메타데이터
| 항목 |
값 |
| Designation |
367P/Catalina |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-11-29T20:09:13.155840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:37Z |
| Obs used |
129 |
| NEO |
- |
| M1 |
14.300 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-04-12.0000000 |
| e |
0.27988242 |
| q (au) |
2.528309 |
| a (au) |
3.510967 |
| i (deg) |
8.459533 |
| Ω (om, deg) |
58.741477 |
| ω (w, deg) |
173.479131 |
| M (ma, deg) |
20.099623 |
밝기
산란 + 전체 선형
$$
M_a = (17.113 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.113 |
| n |
2.000 |
| gf |
0.973 |
| gb |
-0.509 |
| k |
1.000 |
| δ90 |
9.568 |
| 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) |
| 2026-05-12 00:00 |
23:39:27.11 |
-10:25:43.2 |
HIP 116811 |
19.39 |
| 2026-05-12 12:00 |
23:39:55.67 |
-10:23:22.9 |
HIP 116811 |
12.69 |
| 2026-05-13 00:00 |
23:40:24.10 |
-10:21:03.6 |
HIP 116811 |
7.49 |
| 2026-05-13 12:00 |
23:40:52.39 |
-10:18:45.3 |
HIP 116811 |
7.70 |
| 2026-05-14 00:00 |
23:41:20.55 |
-10:16:28.1 |
HIP 116811 |
13.02 |
| 2026-05-14 12:00 |
23:41:48.58 |
-10:14:12.0 |
HIP 116811 |
19.61 |
| 2026-05-15 00:00 |
23:42:16.47 |
-10:11:56.8 |
HIP 116811 |
26.52 |
| 2026-05-15 12:00 |
23:42:44.22 |
-10:09:42.8 |
HIP 117044 |
31.98 |
| 2026-05-16 00:00 |
23:43:11.84 |
-10:07:29.8 |
HIP 117044 |
27.73 |
| 2026-05-16 12:00 |
23:43:39.32 |
-10:05:17.9 |
HIP 117044 |
24.87 |
| 2026-05-17 00:00 |
23:44:06.67 |
-10:03:07.1 |
HIP 117044 |
23.87 |
| 2026-05-17 12:00 |
23:44:33.87 |
-10:00:57.4 |
HIP 117044 |
24.91 |
| 2026-05-18 00:00 |
23:45:00.93 |
-09:58:48.8 |
HIP 117044 |
27.75 |
| 2026-05-18 12:00 |
23:45:27.86 |
-09:56:41.3 |
HIP 117318 |
28.70 |
| 2026-05-19 00:00 |
23:45:54.64 |
-09:54:34.9 |
HIP 117318 |
21.78 |
| 2026-05-19 12:00 |
23:46:21.27 |
-09:52:29.6 |
HIP 117318 |
14.90 |
| 2026-05-20 00:00 |
23:46:47.77 |
-09:50:25.4 |
HIP 117318 |
8.06 |
| 2026-05-20 12:00 |
23:47:14.11 |
-09:48:22.4 |
HIP 117318 |
1.35 |
| 2026-05-21 00:00 |
23:47:40.32 |
-09:46:20.5 |
HIP 117318 |
5.56 |
| 2026-05-21 12:00 |
23:48:06.37 |
-09:44:19.8 |
HIP 117318 |
12.27 |
| 2026-05-22 00:00 |
23:48:32.29 |
-09:42:20.2 |
HIP 117351 |
18.84 |
| 2026-05-22 12:00 |
23:48:58.05 |
-09:40:21.8 |
HIP 117533 |
19.04 |
| 2026-05-23 00:00 |
23:49:23.66 |
-09:38:24.5 |
HIP 117533 |
12.45 |
| 2026-05-23 12:00 |
23:49:49.13 |
-09:36:28.4 |
HIP 117533 |
5.95 |
| 2026-05-24 00:00 |
23:50:14.45 |
-09:34:33.5 |
HIP 117533 |
1.39 |
| 2026-05-24 12:00 |
23:50:39.61 |
-09:32:39.7 |
HIP 117533 |
7.29 |
| 2026-05-25 00:00 |
23:51:04.63 |
-09:30:47.1 |
HIP 117533 |
13.69 |
| 2026-05-25 12:00 |
23:51:29.49 |
-09:28:55.7 |
HIP 117713 |
14.18 |
| 2026-05-26 00:00 |
23:51:54.20 |
-09:27:05.5 |
HIP 117719 |
9.07 |
| 2026-05-26 12:00 |
23:52:18.75 |
-09:25:16.6 |
HIP 117719 |
2.74 |
| 2026-05-27 00:00 |
23:52:43.16 |
-09:23:28.8 |
HIP 117719 |
3.54 |
| 2026-05-27 12:00 |
23:53:07.40 |
-09:21:42.2 |
HIP 117719 |
9.78 |
| 2026-05-28 00:00 |
23:53:31.50 |
-09:19:56.8 |
HIP 117843 |
8.17 |
| 2026-05-28 12:00 |
23:53:55.43 |
-09:18:12.7 |
HIP 117843 |
2.03 |
| 2026-05-29 00:00 |
23:54:19.21 |
-09:16:29.8 |
HIP 117843 |
4.11 |
| 2026-05-29 12:00 |
23:54:42.83 |
-09:14:48.1 |
HIP 117843 |
10.17 |
| 2026-05-30 00:00 |
23:55:06.29 |
-09:13:07.6 |
HIP 117977 |
13.31 |
| 2026-05-30 12:00 |
23:55:29.59 |
-09:11:28.5 |
HIP 117977 |
8.58 |
| 2026-05-31 00:00 |
23:55:52.72 |
-09:09:50.5 |
HIP 117977 |
6.47 |
| 2026-05-31 12:00 |
23:56:15.70 |
-09:08:13.8 |
HIP 117977 |
8.95 |
| 2026-06-01 00:00 |
23:56:38.51 |
-09:06:38.4 |
HIP 117977 |
13.67 |
| 2026-06-01 12:00 |
23:57:01.17 |
-09:05:04.3 |
HIP 117977 |
19.00 |
| 2026-06-02 00:00 |
23:57:23.65 |
-09:03:31.4 |
HIP 117977 |
24.50 |