메타데이터
| 항목 |
값 |
| Designation |
459P/Catalina |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-01-28T07:40:35.670720Z |
| Orbit solution date (soln_date, UTC) |
2024-07-07T00:42:23Z |
| Obs used |
1061 |
| NEO |
- |
| M1 |
17.200 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2010-10-08T10:01:56.064000Z |
| Discovery magnitude (MPC) |
20.10 V |
| Discovery observatory (MPC) |
691 · Steward Observatory, Kitt Peak-Spacewatch |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-12-21.0000000 |
| e |
0.52243972 |
| q (au) |
1.600719 |
| a (au) |
3.351867 |
| i (deg) |
13.708393 |
| Ω (om, deg) |
272.043349 |
| ω (w, deg) |
189.881941 |
| M (ma, deg) |
111.091091 |
밝기
산란 + 전체 선형
$$
M_a = (15.932 + 2.395\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.932 |
| n |
2.395 |
| gf |
1.000 |
| gb |
-0.887 |
| k |
0.999 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
20:00:10.02 |
-16:23:07.3 |
HIP 98555 |
18.53 |
| 2026-05-12 12:00 |
20:00:07.59 |
-16:22:37.7 |
HIP 98555 |
19.30 |
| 2026-05-13 00:00 |
20:00:04.94 |
-16:22:08.7 |
HIP 98555 |
20.09 |
| 2026-05-13 12:00 |
20:00:02.09 |
-16:21:40.3 |
HIP 98555 |
20.92 |
| 2026-05-14 00:00 |
19:59:59.03 |
-16:21:12.5 |
HIP 98555 |
21.79 |
| 2026-05-14 12:00 |
19:59:55.75 |
-16:20:45.3 |
HIP 98555 |
22.69 |
| 2026-05-15 00:00 |
19:59:52.26 |
-16:20:18.7 |
HIP 98555 |
23.63 |
| 2026-05-15 12:00 |
19:59:48.56 |
-16:19:52.6 |
HIP 98555 |
24.61 |
| 2026-05-16 00:00 |
19:59:44.65 |
-16:19:27.2 |
HIP 98555 |
25.62 |
| 2026-05-16 12:00 |
19:59:40.52 |
-16:19:02.4 |
HIP 98555 |
26.67 |
| 2026-05-17 00:00 |
19:59:36.18 |
-16:18:38.2 |
HIP 98555 |
27.76 |
| 2026-05-17 12:00 |
19:59:31.63 |
-16:18:14.6 |
HIP 98286 |
27.76 |
| 2026-05-18 00:00 |
19:59:26.87 |
-16:17:51.6 |
HIP 98286 |
26.70 |
| 2026-05-18 12:00 |
19:59:21.90 |
-16:17:29.2 |
HIP 98286 |
25.62 |
| 2026-05-19 00:00 |
19:59:16.71 |
-16:17:07.4 |
HIP 98286 |
24.54 |
| 2026-05-19 12:00 |
19:59:11.32 |
-16:16:46.2 |
HIP 98286 |
23.46 |
| 2026-05-20 00:00 |
19:59:05.71 |
-16:16:25.6 |
HIP 98286 |
22.38 |
| 2026-05-20 12:00 |
19:58:59.89 |
-16:16:05.7 |
HIP 98286 |
21.32 |
| 2026-05-21 00:00 |
19:58:53.86 |
-16:15:46.4 |
HIP 98286 |
20.29 |
| 2026-05-21 12:00 |
19:58:47.61 |
-16:15:27.6 |
HIP 98286 |
19.31 |
| 2026-05-22 00:00 |
19:58:41.16 |
-16:15:09.5 |
HIP 98286 |
18.39 |
| 2026-05-22 12:00 |
19:58:34.50 |
-16:14:52.1 |
HIP 98286 |
17.56 |
| 2026-05-23 00:00 |
19:58:27.63 |
-16:14:35.2 |
HIP 98286 |
16.85 |
| 2026-05-23 12:00 |
19:58:20.55 |
-16:14:18.9 |
HIP 98286 |
16.28 |
| 2026-05-24 00:00 |
19:58:13.26 |
-16:14:03.3 |
HIP 98286 |
15.88 |
| 2026-05-24 12:00 |
19:58:05.76 |
-16:13:48.3 |
HIP 98286 |
15.70 |
| 2026-05-25 00:00 |
19:57:58.06 |
-16:13:33.9 |
HIP 98286 |
15.74 |
| 2026-05-25 12:00 |
19:57:50.15 |
-16:13:20.1 |
HIP 98286 |
16.03 |
| 2026-05-26 00:00 |
19:57:42.03 |
-16:13:06.9 |
HIP 98286 |
16.56 |
| 2026-05-26 12:00 |
19:57:33.70 |
-16:12:54.3 |
HIP 98286 |
17.34 |
| 2026-05-27 00:00 |
19:57:25.17 |
-16:12:42.4 |
HIP 98113 |
17.83 |
| 2026-05-27 12:00 |
19:57:16.43 |
-16:12:31.0 |
HIP 98113 |
16.22 |
| 2026-05-28 00:00 |
19:57:07.49 |
-16:12:20.3 |
HIP 98113 |
14.69 |
| 2026-05-28 12:00 |
19:56:58.34 |
-16:12:10.2 |
HIP 98113 |
13.29 |
| 2026-05-29 00:00 |
19:56:48.99 |
-16:12:00.7 |
HIP 98113 |
12.10 |
| 2026-05-29 12:00 |
19:56:39.44 |
-16:11:51.8 |
HIP 98113 |
11.21 |
| 2026-05-30 00:00 |
19:56:29.68 |
-16:11:43.6 |
HIP 98113 |
10.73 |
| 2026-05-30 12:00 |
19:56:19.72 |
-16:11:35.9 |
HIP 98113 |
10.74 |
| 2026-05-31 00:00 |
19:56:09.56 |
-16:11:28.9 |
HIP 98113 |
11.28 |
| 2026-05-31 12:00 |
19:55:59.20 |
-16:11:22.4 |
HIP 98113 |
12.30 |
| 2026-06-01 00:00 |
19:55:48.64 |
-16:11:16.6 |
HIP 98113 |
13.72 |
| 2026-06-01 12:00 |
19:55:37.88 |
-16:11:11.4 |
HIP 98113 |
15.45 |
| 2026-06-02 00:00 |
19:55:26.92 |
-16:11:06.8 |
HIP 98113 |
17.43 |