메타데이터
| 항목 |
값 |
| Designation |
C/2014 J1 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-06-20T00:22:18.560640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:54Z |
| Obs used |
103 |
| NEO |
- |
| M1 |
16.800 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-05-17.0000000 |
| e |
0.80239339 |
| q (au) |
1.708541 |
| a (au) |
8.646176 |
| i (deg) |
159.696475 |
| Ω (om, deg) |
41.942129 |
| ω (w, deg) |
195.480026 |
| M (ma, deg) |
358.681304 |
밝기
산란 + 전체 선형
$$
M_a = (19.181 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
19.181 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.553 |
| 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 |
01:39:02.73 |
+14:50:34.1 |
HIP 7762 |
27.84 |
| 2026-03-26 12:00 |
01:39:08.33 |
+14:51:06.6 |
HIP 7762 |
26.77 |
| 2026-03-27 00:00 |
01:39:13.94 |
+14:51:39.2 |
HIP 7762 |
25.72 |
| 2026-03-27 12:00 |
01:39:19.58 |
+14:52:12.0 |
HIP 7762 |
24.72 |
| 2026-03-28 00:00 |
01:39:25.23 |
+14:52:44.9 |
HIP 7762 |
23.76 |
| 2026-03-28 12:00 |
01:39:30.90 |
+14:53:18.0 |
HIP 7762 |
22.85 |
| 2026-03-29 00:00 |
01:39:36.59 |
+14:53:51.2 |
HIP 7762 |
22.00 |
| 2026-03-29 12:00 |
01:39:42.29 |
+14:54:24.6 |
HIP 7762 |
21.21 |
| 2026-03-30 00:00 |
01:39:48.01 |
+14:54:58.2 |
HIP 7762 |
20.50 |
| 2026-03-30 12:00 |
01:39:53.75 |
+14:55:31.9 |
HIP 7762 |
19.87 |
| 2026-03-31 00:00 |
01:39:59.51 |
+14:56:05.7 |
HIP 7762 |
19.34 |
| 2026-03-31 12:00 |
01:40:05.28 |
+14:56:39.7 |
HIP 7762 |
18.91 |
| 2026-04-01 00:00 |
01:40:11.06 |
+14:57:13.9 |
HIP 7762 |
18.58 |
| 2026-04-01 12:00 |
01:40:16.86 |
+14:57:48.1 |
HIP 7762 |
18.38 |
| 2026-04-02 00:00 |
01:40:22.68 |
+14:58:22.6 |
HIP 7762 |
18.30 |
| 2026-04-02 12:00 |
01:40:28.50 |
+14:58:57.1 |
HIP 7762 |
18.34 |
| 2026-04-03 00:00 |
01:40:34.35 |
+14:59:31.8 |
HIP 7762 |
18.51 |
| 2026-04-03 12:00 |
01:40:40.20 |
+15:00:06.6 |
HIP 7765 |
18.78 |
| 2026-04-04 00:00 |
01:40:46.07 |
+15:00:41.6 |
HIP 7765 |
19.17 |
| 2026-04-04 12:00 |
01:40:51.95 |
+15:01:16.6 |
HIP 7765 |
19.66 |
| 2026-04-05 00:00 |
01:40:57.84 |
+15:01:51.8 |
HIP 7765 |
20.26 |
| 2026-04-05 12:00 |
01:41:03.75 |
+15:02:27.2 |
HIP 7765 |
20.96 |
| 2026-04-06 00:00 |
01:41:09.66 |
+15:03:02.6 |
HIP 7765 |
21.75 |
| 2026-04-06 12:00 |
01:41:15.59 |
+15:03:38.2 |
HIP 7765 |
22.61 |
| 2026-04-07 00:00 |
01:41:21.52 |
+15:04:13.9 |
HIP 7765 |
23.55 |
| 2026-04-07 12:00 |
01:41:27.47 |
+15:04:49.7 |
HIP 7765 |
24.55 |
| 2026-04-08 00:00 |
01:41:33.43 |
+15:05:25.6 |
HIP 7765 |
25.60 |
| 2026-04-08 12:00 |
01:41:39.39 |
+15:06:01.6 |
HIP 7765 |
26.71 |
| 2026-04-09 00:00 |
01:41:45.37 |
+15:06:37.7 |
HIP 7765 |
27.86 |
| 2026-04-09 12:00 |
01:41:51.35 |
+15:07:13.9 |
HIP 8073 |
27.45 |
| 2026-04-10 00:00 |
01:41:57.34 |
+15:07:50.3 |
HIP 8073 |
26.14 |
| 2026-04-10 12:00 |
01:42:03.34 |
+15:08:26.7 |
HIP 8073 |
24.87 |
| 2026-04-11 00:00 |
01:42:09.35 |
+15:09:03.2 |
HIP 8073 |
23.63 |
| 2026-04-11 12:00 |
01:42:15.36 |
+15:09:39.9 |
HIP 8073 |
22.43 |
| 2026-04-12 00:00 |
01:42:21.38 |
+15:10:16.6 |
HIP 8073 |
21.27 |
| 2026-04-12 12:00 |
01:42:27.40 |
+15:10:53.4 |
HIP 8073 |
20.18 |
| 2026-04-13 00:00 |
01:42:33.43 |
+15:11:30.3 |
HIP 8073 |
19.15 |
| 2026-04-13 12:00 |
01:42:39.46 |
+15:12:07.3 |
HIP 8073 |
18.20 |
| 2026-04-14 00:00 |
01:42:45.50 |
+15:12:44.4 |
HIP 8073 |
17.35 |
| 2026-04-14 12:00 |
01:42:51.55 |
+15:13:21.6 |
HIP 8073 |
16.60 |
| 2026-04-15 00:00 |
01:42:57.59 |
+15:13:58.8 |
HIP 8073 |
15.97 |
| 2026-04-15 12:00 |
01:43:03.65 |
+15:14:36.1 |
HIP 8073 |
15.48 |
| 2026-04-16 00:00 |
01:43:09.70 |
+15:15:13.5 |
HIP 8073 |
15.15 |