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) |
| 2026-07-29 00:00 |
11:16:58.12 |
+09:15:43.3 |
HIP 55058 |
10.14 |
| 2026-07-29 12:00 |
11:17:00.61 |
+09:15:26.1 |
HIP 55058 |
10.74 |
| 2026-07-30 00:00 |
11:17:03.10 |
+09:15:08.8 |
HIP 55058 |
11.35 |
| 2026-07-30 12:00 |
11:17:05.62 |
+09:14:51.5 |
HIP 55058 |
11.98 |
| 2026-07-31 00:00 |
11:17:08.15 |
+09:14:34.0 |
HIP 55058 |
12.61 |
| 2026-07-31 12:00 |
11:17:10.70 |
+09:14:16.5 |
HIP 55058 |
13.26 |
| 2026-08-01 00:00 |
11:17:13.26 |
+09:13:58.9 |
HIP 55058 |
13.91 |
| 2026-08-01 12:00 |
11:17:15.84 |
+09:13:41.2 |
HIP 55058 |
14.57 |
| 2026-08-02 00:00 |
11:17:18.43 |
+09:13:23.5 |
HIP 55058 |
15.24 |
| 2026-08-02 12:00 |
11:17:21.04 |
+09:13:05.6 |
HIP 55058 |
15.91 |
| 2026-08-03 00:00 |
11:17:23.67 |
+09:12:47.8 |
HIP 55058 |
16.60 |
| 2026-08-03 12:00 |
11:17:26.31 |
+09:12:29.8 |
HIP 55058 |
17.29 |
| 2026-08-04 00:00 |
11:17:28.97 |
+09:12:11.8 |
HIP 55058 |
17.98 |
| 2026-08-04 12:00 |
11:17:31.64 |
+09:11:53.7 |
HIP 55058 |
18.68 |
| 2026-08-05 00:00 |
11:17:34.32 |
+09:11:35.5 |
HIP 55058 |
19.39 |
| 2026-08-05 12:00 |
11:17:37.02 |
+09:11:17.3 |
HIP 55058 |
20.10 |
| 2026-08-06 00:00 |
11:17:39.74 |
+09:10:59.0 |
HIP 55058 |
20.82 |
| 2026-08-06 12:00 |
11:17:42.46 |
+09:10:40.6 |
HIP 55058 |
21.54 |
| 2026-08-07 00:00 |
11:17:45.21 |
+09:10:22.2 |
HIP 55058 |
22.26 |
| 2026-08-07 12:00 |
11:17:47.96 |
+09:10:03.7 |
HIP 55058 |
23.00 |
| 2026-08-08 00:00 |
11:17:50.73 |
+09:09:45.2 |
HIP 55058 |
23.73 |
| 2026-08-08 12:00 |
11:17:53.52 |
+09:09:26.6 |
HIP 55058 |
24.47 |
| 2026-08-09 00:00 |
11:17:56.32 |
+09:09:07.9 |
HIP 55058 |
25.22 |
| 2026-08-09 12:00 |
11:17:59.13 |
+09:08:49.2 |
HIP 55058 |
25.96 |
| 2026-08-10 00:00 |
11:18:01.95 |
+09:08:30.5 |
HIP 55058 |
26.72 |
| 2026-08-10 12:00 |
11:18:04.79 |
+09:08:11.6 |
HIP 55058 |
27.47 |
| 2026-08-11 00:00 |
11:18:07.64 |
+09:07:52.8 |
HIP 55058 |
28.23 |
| 2026-08-11 12:00 |
11:18:10.50 |
+09:07:33.8 |
HIP 55058 |
29.00 |
| 2026-08-12 00:00 |
11:18:13.37 |
+09:07:14.9 |
HIP 55058 |
29.77 |
| 2026-08-12 12:00 |
11:18:16.26 |
+09:06:55.8 |
HIP 55058 |
30.54 |
| 2026-08-13 00:00 |
11:18:19.16 |
+09:06:36.8 |
HIP 55058 |
31.31 |
| 2026-08-13 12:00 |
11:18:22.07 |
+09:06:17.6 |
HIP 55058 |
32.09 |
| 2026-08-14 00:00 |
11:18:24.99 |
+09:05:58.5 |
HIP 55058 |
32.87 |
| 2026-08-14 12:00 |
11:18:27.92 |
+09:05:39.3 |
HIP 55058 |
33.66 |
| 2026-08-15 00:00 |
11:18:30.87 |
+09:05:20.0 |
HIP 55058 |
34.44 |
| 2026-08-15 12:00 |
11:18:33.82 |
+09:05:00.8 |
HIP 55058 |
35.24 |
| 2026-08-16 00:00 |
11:18:36.79 |
+09:04:41.4 |
HIP 55058 |
36.03 |
| 2026-08-16 12:00 |
11:18:39.77 |
+09:04:22.1 |
HIP 55058 |
36.83 |
| 2026-08-17 00:00 |
11:18:42.75 |
+09:04:02.7 |
HIP 55058 |
37.63 |
| 2026-08-17 12:00 |
11:18:45.75 |
+09:03:43.3 |
HIP 55058 |
38.43 |
| 2026-08-18 00:00 |
11:18:48.76 |
+09:03:23.8 |
HIP 55058 |
39.24 |
| 2026-08-18 12:00 |
11:18:51.77 |
+09:03:04.3 |
HIP 55058 |
40.04 |
| 2026-08-19 00:00 |
11:18:54.80 |
+09:02:44.8 |
HIP 55058 |
40.85 |