메타데이터
| 항목 |
값 |
| Designation |
C/2014 M3 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-06-21T22:25:14.257920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:56Z |
| Obs used |
90 |
| NEO |
- |
| M1 |
12.900 |
| K1 |
12.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-07-27.0000000 |
| e |
0.98235311 |
| q (au) |
2.434267 |
| a (au) |
137.943094 |
| i (deg) |
164.909650 |
| Ω (om, deg) |
80.367465 |
| ω (w, deg) |
93.740309 |
| M (ma, deg) |
0.021332 |
밝기
산란 + 전체 선형
$$
M_a = (13.691 + 4.806\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.691 |
| n |
4.806 |
| gf |
1.000 |
| gb |
-0.540 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
12:59:41.46 |
-21:01:32.3 |
HIP 63538 |
26.17 |
| 2026-03-26 12:00 |
12:59:36.50 |
-21:01:08.5 |
HIP 63538 |
26.92 |
| 2026-03-27 00:00 |
12:59:31.53 |
-21:00:44.6 |
HIP 63261 |
25.82 |
| 2026-03-27 12:00 |
12:59:26.55 |
-21:00:20.4 |
HIP 63261 |
24.59 |
| 2026-03-28 00:00 |
12:59:21.57 |
-20:59:56.0 |
HIP 63261 |
23.36 |
| 2026-03-28 12:00 |
12:59:16.58 |
-20:59:31.4 |
HIP 63261 |
22.12 |
| 2026-03-29 00:00 |
12:59:11.59 |
-20:59:06.7 |
HIP 63261 |
20.88 |
| 2026-03-29 12:00 |
12:59:06.59 |
-20:58:41.7 |
HIP 63261 |
19.65 |
| 2026-03-30 00:00 |
12:59:01.59 |
-20:58:16.6 |
HIP 63261 |
18.41 |
| 2026-03-30 12:00 |
12:58:56.58 |
-20:57:51.3 |
HIP 63261 |
17.16 |
| 2026-03-31 00:00 |
12:58:51.57 |
-20:57:25.8 |
HIP 63261 |
15.92 |
| 2026-03-31 12:00 |
12:58:46.55 |
-20:57:00.1 |
HIP 63261 |
14.67 |
| 2026-04-01 00:00 |
12:58:41.53 |
-20:56:34.2 |
HIP 63261 |
13.42 |
| 2026-04-01 12:00 |
12:58:36.51 |
-20:56:08.1 |
HIP 63261 |
12.17 |
| 2026-04-02 00:00 |
12:58:31.49 |
-20:55:41.9 |
HIP 63261 |
10.92 |
| 2026-04-02 12:00 |
12:58:26.47 |
-20:55:15.5 |
HIP 63261 |
9.67 |
| 2026-04-03 00:00 |
12:58:21.44 |
-20:54:48.9 |
HIP 63261 |
8.41 |
| 2026-04-03 12:00 |
12:58:16.41 |
-20:54:22.1 |
HIP 63261 |
7.16 |
| 2026-04-04 00:00 |
12:58:11.38 |
-20:53:55.2 |
HIP 63261 |
5.90 |
| 2026-04-04 12:00 |
12:58:06.35 |
-20:53:28.1 |
HIP 63261 |
4.65 |
| 2026-04-05 00:00 |
12:58:01.32 |
-20:53:00.9 |
HIP 63261 |
3.39 |
| 2026-04-05 12:00 |
12:57:56.29 |
-20:52:33.4 |
HIP 63261 |
2.14 |
| 2026-04-06 00:00 |
12:57:51.26 |
-20:52:05.8 |
HIP 63261 |
0.91 |
| 2026-04-06 12:00 |
12:57:46.24 |
-20:51:38.1 |
HIP 63261 |
0.52 |
| 2026-04-07 00:00 |
12:57:41.21 |
-20:51:10.2 |
HIP 63261 |
1.70 |
| 2026-04-07 12:00 |
12:57:36.19 |
-20:50:42.1 |
HIP 63261 |
2.96 |
| 2026-04-08 00:00 |
12:57:31.16 |
-20:50:13.9 |
HIP 63261 |
4.21 |
| 2026-04-08 12:00 |
12:57:26.14 |
-20:49:45.6 |
HIP 63261 |
5.48 |
| 2026-04-09 00:00 |
12:57:21.12 |
-20:49:17.0 |
HIP 63261 |
6.74 |
| 2026-04-09 12:00 |
12:57:16.11 |
-20:48:48.4 |
HIP 63261 |
8.00 |
| 2026-04-10 00:00 |
12:57:11.10 |
-20:48:19.6 |
HIP 63261 |
9.27 |
| 2026-04-10 12:00 |
12:57:06.09 |
-20:47:50.6 |
HIP 63261 |
10.53 |
| 2026-04-11 00:00 |
12:57:01.09 |
-20:47:21.5 |
HIP 63261 |
11.80 |
| 2026-04-11 12:00 |
12:56:56.09 |
-20:46:52.3 |
HIP 63261 |
13.07 |
| 2026-04-12 00:00 |
12:56:51.10 |
-20:46:23.0 |
HIP 63261 |
14.33 |
| 2026-04-12 12:00 |
12:56:46.11 |
-20:45:53.5 |
HIP 63261 |
15.60 |
| 2026-04-13 00:00 |
12:56:41.13 |
-20:45:23.8 |
HIP 63261 |
16.86 |
| 2026-04-13 12:00 |
12:56:36.16 |
-20:44:54.1 |
HIP 63261 |
18.12 |
| 2026-04-14 00:00 |
12:56:31.19 |
-20:44:24.2 |
HIP 63064 |
17.54 |
| 2026-04-14 12:00 |
12:56:26.23 |
-20:43:54.2 |
HIP 63064 |
16.31 |
| 2026-04-15 00:00 |
12:56:21.27 |
-20:43:24.1 |
HIP 63064 |
15.09 |
| 2026-04-15 12:00 |
12:56:16.33 |
-20:42:53.9 |
HIP 63064 |
13.89 |
| 2026-04-16 00:00 |
12:56:11.39 |
-20:42:23.5 |
HIP 63064 |
12.69 |