메타데이터
| 항목 |
값 |
| Designation |
P/2012 C3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-10-05T09:58:58.944000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:02Z |
| Obs used |
20 |
| NEO |
- |
| M1 |
13.500 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-02-17.0000000 |
| e |
0.62652717 |
| q (au) |
3.624891 |
| a (au) |
9.705904 |
| i (deg) |
9.189868 |
| Ω (om, deg) |
135.441268 |
| ω (w, deg) |
344.851612 |
| M (ma, deg) |
4.386758 |
밝기
산란 + 전체 선형
$$
M_a = (15.290 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.290 |
| n |
2.000 |
| gf |
0.997 |
| gb |
-0.823 |
| 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) |
| 2026-05-12 00:00 |
20:15:01.71 |
-17:20:05.6 |
HIP 99710 |
25.27 |
| 2026-05-12 12:00 |
20:15:00.43 |
-17:20:08.0 |
HIP 99710 |
25.06 |
| 2026-05-13 00:00 |
20:14:59.09 |
-17:20:10.6 |
HIP 99710 |
24.84 |
| 2026-05-13 12:00 |
20:14:57.68 |
-17:20:13.4 |
HIP 99710 |
24.61 |
| 2026-05-14 00:00 |
20:14:56.21 |
-17:20:16.4 |
HIP 99710 |
24.37 |
| 2026-05-14 12:00 |
20:14:54.68 |
-17:20:19.6 |
HIP 99710 |
24.12 |
| 2026-05-15 00:00 |
20:14:53.09 |
-17:20:23.1 |
HIP 99710 |
23.87 |
| 2026-05-15 12:00 |
20:14:51.43 |
-17:20:26.8 |
HIP 99710 |
23.61 |
| 2026-05-16 00:00 |
20:14:49.71 |
-17:20:30.7 |
HIP 99710 |
23.34 |
| 2026-05-16 12:00 |
20:14:47.92 |
-17:20:34.8 |
HIP 99710 |
23.07 |
| 2026-05-17 00:00 |
20:14:46.08 |
-17:20:39.2 |
HIP 99710 |
22.79 |
| 2026-05-17 12:00 |
20:14:44.17 |
-17:20:43.7 |
HIP 99710 |
22.50 |
| 2026-05-18 00:00 |
20:14:42.20 |
-17:20:48.5 |
HIP 99710 |
22.21 |
| 2026-05-18 12:00 |
20:14:40.16 |
-17:20:53.5 |
HIP 99710 |
21.92 |
| 2026-05-19 00:00 |
20:14:38.07 |
-17:20:58.7 |
HIP 99710 |
21.63 |
| 2026-05-19 12:00 |
20:14:35.91 |
-17:21:04.1 |
HIP 99710 |
21.33 |
| 2026-05-20 00:00 |
20:14:33.70 |
-17:21:09.7 |
HIP 99710 |
21.04 |
| 2026-05-20 12:00 |
20:14:31.42 |
-17:21:15.5 |
HIP 99710 |
20.74 |
| 2026-05-21 00:00 |
20:14:29.08 |
-17:21:21.6 |
HIP 99710 |
20.45 |
| 2026-05-21 12:00 |
20:14:26.68 |
-17:21:27.9 |
HIP 99710 |
20.16 |
| 2026-05-22 00:00 |
20:14:24.22 |
-17:21:34.3 |
HIP 99710 |
19.88 |
| 2026-05-22 12:00 |
20:14:21.70 |
-17:21:41.0 |
HIP 99710 |
19.60 |
| 2026-05-23 00:00 |
20:14:19.12 |
-17:21:47.9 |
HIP 99710 |
19.34 |
| 2026-05-23 12:00 |
20:14:16.49 |
-17:21:55.0 |
HIP 99710 |
19.08 |
| 2026-05-24 00:00 |
20:14:13.79 |
-17:22:02.4 |
HIP 99710 |
18.83 |
| 2026-05-24 12:00 |
20:14:11.03 |
-17:22:09.9 |
HIP 99710 |
18.60 |
| 2026-05-25 00:00 |
20:14:08.22 |
-17:22:17.6 |
HIP 99710 |
18.39 |
| 2026-05-25 12:00 |
20:14:05.34 |
-17:22:25.6 |
HIP 99710 |
18.19 |
| 2026-05-26 00:00 |
20:14:02.41 |
-17:22:33.7 |
HIP 99710 |
18.02 |
| 2026-05-26 12:00 |
20:13:59.42 |
-17:22:42.1 |
HIP 99710 |
17.87 |
| 2026-05-27 00:00 |
20:13:56.37 |
-17:22:50.6 |
HIP 99710 |
17.74 |
| 2026-05-27 12:00 |
20:13:53.27 |
-17:22:59.4 |
HIP 99710 |
17.64 |
| 2026-05-28 00:00 |
20:13:50.11 |
-17:23:08.3 |
HIP 99710 |
17.58 |
| 2026-05-28 12:00 |
20:13:46.89 |
-17:23:17.5 |
HIP 99710 |
17.54 |
| 2026-05-29 00:00 |
20:13:43.61 |
-17:23:26.9 |
HIP 99710 |
17.54 |
| 2026-05-29 12:00 |
20:13:40.28 |
-17:23:36.4 |
HIP 99710 |
17.58 |
| 2026-05-30 00:00 |
20:13:36.89 |
-17:23:46.2 |
HIP 99710 |
17.65 |
| 2026-05-30 12:00 |
20:13:33.45 |
-17:23:56.2 |
HIP 99710 |
17.76 |
| 2026-05-31 00:00 |
20:13:29.95 |
-17:24:06.3 |
HIP 99710 |
17.92 |
| 2026-05-31 12:00 |
20:13:26.40 |
-17:24:16.7 |
HIP 99710 |
18.11 |
| 2026-06-01 00:00 |
20:13:22.79 |
-17:24:27.3 |
HIP 99710 |
18.35 |
| 2026-06-01 12:00 |
20:13:19.13 |
-17:24:38.0 |
HIP 99710 |
18.63 |
| 2026-06-02 00:00 |
20:13:15.41 |
-17:24:49.0 |
HIP 99710 |
18.95 |