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) |
| 2026-07-29 00:00 |
12:48:30.70 |
-19:16:06.5 |
HIP 62518 |
14.54 |
| 2026-07-29 12:00 |
12:48:32.01 |
-19:16:00.3 |
HIP 62518 |
14.58 |
| 2026-07-30 00:00 |
12:48:33.36 |
-19:15:54.3 |
HIP 62518 |
14.62 |
| 2026-07-30 12:00 |
12:48:34.74 |
-19:15:48.6 |
HIP 62518 |
14.67 |
| 2026-07-31 00:00 |
12:48:36.15 |
-19:15:43.1 |
HIP 62518 |
14.72 |
| 2026-07-31 12:00 |
12:48:37.59 |
-19:15:37.9 |
HIP 62518 |
14.77 |
| 2026-08-01 00:00 |
12:48:39.07 |
-19:15:32.9 |
HIP 62518 |
14.82 |
| 2026-08-01 12:00 |
12:48:40.57 |
-19:15:28.2 |
HIP 62518 |
14.88 |
| 2026-08-02 00:00 |
12:48:42.11 |
-19:15:23.7 |
HIP 62518 |
14.95 |
| 2026-08-02 12:00 |
12:48:43.67 |
-19:15:19.4 |
HIP 62518 |
15.01 |
| 2026-08-03 00:00 |
12:48:45.27 |
-19:15:15.4 |
HIP 62518 |
15.09 |
| 2026-08-03 12:00 |
12:48:46.90 |
-19:15:11.6 |
HIP 62518 |
15.17 |
| 2026-08-04 00:00 |
12:48:48.55 |
-19:15:08.1 |
HIP 62518 |
15.25 |
| 2026-08-04 12:00 |
12:48:50.24 |
-19:15:04.9 |
HIP 62518 |
15.34 |
| 2026-08-05 00:00 |
12:48:51.96 |
-19:15:01.8 |
HIP 62518 |
15.44 |
| 2026-08-05 12:00 |
12:48:53.71 |
-19:14:59.0 |
HIP 62518 |
15.54 |
| 2026-08-06 00:00 |
12:48:55.48 |
-19:14:56.5 |
HIP 62518 |
15.66 |
| 2026-08-06 12:00 |
12:48:57.29 |
-19:14:54.2 |
HIP 62518 |
15.78 |
| 2026-08-07 00:00 |
12:48:59.13 |
-19:14:52.2 |
HIP 62518 |
15.91 |
| 2026-08-07 12:00 |
12:49:00.99 |
-19:14:50.4 |
HIP 62518 |
16.04 |
| 2026-08-08 00:00 |
12:49:02.89 |
-19:14:48.8 |
HIP 62518 |
16.19 |
| 2026-08-08 12:00 |
12:49:04.81 |
-19:14:47.5 |
HIP 62518 |
16.34 |
| 2026-08-09 00:00 |
12:49:06.77 |
-19:14:46.5 |
HIP 62518 |
16.51 |
| 2026-08-09 12:00 |
12:49:08.75 |
-19:14:45.6 |
HIP 62518 |
16.68 |
| 2026-08-10 00:00 |
12:49:10.76 |
-19:14:45.1 |
HIP 62518 |
16.87 |
| 2026-08-10 12:00 |
12:49:12.80 |
-19:14:44.7 |
HIP 62518 |
17.06 |
| 2026-08-11 00:00 |
12:49:14.87 |
-19:14:44.7 |
HIP 62518 |
17.27 |
| 2026-08-11 12:00 |
12:49:16.96 |
-19:14:44.8 |
HIP 62518 |
17.48 |
| 2026-08-12 00:00 |
12:49:19.08 |
-19:14:45.2 |
HIP 62518 |
17.71 |
| 2026-08-12 12:00 |
12:49:21.23 |
-19:14:45.9 |
HIP 62518 |
17.95 |
| 2026-08-13 00:00 |
12:49:23.41 |
-19:14:46.8 |
HIP 62518 |
18.19 |
| 2026-08-13 12:00 |
12:49:25.62 |
-19:14:47.9 |
HIP 62518 |
18.45 |
| 2026-08-14 00:00 |
12:49:27.85 |
-19:14:49.3 |
HIP 62518 |
18.72 |
| 2026-08-14 12:00 |
12:49:30.11 |
-19:14:50.9 |
HIP 62518 |
19.01 |
| 2026-08-15 00:00 |
12:49:32.39 |
-19:14:52.7 |
HIP 62518 |
19.30 |
| 2026-08-15 12:00 |
12:49:34.71 |
-19:14:54.9 |
HIP 62518 |
19.60 |
| 2026-08-16 00:00 |
12:49:37.04 |
-19:14:57.2 |
HIP 62518 |
19.92 |
| 2026-08-16 12:00 |
12:49:39.41 |
-19:14:59.8 |
HIP 62518 |
20.24 |
| 2026-08-17 00:00 |
12:49:41.80 |
-19:15:02.6 |
HIP 62518 |
20.58 |
| 2026-08-17 12:00 |
12:49:44.21 |
-19:15:05.6 |
HIP 62518 |
20.93 |
| 2026-08-18 00:00 |
12:49:46.65 |
-19:15:08.9 |
HIP 62518 |
21.29 |
| 2026-08-18 12:00 |
12:49:49.12 |
-19:15:12.5 |
HIP 62518 |
21.66 |
| 2026-08-19 00:00 |
12:49:51.61 |
-19:15:16.2 |
HIP 62518 |
22.04 |