메타데이터
| 항목 |
값 |
| Designation |
C/2013 P2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-02-17T01:18:12.876480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:38Z |
| Obs used |
295 |
| NEO |
- |
| M1 |
14.700 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-02-23.0000000 |
| e |
0.99890182 |
| q (au) |
2.834925 |
| a (au) |
2581.478285 |
| i (deg) |
125.532159 |
| Ω (om, deg) |
2.028690 |
| ω (w, deg) |
104.973695 |
| M (ma, deg) |
0.000045 |
밝기
산란 + 전체 선형
$$
M_a = (13.539 + 2.416\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.539 |
| n |
2.416 |
| gf |
0.904 |
| gb |
-0.906 |
| k |
1.000 |
| 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) |
| 2026-09-20 00:00 |
07:54:57.38 |
-28:14:04.8 |
HIP 38615 |
10.46 |
| 2026-09-20 12:00 |
07:54:59.20 |
-28:14:51.3 |
HIP 38615 |
11.31 |
| 2026-09-21 00:00 |
07:55:00.97 |
-28:15:38.1 |
HIP 38615 |
12.15 |
| 2026-09-21 12:00 |
07:55:02.72 |
-28:16:24.9 |
HIP 38615 |
13.00 |
| 2026-09-22 00:00 |
07:55:04.42 |
-28:17:11.9 |
HIP 38615 |
13.85 |
| 2026-09-22 12:00 |
07:55:06.10 |
-28:17:59.1 |
HIP 38615 |
14.69 |
| 2026-09-23 00:00 |
07:55:07.74 |
-28:18:46.4 |
HIP 38615 |
15.54 |
| 2026-09-23 12:00 |
07:55:09.34 |
-28:19:33.8 |
HIP 38615 |
16.39 |
| 2026-09-24 00:00 |
07:55:10.91 |
-28:20:21.3 |
HIP 38615 |
17.23 |
| 2026-09-24 12:00 |
07:55:12.45 |
-28:21:09.0 |
HIP 38615 |
18.07 |
| 2026-09-25 00:00 |
07:55:13.95 |
-28:21:56.7 |
HIP 38741 |
17.99 |
| 2026-09-25 12:00 |
07:55:15.41 |
-28:22:44.6 |
HIP 38741 |
17.14 |
| 2026-09-26 00:00 |
07:55:16.84 |
-28:23:32.6 |
HIP 38741 |
16.29 |
| 2026-09-26 12:00 |
07:55:18.23 |
-28:24:20.8 |
HIP 38741 |
15.44 |
| 2026-09-27 00:00 |
07:55:19.59 |
-28:25:09.0 |
HIP 38741 |
14.59 |
| 2026-09-27 12:00 |
07:55:20.91 |
-28:25:57.3 |
HIP 38741 |
13.75 |
| 2026-09-28 00:00 |
07:55:22.19 |
-28:26:45.8 |
HIP 38741 |
12.91 |
| 2026-09-28 12:00 |
07:55:23.44 |
-28:27:34.3 |
HIP 38741 |
12.08 |
| 2026-09-29 00:00 |
07:55:24.65 |
-28:28:23.0 |
HIP 38741 |
11.25 |
| 2026-09-29 12:00 |
07:55:25.83 |
-28:29:11.7 |
HIP 38741 |
10.44 |
| 2026-09-30 00:00 |
07:55:26.97 |
-28:30:00.5 |
HIP 38741 |
9.63 |
| 2026-09-30 12:00 |
07:55:28.07 |
-28:30:49.5 |
HIP 38741 |
8.83 |
| 2026-10-01 00:00 |
07:55:29.13 |
-28:31:38.5 |
HIP 38741 |
8.05 |
| 2026-10-01 12:00 |
07:55:30.16 |
-28:32:27.6 |
HIP 38741 |
7.29 |
| 2026-10-02 00:00 |
07:55:31.15 |
-28:33:16.7 |
HIP 38741 |
6.55 |
| 2026-10-02 12:00 |
07:55:32.10 |
-28:34:06.0 |
HIP 38741 |
5.86 |
| 2026-10-03 00:00 |
07:55:33.01 |
-28:34:55.3 |
HIP 38741 |
5.21 |
| 2026-10-03 12:00 |
07:55:33.89 |
-28:35:44.7 |
HIP 38741 |
4.63 |
| 2026-10-04 00:00 |
07:55:34.72 |
-28:36:34.2 |
HIP 38741 |
4.16 |
| 2026-10-04 12:00 |
07:55:35.52 |
-28:37:23.7 |
HIP 38741 |
3.82 |
| 2026-10-05 00:00 |
07:55:36.28 |
-28:38:13.3 |
HIP 38741 |
3.66 |
| 2026-10-05 12:00 |
07:55:37.00 |
-28:39:02.9 |
HIP 38741 |
3.70 |
| 2026-10-06 00:00 |
07:55:37.69 |
-28:39:52.6 |
HIP 38741 |
3.93 |
| 2026-10-06 12:00 |
07:55:38.33 |
-28:40:42.3 |
HIP 38741 |
4.33 |
| 2026-10-07 00:00 |
07:55:38.94 |
-28:41:32.1 |
HIP 38741 |
4.84 |
| 2026-10-07 12:00 |
07:55:39.50 |
-28:42:22.0 |
HIP 38741 |
5.44 |
| 2026-10-08 00:00 |
07:55:40.03 |
-28:43:11.8 |
HIP 38741 |
6.10 |
| 2026-10-08 12:00 |
07:55:40.52 |
-28:44:01.8 |
HIP 38741 |
6.81 |
| 2026-10-09 00:00 |
07:55:40.96 |
-28:44:51.7 |
HIP 38741 |
7.55 |
| 2026-10-09 12:00 |
07:55:41.37 |
-28:45:41.7 |
HIP 38741 |
8.31 |
| 2026-10-10 00:00 |
07:55:41.74 |
-28:46:31.7 |
HIP 38741 |
9.08 |
| 2026-10-10 12:00 |
07:55:42.07 |
-28:47:21.7 |
HIP 38741 |
9.87 |
| 2026-10-11 00:00 |
07:55:42.35 |
-28:48:11.7 |
HIP 38741 |
10.67 |