2026-04-03 00:00 |
08:24:47.97 |
-10:58:32.6 |
HIP 41229 |
13.83 |
| 2026-04-03 12:00 |
08:24:46.53 |
-10:58:05.8 |
HIP 41229 |
13.39 |
| 2026-04-04 00:00 |
08:24:45.11 |
-10:57:39.0 |
HIP 41229 |
12.96 |
| 2026-04-04 12:00 |
08:24:43.72 |
-10:57:12.3 |
HIP 41229 |
12.54 |
| 2026-04-05 00:00 |
08:24:42.36 |
-10:56:45.5 |
HIP 41229 |
12.13 |
| 2026-04-05 12:00 |
08:24:41.02 |
-10:56:18.8 |
HIP 41229 |
11.74 |
| 2026-04-06 00:00 |
08:24:39.72 |
-10:55:52.1 |
HIP 41229 |
11.36 |
| 2026-04-06 12:00 |
08:24:38.43 |
-10:55:25.5 |
HIP 41229 |
10.98 |
| 2026-04-07 00:00 |
08:24:37.18 |
-10:54:58.9 |
HIP 41229 |
10.63 |
| 2026-04-07 12:00 |
08:24:35.95 |
-10:54:32.3 |
HIP 41229 |
10.29 |
| 2026-04-08 00:00 |
08:24:34.75 |
-10:54:05.7 |
HIP 41229 |
9.96 |
| 2026-04-08 12:00 |
08:24:33.57 |
-10:53:39.2 |
HIP 41229 |
9.65 |
| 2026-04-09 00:00 |
08:24:32.42 |
-10:53:12.7 |
HIP 41229 |
9.36 |
| 2026-04-09 12:00 |
08:24:31.30 |
-10:52:46.2 |
HIP 41229 |
9.08 |
| 2026-04-10 00:00 |
08:24:30.20 |
-10:52:19.8 |
HIP 41229 |
8.83 |
| 2026-04-10 12:00 |
08:24:29.13 |
-10:51:53.4 |
HIP 41229 |
8.59 |
| 2026-04-11 00:00 |
08:24:28.09 |
-10:51:27.1 |
HIP 41229 |
8.38 |
| 2026-04-11 12:00 |
08:24:27.08 |
-10:51:00.8 |
HIP 41229 |
8.19 |
| 2026-04-12 00:00 |
08:24:26.09 |
-10:50:34.6 |
HIP 41229 |
8.02 |
| 2026-04-12 12:00 |
08:24:25.13 |
-10:50:08.4 |
HIP 41229 |
7.88 |
| 2026-04-13 00:00 |
08:24:24.19 |
-10:49:42.2 |
HIP 41229 |
7.76 |
| 2026-04-13 12:00 |
08:24:23.29 |
-10:49:16.1 |
HIP 41229 |
7.66 |
| 2026-04-14 00:00 |
08:24:22.41 |
-10:48:50.1 |
HIP 41229 |
7.59 |
| 2026-04-14 12:00 |
08:24:21.56 |
-10:48:24.1 |
HIP 41229 |
7.55 |
| 2026-04-15 00:00 |
08:24:20.73 |
-10:47:58.2 |
HIP 41229 |
7.53 |
| 2026-04-15 12:00 |
08:24:19.93 |
-10:47:32.4 |
HIP 41229 |
7.54 |
| 2026-04-16 00:00 |
08:24:19.16 |
-10:47:06.6 |
HIP 41229 |
7.57 |