메타데이터
| 항목 |
값 |
| Designation |
P/2012 F2 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-04-10T00:22:20.953920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:05Z |
| Obs used |
100 |
| NEO |
- |
| M1 |
12.000 |
| K1 |
8.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-12-31.0000000 |
| e |
0.54223975 |
| q (au) |
2.897068 |
| a (au) |
6.328788 |
| i (deg) |
14.724691 |
| Ω (om, deg) |
227.135164 |
| ω (w, deg) |
33.192840 |
| M (ma, deg) |
353.808575 |
밝기
산란 + 전체 선형
$$
M_a = (10.540 + 3.608\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.540 |
| n |
3.608 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-06-01 00:00 |
08:21:46.93 |
+05:26:00.0 |
HIP 40892 |
21.93 |
| 2026-06-01 12:00 |
08:22:01.29 |
+05:25:55.1 |
HIP 40892 |
24.65 |
| 2026-06-02 00:00 |
08:22:15.73 |
+05:25:49.5 |
HIP 41032 |
25.02 |
| 2026-06-02 12:00 |
08:22:30.27 |
+05:25:43.2 |
HIP 41032 |
24.77 |
| 2026-06-03 00:00 |
08:22:44.89 |
+05:25:36.3 |
HIP 41032 |
25.03 |
| 2026-06-03 12:00 |
08:22:59.60 |
+05:25:28.6 |
HIP 41032 |
25.81 |
| 2026-06-04 00:00 |
08:23:14.40 |
+05:25:20.3 |
HIP 41240 |
25.01 |
| 2026-06-04 12:00 |
08:23:29.28 |
+05:25:11.2 |
HIP 41240 |
21.34 |
| 2026-06-05 00:00 |
08:23:44.25 |
+05:25:01.5 |
HIP 41240 |
17.67 |
| 2026-06-05 12:00 |
08:23:59.30 |
+05:24:51.1 |
HIP 41240 |
14.00 |
| 2026-06-06 00:00 |
08:24:14.43 |
+05:24:40.0 |
HIP 41240 |
10.36 |
| 2026-06-06 12:00 |
08:24:29.64 |
+05:24:28.2 |
HIP 41240 |
6.84 |
| 2026-06-07 00:00 |
08:24:44.94 |
+05:24:15.7 |
HIP 41240 |
3.85 |
| 2026-06-07 12:00 |
08:25:00.32 |
+05:24:02.6 |
HIP 41240 |
3.46 |
| 2026-06-08 00:00 |
08:25:15.78 |
+05:23:48.7 |
HIP 41240 |
6.22 |
| 2026-06-08 12:00 |
08:25:31.32 |
+05:23:34.1 |
HIP 41240 |
9.77 |
| 2026-06-09 00:00 |
08:25:46.94 |
+05:23:18.9 |
HIP 41240 |
13.52 |
| 2026-06-09 12:00 |
08:26:02.64 |
+05:23:03.0 |
HIP 41240 |
17.35 |
| 2026-06-10 00:00 |
08:26:18.42 |
+05:22:46.3 |
HIP 41240 |
21.23 |
| 2026-06-10 12:00 |
08:26:34.27 |
+05:22:29.0 |
HIP 41240 |
25.15 |
| 2026-06-11 00:00 |
08:26:50.21 |
+05:22:11.0 |
HIP 41240 |
29.10 |
| 2026-06-11 12:00 |
08:27:06.21 |
+05:21:52.3 |
HIP 41240 |
33.07 |
| 2026-06-12 00:00 |
08:27:22.30 |
+05:21:32.9 |
HIP 41509 |
33.35 |
| 2026-06-12 12:00 |
08:27:38.46 |
+05:21:12.8 |
HIP 41509 |
32.23 |
| 2026-06-13 00:00 |
08:27:54.69 |
+05:20:52.1 |
HIP 41509 |
31.58 |
| 2026-06-13 12:00 |
08:28:11.00 |
+05:20:30.6 |
HIP 41699 |
29.50 |
| 2026-06-14 00:00 |
08:28:27.38 |
+05:20:08.4 |
HIP 41699 |
25.47 |
| 2026-06-14 12:00 |
08:28:43.84 |
+05:19:45.6 |
HIP 41699 |
21.44 |
| 2026-06-15 00:00 |
08:29:00.36 |
+05:19:22.1 |
HIP 41699 |
17.43 |
| 2026-06-15 12:00 |
08:29:16.96 |
+05:18:57.8 |
HIP 41699 |
13.48 |
| 2026-06-16 00:00 |
08:29:33.63 |
+05:18:32.9 |
HIP 41699 |
9.67 |
| 2026-06-16 12:00 |
08:29:50.36 |
+05:18:07.3 |
HIP 41699 |
6.32 |
| 2026-06-17 00:00 |
08:30:07.17 |
+05:17:41.0 |
HIP 41699 |
4.62 |
| 2026-06-17 12:00 |
08:30:24.04 |
+05:17:14.0 |
HIP 41699 |
6.18 |
| 2026-06-18 00:00 |
08:30:40.98 |
+05:16:46.4 |
HIP 41699 |
9.54 |
| 2026-06-18 12:00 |
08:30:57.99 |
+05:16:18.0 |
HIP 41699 |
13.42 |
| 2026-06-19 00:00 |
08:31:15.06 |
+05:15:49.0 |
HIP 41699 |
17.49 |
| 2026-06-19 12:00 |
08:31:32.20 |
+05:15:19.3 |
HIP 41699 |
21.66 |
| 2026-06-20 00:00 |
08:31:49.40 |
+05:14:48.9 |
HIP 41699 |
25.88 |
| 2026-06-20 12:00 |
08:32:06.66 |
+05:14:17.9 |
HIP 41898 |
29.74 |
| 2026-06-21 00:00 |
08:32:23.99 |
+05:13:46.1 |
HIP 41898 |
29.47 |
| 2026-06-21 12:00 |
08:32:41.38 |
+05:13:13.7 |
HIP 41898 |
29.84 |
| 2026-06-22 00:00 |
08:32:58.83 |
+05:12:40.6 |
HIP 42076 |
29.33 |