메타데이터
| 항목 |
값 |
| Designation |
C/2005 J2 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-04-04T06:52:12.155520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-16T12:11:39Z |
| Obs used |
65 |
| NEO |
- |
| M1 |
9.000 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-05-25.0000000 |
| e |
1.00000000 |
| q (au) |
4.287489 |
| a (au) |
-433338614767.913574 |
| i (deg) |
150.803021 |
| Ω (om, deg) |
33.369506 |
| ω (w, deg) |
199.642613 |
| M (ma, deg) |
0.000000 |
밝기
산란 + 전체 선형
$$
M_a = (11.585 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.585 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-06-01 00:00 |
03:22:03.85 |
+09:20:23.8 |
HIP 15630 |
22.36 |
| 2026-06-01 12:00 |
03:22:06.36 |
+09:20:32.9 |
HIP 15630 |
22.55 |
| 2026-06-02 00:00 |
03:22:08.86 |
+09:20:41.9 |
HIP 15630 |
22.76 |
| 2026-06-02 12:00 |
03:22:11.36 |
+09:20:50.8 |
HIP 15630 |
22.99 |
| 2026-06-03 00:00 |
03:22:13.84 |
+09:20:59.6 |
HIP 15630 |
23.23 |
| 2026-06-03 12:00 |
03:22:16.32 |
+09:21:08.4 |
HIP 15630 |
23.49 |
| 2026-06-04 00:00 |
03:22:18.79 |
+09:21:17.0 |
HIP 15630 |
23.76 |
| 2026-06-04 12:00 |
03:22:21.25 |
+09:21:25.6 |
HIP 15630 |
24.04 |
| 2026-06-05 00:00 |
03:22:23.71 |
+09:21:34.1 |
HIP 15630 |
24.34 |
| 2026-06-05 12:00 |
03:22:26.16 |
+09:21:42.5 |
HIP 15630 |
24.64 |
| 2026-06-06 00:00 |
03:22:28.59 |
+09:21:50.8 |
HIP 15630 |
24.96 |
| 2026-06-06 12:00 |
03:22:31.02 |
+09:21:59.0 |
HIP 15630 |
25.29 |
| 2026-06-07 00:00 |
03:22:33.44 |
+09:22:07.2 |
HIP 15630 |
25.63 |
| 2026-06-07 12:00 |
03:22:35.85 |
+09:22:15.2 |
HIP 15630 |
25.98 |
| 2026-06-08 00:00 |
03:22:38.26 |
+09:22:23.2 |
HIP 15630 |
26.34 |
| 2026-06-08 12:00 |
03:22:40.65 |
+09:22:31.0 |
HIP 15630 |
26.70 |
| 2026-06-09 00:00 |
03:22:43.03 |
+09:22:38.8 |
HIP 15630 |
27.08 |
| 2026-06-09 12:00 |
03:22:45.40 |
+09:22:46.5 |
HIP 15630 |
27.46 |
| 2026-06-10 00:00 |
03:22:47.77 |
+09:22:54.1 |
HIP 15630 |
27.84 |
| 2026-06-10 12:00 |
03:22:50.12 |
+09:23:01.6 |
HIP 15630 |
28.24 |
| 2026-06-11 00:00 |
03:22:52.46 |
+09:23:09.0 |
HIP 15630 |
28.63 |
| 2026-06-11 12:00 |
03:22:54.80 |
+09:23:16.3 |
HIP 15630 |
29.04 |
| 2026-06-12 00:00 |
03:22:57.12 |
+09:23:23.5 |
HIP 15630 |
29.45 |
| 2026-06-12 12:00 |
03:22:59.43 |
+09:23:30.6 |
HIP 15630 |
29.86 |
| 2026-06-13 00:00 |
03:23:01.73 |
+09:23:37.6 |
HIP 15630 |
30.28 |
| 2026-06-13 12:00 |
03:23:04.02 |
+09:23:44.5 |
HIP 15630 |
30.70 |
| 2026-06-14 00:00 |
03:23:06.29 |
+09:23:51.4 |
HIP 15630 |
31.12 |
| 2026-06-14 12:00 |
03:23:08.56 |
+09:23:58.1 |
HIP 15630 |
31.55 |
| 2026-06-15 00:00 |
03:23:10.81 |
+09:24:04.7 |
HIP 15630 |
31.98 |
| 2026-06-15 12:00 |
03:23:13.06 |
+09:24:11.2 |
HIP 15630 |
32.41 |
| 2026-06-16 00:00 |
03:23:15.28 |
+09:24:17.7 |
HIP 15900 |
32.27 |
| 2026-06-16 12:00 |
03:23:17.50 |
+09:24:24.0 |
HIP 15900 |
31.96 |
| 2026-06-17 00:00 |
03:23:19.71 |
+09:24:30.3 |
HIP 15900 |
31.65 |
| 2026-06-17 12:00 |
03:23:21.90 |
+09:24:36.4 |
HIP 15900 |
31.35 |
| 2026-06-18 00:00 |
03:23:24.08 |
+09:24:42.4 |
HIP 15900 |
31.06 |
| 2026-06-18 12:00 |
03:23:26.24 |
+09:24:48.4 |
HIP 15900 |
30.78 |
| 2026-06-19 00:00 |
03:23:28.40 |
+09:24:54.2 |
HIP 15897 |
30.39 |
| 2026-06-19 12:00 |
03:23:30.54 |
+09:25:00.0 |
HIP 15897 |
29.99 |
| 2026-06-20 00:00 |
03:23:32.66 |
+09:25:05.6 |
HIP 15897 |
29.59 |
| 2026-06-20 12:00 |
03:23:34.77 |
+09:25:11.1 |
HIP 15936 |
29.19 |
| 2026-06-21 00:00 |
03:23:36.87 |
+09:25:16.5 |
HIP 15936 |
28.72 |
| 2026-06-21 12:00 |
03:23:38.96 |
+09:25:21.9 |
HIP 15936 |
28.24 |
| 2026-06-22 00:00 |
03:23:41.03 |
+09:25:27.1 |
HIP 15936 |
27.77 |