메타데이터
| 항목 |
값 |
| Designation |
C/2005 N5 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-08-22T16:21:26.827200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:51Z |
| Obs used |
233 |
| NEO |
- |
| M1 |
16.000 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-09-18.0000000 |
| e |
0.94327002 |
| q (au) |
1.627399 |
| a (au) |
28.686757 |
| i (deg) |
21.378745 |
| Ω (om, deg) |
156.411335 |
| ω (w, deg) |
207.765233 |
| M (ma, deg) |
0.168827 |
밝기
산란 + 전체 선형
$$
M_a = (15.595 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.595 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.994 |
| 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 |
11:18:44.73 |
+09:14:19.3 |
HIP 55263 |
31.23 |
| 2026-03-26 12:00 |
11:18:41.70 |
+09:14:38.1 |
HIP 55263 |
31.06 |
| 2026-03-27 00:00 |
11:18:38.68 |
+09:14:56.9 |
HIP 55263 |
30.91 |
| 2026-03-27 12:00 |
11:18:35.68 |
+09:15:15.5 |
HIP 55263 |
30.78 |
| 2026-03-28 00:00 |
11:18:32.68 |
+09:15:34.1 |
HIP 55263 |
30.68 |
| 2026-03-28 12:00 |
11:18:29.69 |
+09:15:52.5 |
HIP 55263 |
30.60 |
| 2026-03-29 00:00 |
11:18:26.71 |
+09:16:10.9 |
HIP 55263 |
30.54 |
| 2026-03-29 12:00 |
11:18:23.74 |
+09:16:29.1 |
HIP 55263 |
30.50 |
| 2026-03-30 00:00 |
11:18:20.78 |
+09:16:47.3 |
HIP 55263 |
30.48 |
| 2026-03-30 12:00 |
11:18:17.84 |
+09:17:05.3 |
HIP 55058 |
29.85 |
| 2026-03-31 00:00 |
11:18:14.90 |
+09:17:23.2 |
HIP 55058 |
29.15 |
| 2026-03-31 12:00 |
11:18:11.97 |
+09:17:41.1 |
HIP 55058 |
28.46 |
| 2026-04-01 00:00 |
11:18:09.06 |
+09:17:58.8 |
HIP 55058 |
27.77 |
| 2026-04-01 12:00 |
11:18:06.16 |
+09:18:16.4 |
HIP 55058 |
27.09 |
| 2026-04-02 00:00 |
11:18:03.27 |
+09:18:33.9 |
HIP 55058 |
26.42 |
| 2026-04-02 12:00 |
11:18:00.39 |
+09:18:51.3 |
HIP 55058 |
25.75 |
| 2026-04-03 00:00 |
11:17:57.52 |
+09:19:08.5 |
HIP 55058 |
25.10 |
| 2026-04-03 12:00 |
11:17:54.67 |
+09:19:25.7 |
HIP 55058 |
24.45 |
| 2026-04-04 00:00 |
11:17:51.83 |
+09:19:42.7 |
HIP 55058 |
23.81 |
| 2026-04-04 12:00 |
11:17:49.00 |
+09:19:59.7 |
HIP 55058 |
23.19 |
| 2026-04-05 00:00 |
11:17:46.19 |
+09:20:16.5 |
HIP 55058 |
22.57 |
| 2026-04-05 12:00 |
11:17:43.38 |
+09:20:33.1 |
HIP 55058 |
21.96 |
| 2026-04-06 00:00 |
11:17:40.60 |
+09:20:49.7 |
HIP 55058 |
21.37 |
| 2026-04-06 12:00 |
11:17:37.82 |
+09:21:06.2 |
HIP 55058 |
20.79 |
| 2026-04-07 00:00 |
11:17:35.06 |
+09:21:22.5 |
HIP 55058 |
20.22 |
| 2026-04-07 12:00 |
11:17:32.32 |
+09:21:38.7 |
HIP 55058 |
19.66 |
| 2026-04-08 00:00 |
11:17:29.58 |
+09:21:54.7 |
HIP 55058 |
19.12 |
| 2026-04-08 12:00 |
11:17:26.87 |
+09:22:10.7 |
HIP 55058 |
18.59 |
| 2026-04-09 00:00 |
11:17:24.17 |
+09:22:26.5 |
HIP 55058 |
18.08 |
| 2026-04-09 12:00 |
11:17:21.48 |
+09:22:42.2 |
HIP 55058 |
17.59 |
| 2026-04-10 00:00 |
11:17:18.81 |
+09:22:57.7 |
HIP 55058 |
17.11 |
| 2026-04-10 12:00 |
11:17:16.15 |
+09:23:13.2 |
HIP 55058 |
16.65 |
| 2026-04-11 00:00 |
11:17:13.51 |
+09:23:28.5 |
HIP 55058 |
16.22 |
| 2026-04-11 12:00 |
11:17:10.89 |
+09:23:43.6 |
HIP 55058 |
15.80 |
| 2026-04-12 00:00 |
11:17:08.28 |
+09:23:58.6 |
HIP 55058 |
15.41 |
| 2026-04-12 12:00 |
11:17:05.69 |
+09:24:13.5 |
HIP 55058 |
15.03 |
| 2026-04-13 00:00 |
11:17:03.12 |
+09:24:28.3 |
HIP 55058 |
14.69 |
| 2026-04-13 12:00 |
11:17:00.56 |
+09:24:42.9 |
HIP 55058 |
14.37 |
| 2026-04-14 00:00 |
11:16:58.02 |
+09:24:57.4 |
HIP 55058 |
14.07 |
| 2026-04-14 12:00 |
11:16:55.49 |
+09:25:11.7 |
HIP 55058 |
13.81 |
| 2026-04-15 00:00 |
11:16:52.99 |
+09:25:25.9 |
HIP 55058 |
13.57 |
| 2026-04-15 12:00 |
11:16:50.50 |
+09:25:39.9 |
HIP 55058 |
13.36 |
| 2026-04-16 00:00 |
11:16:48.03 |
+09:25:53.8 |
HIP 55058 |
13.18 |