메타데이터
| 항목 |
값 |
| Designation |
C/2013 G5 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-09-01T12:06:25.499520Z |
| Orbit solution date (soln_date, UTC) |
2022-06-07T21:44:04Z |
| Obs used |
114 |
| NEO |
- |
| M1 |
14.300 |
| K1 |
11.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-04-23.0000000 |
| e |
0.99971461 |
| q (au) |
0.928919 |
| a (au) |
3254.937233 |
| i (deg) |
40.613476 |
| Ω (om, deg) |
144.282160 |
| ω (w, deg) |
165.667285 |
| M (ma, deg) |
359.999302 |
밝기
산란 + 전체 선형
$$
M_a = (15.455 + 2.768\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.455 |
| n |
2.768 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.000 |
| 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 |
07:33:10.88 |
+00:14:40.5 |
HIP 36730 |
4.87 |
| 2026-06-01 12:00 |
07:33:13.89 |
+00:14:49.2 |
HIP 36730 |
4.96 |
| 2026-06-02 00:00 |
07:33:16.93 |
+00:14:57.6 |
HIP 36730 |
5.17 |
| 2026-06-02 12:00 |
07:33:19.98 |
+00:15:05.9 |
HIP 36730 |
5.47 |
| 2026-06-03 00:00 |
07:33:23.05 |
+00:15:14.0 |
HIP 36730 |
5.86 |
| 2026-06-03 12:00 |
07:33:26.15 |
+00:15:21.9 |
HIP 36730 |
6.33 |
| 2026-06-04 00:00 |
07:33:29.26 |
+00:15:29.6 |
HIP 36730 |
6.85 |
| 2026-06-04 12:00 |
07:33:32.39 |
+00:15:37.2 |
HIP 36730 |
7.42 |
| 2026-06-05 00:00 |
07:33:35.53 |
+00:15:44.5 |
HIP 36730 |
8.03 |
| 2026-06-05 12:00 |
07:33:38.70 |
+00:15:51.7 |
HIP 36730 |
8.67 |
| 2026-06-06 00:00 |
07:33:41.88 |
+00:15:58.7 |
HIP 36730 |
9.34 |
| 2026-06-06 12:00 |
07:33:45.08 |
+00:16:05.4 |
HIP 36730 |
10.03 |
| 2026-06-07 00:00 |
07:33:48.30 |
+00:16:12.0 |
HIP 36730 |
10.73 |
| 2026-06-07 12:00 |
07:33:51.54 |
+00:16:18.5 |
HIP 36730 |
11.45 |
| 2026-06-08 00:00 |
07:33:54.79 |
+00:16:24.7 |
HIP 36730 |
12.19 |
| 2026-06-08 12:00 |
07:33:58.06 |
+00:16:30.7 |
HIP 36852 |
11.64 |
| 2026-06-09 00:00 |
07:34:01.35 |
+00:16:36.5 |
HIP 36852 |
11.00 |
| 2026-06-09 12:00 |
07:34:04.65 |
+00:16:42.2 |
HIP 36852 |
10.38 |
| 2026-06-10 00:00 |
07:34:07.97 |
+00:16:47.7 |
HIP 36852 |
9.79 |
| 2026-06-10 12:00 |
07:34:11.30 |
+00:16:52.9 |
HIP 36852 |
9.23 |
| 2026-06-11 00:00 |
07:34:14.66 |
+00:16:58.0 |
HIP 36852 |
8.71 |
| 2026-06-11 12:00 |
07:34:18.02 |
+00:17:02.9 |
HIP 36852 |
8.24 |
| 2026-06-12 00:00 |
07:34:21.41 |
+00:17:07.6 |
HIP 36852 |
7.83 |
| 2026-06-12 12:00 |
07:34:24.80 |
+00:17:12.1 |
HIP 36852 |
7.49 |
| 2026-06-13 00:00 |
07:34:28.22 |
+00:17:16.4 |
HIP 36852 |
7.22 |
| 2026-06-13 12:00 |
07:34:31.64 |
+00:17:20.5 |
HIP 36852 |
7.05 |
| 2026-06-14 00:00 |
07:34:35.08 |
+00:17:24.5 |
HIP 36852 |
6.98 |
| 2026-06-14 12:00 |
07:34:38.54 |
+00:17:28.2 |
HIP 36852 |
7.01 |
| 2026-06-15 00:00 |
07:34:42.01 |
+00:17:31.7 |
HIP 36852 |
7.14 |
| 2026-06-15 12:00 |
07:34:45.49 |
+00:17:35.1 |
HIP 36852 |
7.37 |
| 2026-06-16 00:00 |
07:34:48.99 |
+00:17:38.3 |
HIP 36852 |
7.70 |
| 2026-06-16 12:00 |
07:34:52.50 |
+00:17:41.2 |
HIP 36852 |
8.10 |
| 2026-06-17 00:00 |
07:34:56.03 |
+00:17:44.0 |
HIP 36852 |
8.57 |
| 2026-06-17 12:00 |
07:34:59.56 |
+00:17:46.6 |
HIP 36852 |
9.11 |
| 2026-06-18 00:00 |
07:35:03.11 |
+00:17:49.0 |
HIP 36852 |
9.69 |
| 2026-06-18 12:00 |
07:35:06.67 |
+00:17:51.2 |
HIP 36852 |
10.32 |
| 2026-06-19 00:00 |
07:35:10.24 |
+00:17:53.2 |
HIP 36852 |
10.99 |
| 2026-06-19 12:00 |
07:35:13.83 |
+00:17:55.0 |
HIP 36852 |
11.68 |
| 2026-06-20 00:00 |
07:35:17.43 |
+00:17:56.7 |
HIP 36852 |
12.40 |
| 2026-06-20 12:00 |
07:35:21.03 |
+00:17:58.1 |
HIP 36852 |
13.15 |
| 2026-06-21 00:00 |
07:35:24.65 |
+00:17:59.3 |
HIP 36852 |
13.91 |
| 2026-06-21 12:00 |
07:35:28.28 |
+00:18:00.4 |
HIP 36852 |
14.69 |
| 2026-06-22 00:00 |
07:35:31.92 |
+00:18:01.3 |
HIP 36909 |
15.18 |