메타데이터
| 항목 |
값 |
| Designation |
C/2012 E3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-05-12T22:05:22.326720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:05Z |
| Obs used |
74 |
| NEO |
- |
| M1 |
9.900 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-03-29.0000000 |
| e |
0.98271491 |
| q (au) |
3.827319 |
| a (au) |
221.423057 |
| i (deg) |
105.658608 |
| Ω (om, deg) |
5.530998 |
| ω (w, deg) |
103.515422 |
| M (ma, deg) |
0.096047 |
밝기
산란 + 전체 선형
$$
M_a = (11.441 + 2.856\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.441 |
| n |
2.856 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.976 |
| 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 |
08:39:04.92 |
-44:14:30.3 |
HIP 42340 |
19.14 |
| 2026-06-01 12:00 |
08:39:07.30 |
-44:13:53.3 |
HIP 42340 |
19.89 |
| 2026-06-02 00:00 |
08:39:09.71 |
-44:13:16.5 |
HIP 42340 |
20.64 |
| 2026-06-02 12:00 |
08:39:12.16 |
-44:12:40.1 |
HIP 42340 |
21.39 |
| 2026-06-03 00:00 |
08:39:14.64 |
-44:12:03.9 |
HIP 42492 |
21.16 |
| 2026-06-03 12:00 |
08:39:17.15 |
-44:11:28.1 |
HIP 42492 |
20.47 |
| 2026-06-04 00:00 |
08:39:19.70 |
-44:10:52.5 |
HIP 42492 |
19.78 |
| 2026-06-04 12:00 |
08:39:22.28 |
-44:10:17.3 |
HIP 42492 |
19.11 |
| 2026-06-05 00:00 |
08:39:24.89 |
-44:09:42.4 |
HIP 42492 |
18.44 |
| 2026-06-05 12:00 |
08:39:27.54 |
-44:09:07.8 |
HIP 42492 |
17.78 |
| 2026-06-06 00:00 |
08:39:30.22 |
-44:08:33.5 |
HIP 42492 |
17.13 |
| 2026-06-06 12:00 |
08:39:32.94 |
-44:07:59.5 |
HIP 42492 |
16.50 |
| 2026-06-07 00:00 |
08:39:35.68 |
-44:07:25.8 |
HIP 42492 |
15.88 |
| 2026-06-07 12:00 |
08:39:38.46 |
-44:06:52.5 |
HIP 42492 |
15.28 |
| 2026-06-08 00:00 |
08:39:41.27 |
-44:06:19.5 |
HIP 42492 |
14.69 |
| 2026-06-08 12:00 |
08:39:44.11 |
-44:05:46.8 |
HIP 42492 |
14.13 |
| 2026-06-09 00:00 |
08:39:46.99 |
-44:05:14.4 |
HIP 42492 |
13.59 |
| 2026-06-09 12:00 |
08:39:49.89 |
-44:04:42.4 |
HIP 42492 |
13.07 |
| 2026-06-10 00:00 |
08:39:52.83 |
-44:04:10.7 |
HIP 42492 |
12.59 |
| 2026-06-10 12:00 |
08:39:55.80 |
-44:03:39.3 |
HIP 42492 |
12.14 |
| 2026-06-11 00:00 |
08:39:58.80 |
-44:03:08.3 |
HIP 42492 |
11.72 |
| 2026-06-11 12:00 |
08:40:01.83 |
-44:02:37.6 |
HIP 42492 |
11.35 |
| 2026-06-12 00:00 |
08:40:04.89 |
-44:02:07.2 |
HIP 42492 |
11.02 |
| 2026-06-12 12:00 |
08:40:07.98 |
-44:01:37.2 |
HIP 42492 |
10.74 |
| 2026-06-13 00:00 |
08:40:11.10 |
-44:01:07.6 |
HIP 42492 |
10.51 |
| 2026-06-13 12:00 |
08:40:14.24 |
-44:00:38.2 |
HIP 42492 |
10.34 |
| 2026-06-14 00:00 |
08:40:17.42 |
-44:00:09.3 |
HIP 42492 |
10.24 |
| 2026-06-14 12:00 |
08:40:20.63 |
-43:59:40.7 |
HIP 42492 |
10.19 |
| 2026-06-15 00:00 |
08:40:23.86 |
-43:59:12.4 |
HIP 42492 |
10.20 |
| 2026-06-15 12:00 |
08:40:27.13 |
-43:58:44.5 |
HIP 42492 |
10.28 |
| 2026-06-16 00:00 |
08:40:30.42 |
-43:58:17.0 |
HIP 42492 |
10.42 |
| 2026-06-16 12:00 |
08:40:33.74 |
-43:57:49.8 |
HIP 42492 |
10.62 |
| 2026-06-17 00:00 |
08:40:37.08 |
-43:57:23.0 |
HIP 42492 |
10.88 |
| 2026-06-17 12:00 |
08:40:40.46 |
-43:56:56.5 |
HIP 42492 |
11.18 |
| 2026-06-18 00:00 |
08:40:43.86 |
-43:56:30.4 |
HIP 42492 |
11.54 |
| 2026-06-18 12:00 |
08:40:47.28 |
-43:56:04.7 |
HIP 42492 |
11.93 |
| 2026-06-19 00:00 |
08:40:50.73 |
-43:55:39.3 |
HIP 42492 |
12.37 |
| 2026-06-19 12:00 |
08:40:54.21 |
-43:55:14.3 |
HIP 42492 |
12.84 |
| 2026-06-20 00:00 |
08:40:57.72 |
-43:54:49.7 |
HIP 42492 |
13.35 |
| 2026-06-20 12:00 |
08:41:01.25 |
-43:54:25.5 |
HIP 42492 |
13.88 |
| 2026-06-21 00:00 |
08:41:04.80 |
-43:54:01.6 |
HIP 42492 |
14.44 |
| 2026-06-21 12:00 |
08:41:08.38 |
-43:53:38.1 |
HIP 42492 |
15.02 |
| 2026-06-22 00:00 |
08:41:11.98 |
-43:53:15.0 |
HIP 42492 |
15.62 |