245P/WISE
메타데이터
| 항목 |
값 |
| Designation |
245P/WISE |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-02-04T12:53:48.733440Z |
| Orbit solution date (soln_date, UTC) |
2022-02-14T01:12:50Z |
| Obs used |
103 |
| NEO |
- |
| M1 |
17.400 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2009-08-05.0000000 |
| e |
0.46614825 |
| q (au) |
2.139432 |
| a (au) |
4.007539 |
| i (deg) |
21.087839 |
| Ω (om, deg) |
318.527206 |
| ω (w, deg) |
316.399919 |
| M (ma, deg) |
337.451800 |
밝기
산란 + 전체 선형
$$
M_a = (16.407 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.407 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
18:12:55.11 |
-38:06:27.5 |
HIP 89201 |
9.31 |
| 2026-02-03 12:00 |
18:14:15.29 |
-38:05:42.3 |
HIP 89361 |
19.08 |
| 2026-02-04 00:00 |
18:15:35.40 |
-38:04:54.6 |
HIP 89617 |
20.93 |
| 2026-02-04 12:00 |
18:16:55.44 |
-38:04:04.4 |
HIP 89617 |
7.91 |
| 2026-02-05 00:00 |
18:18:15.39 |
-38:03:11.8 |
HIP 89692 |
10.59 |
| 2026-02-05 12:00 |
18:19:35.27 |
-38:02:16.6 |
HIP 89692 |
19.45 |
| 2026-02-06 00:00 |
18:20:55.07 |
-38:01:19.0 |
HIP 89834 |
23.46 |
| 2026-02-06 12:00 |
18:22:14.79 |
-38:00:18.9 |
HIP 90038 |
32.42 |
| 2026-02-07 00:00 |
18:23:34.42 |
-37:59:16.4 |
HIP 90038 |
36.61 |
| 2026-02-07 12:00 |
18:24:53.96 |
-37:58:11.4 |
HIP 90254 |
36.32 |
| 2026-02-08 00:00 |
18:26:13.42 |
-37:57:03.9 |
HIP 90562 |
30.51 |
| 2026-02-08 12:00 |
18:27:32.78 |
-37:55:54.0 |
HIP 90562 |
15.63 |
| 2026-02-09 00:00 |
18:28:52.04 |
-37:54:41.6 |
HIP 90562 |
7.09 |
| 2026-02-09 12:00 |
18:30:11.21 |
-37:53:26.8 |
HIP 90562 |
18.64 |
| 2026-02-10 00:00 |
18:31:30.28 |
-37:52:09.6 |
HIP 90873 |
16.23 |
| 2026-02-10 12:00 |
18:32:49.25 |
-37:50:49.9 |
HIP 91017 |
16.56 |
| 2026-02-11 00:00 |
18:34:08.12 |
-37:49:27.9 |
HIP 91017 |
7.11 |
| 2026-02-11 12:00 |
18:35:26.88 |
-37:48:03.4 |
HIP 91242 |
17.00 |
| 2026-02-12 00:00 |
18:36:45.53 |
-37:46:36.6 |
HIP 91242 |
7.37 |
| 2026-02-12 12:00 |
18:38:04.07 |
-37:45:07.4 |
HIP 91370 |
10.31 |
| 2026-02-13 00:00 |
18:39:22.50 |
-37:43:35.8 |
HIP 91471 |
1.59 |
| 2026-02-13 12:00 |
18:40:40.81 |
-37:42:01.8 |
HIP 91616 |
5.36 |
| 2026-02-14 00:00 |
18:41:59.00 |
-37:40:25.5 |
HIP 91616 |
10.97 |
| 2026-02-14 12:00 |
18:43:17.08 |
-37:38:46.8 |
HIP 91616 |
26.36 |
| 2026-02-15 00:00 |
18:44:35.03 |
-37:37:05.7 |
HIP 91957 |
30.63 |
| 2026-02-15 12:00 |
18:45:52.86 |
-37:35:22.4 |
HIP 92188 |
17.25 |
| 2026-02-16 00:00 |
18:47:10.56 |
-37:33:36.7 |
HIP 92188 |
1.82 |
| 2026-02-16 12:00 |
18:48:28.13 |
-37:31:48.7 |
HIP 92263 |
4.36 |
| 2026-02-17 00:00 |
18:49:45.57 |
-37:29:58.4 |
HIP 92263 |
18.52 |
| 2026-02-17 12:00 |
18:51:02.88 |
-37:28:05.8 |
HIP 92502 |
13.24 |
| 2026-02-18 00:00 |
18:52:20.05 |
-37:26:11.0 |
HIP 92596 |
17.31 |
| 2026-02-18 12:00 |
18:53:37.08 |
-37:24:13.8 |
HIP 92858 |
20.94 |
| 2026-02-19 00:00 |
18:54:53.97 |
-37:22:14.4 |
HIP 92866 |
5.95 |
| 2026-02-19 12:00 |
18:56:10.72 |
-37:20:12.8 |
HIP 92989 |
5.93 |
| 2026-02-20 00:00 |
18:57:27.32 |
-37:18:08.9 |
HIP 93125 |
9.51 |
| 2026-02-20 12:00 |
18:58:43.78 |
-37:16:02.8 |
HIP 93125 |
6.46 |
| 2026-02-21 00:00 |
19:00:00.09 |
-37:13:54.4 |
HIP 93368 |
16.24 |
| 2026-02-21 12:00 |
19:01:16.25 |
-37:11:43.9 |
HIP 93371 |
8.39 |
| 2026-02-22 00:00 |
19:02:32.26 |
-37:09:31.1 |
HIP 93449 |
14.58 |
| 2026-02-22 12:00 |
19:03:48.11 |
-37:07:16.2 |
HIP 93689 |
20.04 |
| 2026-02-23 00:00 |
19:05:03.80 |
-37:04:59.1 |
HIP 93689 |
14.82 |
| 2026-02-23 12:00 |
19:06:19.34 |
-37:02:39.9 |
HIP 93825 |
1.58 |
| 2026-02-24 00:00 |
19:07:34.72 |
-37:00:18.4 |
HIP 93962 |
8.65 |