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) |
| 2026-06-01 00:00 |
21:52:32.56 |
-23:17:46.9 |
HIP 107877 |
15.73 |
| 2026-06-01 12:00 |
21:52:50.73 |
-23:13:14.1 |
HIP 107877 |
20.06 |
| 2026-06-02 00:00 |
21:53:08.46 |
-23:08:41.9 |
HIP 107877 |
25.07 |
| 2026-06-02 12:00 |
21:53:25.76 |
-23:04:10.3 |
HIP 107877 |
30.39 |
| 2026-06-03 00:00 |
21:53:42.61 |
-22:59:39.3 |
HIP 108243 |
27.89 |
| 2026-06-03 12:00 |
21:53:59.02 |
-22:55:08.8 |
HIP 108243 |
25.21 |
| 2026-06-04 00:00 |
21:54:14.99 |
-22:50:39.0 |
HIP 108243 |
23.79 |
| 2026-06-04 12:00 |
21:54:30.51 |
-22:46:09.7 |
HIP 108243 |
23.81 |
| 2026-06-05 00:00 |
21:54:45.58 |
-22:41:41.0 |
HIP 108243 |
25.22 |
| 2026-06-05 12:00 |
21:55:00.19 |
-22:37:13.0 |
HIP 108243 |
27.76 |
| 2026-06-06 00:00 |
21:55:14.36 |
-22:32:45.6 |
HIP 108243 |
31.12 |
| 2026-06-06 12:00 |
21:55:28.07 |
-22:28:18.7 |
HIP 108308 |
26.49 |
| 2026-06-07 00:00 |
21:55:41.32 |
-22:23:52.6 |
HIP 108308 |
21.10 |
| 2026-06-07 12:00 |
21:55:54.11 |
-22:19:27.0 |
HIP 108308 |
15.78 |
| 2026-06-08 00:00 |
21:56:06.44 |
-22:15:02.1 |
HIP 108308 |
10.52 |
| 2026-06-08 12:00 |
21:56:18.31 |
-22:10:37.9 |
HIP 108308 |
5.33 |
| 2026-06-09 00:00 |
21:56:29.71 |
-22:06:14.3 |
HIP 108308 |
0.26 |
| 2026-06-09 12:00 |
21:56:40.64 |
-22:01:51.3 |
HIP 108308 |
4.87 |
| 2026-06-10 00:00 |
21:56:51.11 |
-21:57:29.1 |
HIP 108308 |
9.87 |
| 2026-06-10 12:00 |
21:57:01.10 |
-21:53:07.5 |
HIP 108308 |
14.80 |
| 2026-06-11 00:00 |
21:57:10.63 |
-21:48:46.5 |
HIP 108308 |
19.68 |
| 2026-06-11 12:00 |
21:57:19.67 |
-21:44:26.3 |
HIP 108510 |
23.72 |
| 2026-06-12 00:00 |
21:57:28.24 |
-21:40:06.7 |
HIP 108510 |
20.87 |
| 2026-06-12 12:00 |
21:57:36.34 |
-21:35:47.8 |
HIP 108510 |
18.92 |
| 2026-06-13 00:00 |
21:57:43.95 |
-21:31:29.6 |
HIP 108510 |
18.12 |
| 2026-06-13 12:00 |
21:57:51.08 |
-21:27:12.1 |
HIP 108510 |
18.57 |
| 2026-06-14 00:00 |
21:57:57.73 |
-21:22:55.2 |
HIP 108494 |
16.05 |
| 2026-06-14 12:00 |
21:58:03.90 |
-21:18:39.1 |
HIP 108494 |
12.05 |
| 2026-06-15 00:00 |
21:58:09.58 |
-21:14:23.6 |
HIP 108494 |
8.67 |
| 2026-06-15 12:00 |
21:58:14.77 |
-21:10:08.9 |
HIP 108494 |
6.81 |
| 2026-06-16 00:00 |
21:58:19.48 |
-21:05:54.8 |
HIP 108494 |
7.60 |
| 2026-06-16 12:00 |
21:58:23.70 |
-21:01:41.4 |
HIP 108494 |
10.40 |
| 2026-06-17 00:00 |
21:58:27.44 |
-20:57:28.6 |
HIP 108494 |
14.03 |
| 2026-06-17 12:00 |
21:58:30.68 |
-20:53:16.6 |
HIP 108494 |
17.96 |
| 2026-06-18 00:00 |
21:58:33.44 |
-20:49:05.2 |
HIP 108494 |
22.02 |
| 2026-06-18 12:00 |
21:58:35.70 |
-20:44:54.5 |
HIP 108494 |
26.14 |
| 2026-06-19 00:00 |
21:58:37.48 |
-20:40:44.4 |
HIP 108637 |
27.82 |
| 2026-06-19 12:00 |
21:58:38.77 |
-20:36:35.1 |
HIP 108637 |
29.08 |
| 2026-06-20 00:00 |
21:58:39.57 |
-20:32:26.3 |
HIP 108637 |
30.94 |
| 2026-06-20 12:00 |
21:58:39.88 |
-20:28:18.3 |
HIP 108545 |
29.48 |
| 2026-06-21 00:00 |
21:58:39.69 |
-20:24:10.9 |
HIP 108545 |
25.60 |
| 2026-06-21 12:00 |
21:58:39.02 |
-20:20:04.1 |
HIP 108545 |
21.88 |
| 2026-06-22 00:00 |
21:58:37.86 |
-20:15:58.0 |
HIP 108545 |
18.39 |