메타데이터
| 항목 |
값 |
| Designation |
C/2013 J6 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-04-09T13:32:09.997440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:35Z |
| Obs used |
129 |
| NEO |
- |
| M1 |
16.500 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-05-27.0000000 |
| e |
0.95963357 |
| q (au) |
2.415721 |
| a (au) |
59.844807 |
| i (deg) |
85.054919 |
| Ω (om, deg) |
68.421264 |
| ω (w, deg) |
125.644531 |
| M (ma, deg) |
0.100989 |
밝기
산란 + 전체 선형
$$
M_a = (15.883 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.883 |
| n |
2.000 |
| gf |
0.929 |
| gb |
-0.760 |
| k |
0.991 |
| δ90 |
7.236 |
| 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) |
| 2026-05-12 00:00 |
04:54:59.59 |
-60:56:08.6 |
HIP 22759 |
10.17 |
| 2026-05-12 12:00 |
04:55:07.48 |
-60:55:36.7 |
HIP 22759 |
10.84 |
| 2026-05-13 00:00 |
04:55:15.39 |
-60:55:05.2 |
HIP 22759 |
11.58 |
| 2026-05-13 12:00 |
04:55:23.33 |
-60:54:34.3 |
HIP 22759 |
12.38 |
| 2026-05-14 00:00 |
04:55:31.29 |
-60:54:03.8 |
HIP 22759 |
13.22 |
| 2026-05-14 12:00 |
04:55:39.28 |
-60:53:33.8 |
HIP 22759 |
14.11 |
| 2026-05-15 00:00 |
04:55:47.29 |
-60:53:04.3 |
HIP 22759 |
15.02 |
| 2026-05-15 12:00 |
04:55:55.32 |
-60:52:35.2 |
HIP 22759 |
15.96 |
| 2026-05-16 00:00 |
04:56:03.38 |
-60:52:06.6 |
HIP 22759 |
16.92 |
| 2026-05-16 12:00 |
04:56:11.45 |
-60:51:38.5 |
HIP 22759 |
17.90 |
| 2026-05-17 00:00 |
04:56:19.55 |
-60:51:10.9 |
HIP 22759 |
18.90 |
| 2026-05-17 12:00 |
04:56:27.67 |
-60:50:43.8 |
HIP 22759 |
19.90 |
| 2026-05-18 00:00 |
04:56:35.80 |
-60:50:17.1 |
HIP 22759 |
20.92 |
| 2026-05-18 12:00 |
04:56:43.96 |
-60:49:50.9 |
HIP 22759 |
21.95 |
| 2026-05-19 00:00 |
04:56:52.13 |
-60:49:25.2 |
HIP 23157 |
22.58 |
| 2026-05-19 12:00 |
04:57:00.33 |
-60:49:00.1 |
HIP 23157 |
22.26 |
| 2026-05-20 00:00 |
04:57:08.54 |
-60:48:35.3 |
HIP 23157 |
21.99 |
| 2026-05-20 12:00 |
04:57:16.76 |
-60:48:11.1 |
HIP 23157 |
21.75 |
| 2026-05-21 00:00 |
04:57:25.00 |
-60:47:47.4 |
HIP 23157 |
21.56 |
| 2026-05-21 12:00 |
04:57:33.26 |
-60:47:24.2 |
HIP 23157 |
21.41 |
| 2026-05-22 00:00 |
04:57:41.54 |
-60:47:01.4 |
HIP 23157 |
21.31 |
| 2026-05-22 12:00 |
04:57:49.83 |
-60:46:39.1 |
HIP 23157 |
21.26 |
| 2026-05-23 00:00 |
04:57:58.13 |
-60:46:17.4 |
HIP 23157 |
21.24 |
| 2026-05-23 12:00 |
04:58:06.45 |
-60:45:56.1 |
HIP 23157 |
21.28 |
| 2026-05-24 00:00 |
04:58:14.78 |
-60:45:35.3 |
HIP 23157 |
21.36 |
| 2026-05-24 12:00 |
04:58:23.12 |
-60:45:15.0 |
HIP 23157 |
21.48 |
| 2026-05-25 00:00 |
04:58:31.47 |
-60:44:55.2 |
HIP 23346 |
21.24 |
| 2026-05-25 12:00 |
04:58:39.84 |
-60:44:35.9 |
HIP 23346 |
20.17 |
| 2026-05-26 00:00 |
04:58:48.22 |
-60:44:17.1 |
HIP 23346 |
19.10 |
| 2026-05-26 12:00 |
04:58:56.61 |
-60:43:58.8 |
HIP 23346 |
18.03 |
| 2026-05-27 00:00 |
04:59:05.00 |
-60:43:41.0 |
HIP 23346 |
16.96 |
| 2026-05-27 12:00 |
04:59:13.41 |
-60:43:23.6 |
HIP 23346 |
15.89 |
| 2026-05-28 00:00 |
04:59:21.83 |
-60:43:06.8 |
HIP 23346 |
14.82 |
| 2026-05-28 12:00 |
04:59:30.26 |
-60:42:50.5 |
HIP 23346 |
13.76 |
| 2026-05-29 00:00 |
04:59:38.69 |
-60:42:34.6 |
HIP 23346 |
12.69 |
| 2026-05-29 12:00 |
04:59:47.14 |
-60:42:19.3 |
HIP 23346 |
11.63 |
| 2026-05-30 00:00 |
04:59:55.59 |
-60:42:04.4 |
HIP 23346 |
10.57 |
| 2026-05-30 12:00 |
05:00:04.05 |
-60:41:50.1 |
HIP 23346 |
9.51 |
| 2026-05-31 00:00 |
05:00:12.51 |
-60:41:36.2 |
HIP 23346 |
8.45 |
| 2026-05-31 12:00 |
05:00:20.98 |
-60:41:22.9 |
HIP 23346 |
7.40 |
| 2026-06-01 00:00 |
05:00:29.46 |
-60:41:10.0 |
HIP 23346 |
6.35 |
| 2026-06-01 12:00 |
05:00:37.94 |
-60:40:57.7 |
HIP 23346 |
5.31 |
| 2026-06-02 00:00 |
05:00:46.42 |
-60:40:45.8 |
HIP 23346 |
4.28 |