메타데이터
| 항목 |
값 |
| Designation |
C/2013 L2 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-05-11T04:41:32.150400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:37Z |
| Obs used |
242 |
| NEO |
- |
| M1 |
12.300 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-06-27.0000000 |
| e |
1.00092750 |
| q (au) |
4.872285 |
| a (au) |
-5253.163467 |
| i (deg) |
106.776427 |
| Ω (om, deg) |
285.877705 |
| ω (w, deg) |
1.941215 |
| M (ma, deg) |
0.001066 |
밝기
산란 + 전체 선형
$$
M_a = (10.956 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.956 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.501 |
| k |
1.000 |
| 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 |
09:29:20.98 |
+63:06:57.2 |
HIP 46733 |
15.13 |
| 2026-03-26 12:00 |
09:29:13.93 |
+63:06:28.6 |
HIP 46733 |
15.82 |
| 2026-03-27 00:00 |
09:29:06.94 |
+63:05:59.6 |
HIP 46733 |
16.53 |
| 2026-03-27 12:00 |
09:29:00.02 |
+63:05:30.3 |
HIP 46733 |
17.25 |
| 2026-03-28 00:00 |
09:28:53.16 |
+63:05:00.6 |
HIP 46733 |
17.98 |
| 2026-03-28 12:00 |
09:28:46.37 |
+63:04:30.5 |
HIP 46733 |
18.72 |
| 2026-03-29 00:00 |
09:28:39.64 |
+63:04:00.1 |
HIP 46733 |
19.47 |
| 2026-03-29 12:00 |
09:28:32.97 |
+63:03:29.3 |
HIP 46733 |
20.23 |
| 2026-03-30 00:00 |
09:28:26.37 |
+63:02:58.2 |
HIP 46733 |
20.99 |
| 2026-03-30 12:00 |
09:28:19.83 |
+63:02:26.7 |
HIP 46733 |
21.76 |
| 2026-03-31 00:00 |
09:28:13.36 |
+63:01:54.9 |
HIP 46733 |
22.53 |
| 2026-03-31 12:00 |
09:28:06.95 |
+63:01:22.7 |
HIP 46733 |
23.31 |
| 2026-04-01 00:00 |
09:28:00.61 |
+63:00:50.2 |
HIP 46733 |
24.08 |
| 2026-04-01 12:00 |
09:27:54.33 |
+63:00:17.4 |
HIP 46733 |
24.86 |
| 2026-04-02 00:00 |
09:27:48.13 |
+62:59:44.2 |
HIP 46733 |
25.64 |
| 2026-04-02 12:00 |
09:27:41.99 |
+62:59:10.7 |
HIP 46733 |
26.43 |
| 2026-04-03 00:00 |
09:27:35.91 |
+62:58:36.8 |
HIP 46733 |
27.21 |
| 2026-04-03 12:00 |
09:27:29.91 |
+62:58:02.6 |
HIP 46733 |
27.99 |
| 2026-04-04 00:00 |
09:27:23.97 |
+62:57:28.1 |
HIP 46733 |
28.78 |
| 2026-04-04 12:00 |
09:27:18.10 |
+62:56:53.3 |
HIP 46059 |
28.97 |
| 2026-04-05 00:00 |
09:27:12.30 |
+62:56:18.2 |
HIP 46059 |
28.67 |
| 2026-04-05 12:00 |
09:27:06.56 |
+62:55:42.7 |
HIP 46059 |
28.42 |
| 2026-04-06 00:00 |
09:27:00.90 |
+62:55:07.0 |
HIP 46059 |
28.19 |
| 2026-04-06 12:00 |
09:26:55.30 |
+62:54:30.9 |
HIP 46059 |
28.00 |
| 2026-04-07 00:00 |
09:26:49.78 |
+62:53:54.5 |
HIP 46059 |
27.85 |
| 2026-04-07 12:00 |
09:26:44.32 |
+62:53:17.8 |
HIP 46059 |
27.73 |
| 2026-04-08 00:00 |
09:26:38.94 |
+62:52:40.9 |
HIP 46059 |
27.65 |
| 2026-04-08 12:00 |
09:26:33.63 |
+62:52:03.6 |
HIP 46059 |
27.60 |
| 2026-04-09 00:00 |
09:26:28.38 |
+62:51:26.0 |
HIP 46059 |
27.59 |
| 2026-04-09 12:00 |
09:26:23.21 |
+62:50:48.1 |
HIP 46144 |
27.36 |
| 2026-04-10 00:00 |
09:26:18.11 |
+62:50:10.0 |
HIP 46144 |
26.53 |
| 2026-04-10 12:00 |
09:26:13.07 |
+62:49:31.6 |
HIP 46144 |
25.70 |
| 2026-04-11 00:00 |
09:26:08.12 |
+62:48:52.8 |
HIP 46144 |
24.88 |
| 2026-04-11 12:00 |
09:26:03.23 |
+62:48:13.9 |
HIP 46144 |
24.06 |
| 2026-04-12 00:00 |
09:25:58.41 |
+62:47:34.6 |
HIP 46144 |
23.23 |
| 2026-04-12 12:00 |
09:25:53.67 |
+62:46:55.0 |
HIP 46144 |
22.41 |
| 2026-04-13 00:00 |
09:25:49.00 |
+62:46:15.2 |
HIP 46144 |
21.59 |
| 2026-04-13 12:00 |
09:25:44.40 |
+62:45:35.2 |
HIP 46144 |
20.78 |
| 2026-04-14 00:00 |
09:25:39.88 |
+62:44:54.8 |
HIP 46144 |
19.96 |
| 2026-04-14 12:00 |
09:25:35.42 |
+62:44:14.2 |
HIP 46144 |
19.15 |
| 2026-04-15 00:00 |
09:25:31.05 |
+62:43:33.4 |
HIP 46144 |
18.34 |
| 2026-04-15 12:00 |
09:25:26.74 |
+62:42:52.3 |
HIP 46144 |
17.53 |
| 2026-04-16 00:00 |
09:25:22.51 |
+62:42:11.0 |
HIP 46144 |
16.72 |