C/2005 J2 (Catalina)
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) |
| 2026-02-03 00:00 |
03:15:33.77 |
+08:33:03.3 |
HIP 15099 |
28.32 |
| 2026-02-03 12:00 |
03:15:33.15 |
+08:33:10.2 |
HIP 15099 |
28.15 |
| 2026-02-04 00:00 |
03:15:32.56 |
+08:33:17.2 |
HIP 15099 |
27.99 |
| 2026-02-04 12:00 |
03:15:31.99 |
+08:33:24.2 |
HIP 15099 |
27.82 |
| 2026-02-05 00:00 |
03:15:31.45 |
+08:33:31.4 |
HIP 15099 |
27.66 |
| 2026-02-05 12:00 |
03:15:30.93 |
+08:33:38.7 |
HIP 15099 |
27.50 |
| 2026-02-06 00:00 |
03:15:30.44 |
+08:33:46.1 |
HIP 15099 |
27.33 |
| 2026-02-06 12:00 |
03:15:29.98 |
+08:33:53.6 |
HIP 15099 |
27.17 |
| 2026-02-07 00:00 |
03:15:29.54 |
+08:34:01.2 |
HIP 15099 |
27.02 |
| 2026-02-07 12:00 |
03:15:29.13 |
+08:34:09.0 |
HIP 15099 |
26.86 |
| 2026-02-08 00:00 |
03:15:28.75 |
+08:34:16.8 |
HIP 15099 |
26.70 |
| 2026-02-08 12:00 |
03:15:28.39 |
+08:34:24.7 |
HIP 15099 |
26.55 |
| 2026-02-09 00:00 |
03:15:28.06 |
+08:34:32.7 |
HIP 15099 |
26.39 |
| 2026-02-09 12:00 |
03:15:27.76 |
+08:34:40.9 |
HIP 15099 |
26.24 |
| 2026-02-10 00:00 |
03:15:27.48 |
+08:34:49.1 |
HIP 15099 |
26.08 |
| 2026-02-10 12:00 |
03:15:27.23 |
+08:34:57.4 |
HIP 15099 |
25.93 |
| 2026-02-11 00:00 |
03:15:27.01 |
+08:35:05.8 |
HIP 15099 |
25.78 |
| 2026-02-11 12:00 |
03:15:26.81 |
+08:35:14.4 |
HIP 15099 |
25.63 |
| 2026-02-12 00:00 |
03:15:26.64 |
+08:35:23.0 |
HIP 15099 |
25.48 |
| 2026-02-12 12:00 |
03:15:26.49 |
+08:35:31.7 |
HIP 15099 |
25.33 |
| 2026-02-13 00:00 |
03:15:26.37 |
+08:35:40.6 |
HIP 15099 |
25.19 |
| 2026-02-13 12:00 |
03:15:26.28 |
+08:35:49.5 |
HIP 15099 |
25.04 |
| 2026-02-14 00:00 |
03:15:26.22 |
+08:35:58.5 |
HIP 15099 |
24.90 |
| 2026-02-14 12:00 |
03:15:26.18 |
+08:36:07.6 |
HIP 15099 |
24.75 |
| 2026-02-15 00:00 |
03:15:26.16 |
+08:36:16.8 |
HIP 15099 |
24.61 |
| 2026-02-15 12:00 |
03:15:26.18 |
+08:36:26.1 |
HIP 15099 |
24.47 |
| 2026-02-16 00:00 |
03:15:26.22 |
+08:36:35.5 |
HIP 15099 |
24.33 |
| 2026-02-16 12:00 |
03:15:26.28 |
+08:36:45.0 |
HIP 15099 |
24.19 |
| 2026-02-17 00:00 |
03:15:26.37 |
+08:36:54.6 |
HIP 15099 |
24.05 |
| 2026-02-17 12:00 |
03:15:26.49 |
+08:37:04.3 |
HIP 15099 |
23.92 |
| 2026-02-18 00:00 |
03:15:26.63 |
+08:37:14.0 |
HIP 15099 |
23.78 |
| 2026-02-18 12:00 |
03:15:26.80 |
+08:37:23.9 |
HIP 15099 |
23.65 |
| 2026-02-19 00:00 |
03:15:27.00 |
+08:37:33.8 |
HIP 15099 |
23.52 |
| 2026-02-19 12:00 |
03:15:27.22 |
+08:37:43.9 |
HIP 15099 |
23.39 |
| 2026-02-20 00:00 |
03:15:27.47 |
+08:37:54.0 |
HIP 15099 |
23.27 |
| 2026-02-20 12:00 |
03:15:27.74 |
+08:38:04.2 |
HIP 15099 |
23.14 |
| 2026-02-21 00:00 |
03:15:28.04 |
+08:38:14.5 |
HIP 15099 |
23.02 |
| 2026-02-21 12:00 |
03:15:28.36 |
+08:38:24.8 |
HIP 15099 |
22.90 |
| 2026-02-22 00:00 |
03:15:28.71 |
+08:38:35.3 |
HIP 15099 |
22.78 |
| 2026-02-22 12:00 |
03:15:29.09 |
+08:38:45.8 |
HIP 15099 |
22.67 |
| 2026-02-23 00:00 |
03:15:29.49 |
+08:38:56.4 |
HIP 15099 |
22.56 |
| 2026-02-23 12:00 |
03:15:29.92 |
+08:39:07.1 |
HIP 15099 |
22.45 |
| 2026-02-24 00:00 |
03:15:30.37 |
+08:39:17.9 |
HIP 15099 |
22.35 |