메타데이터
| 항목 |
값 |
| Designation |
C/2013 P4 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-08-12T09:25:24.268800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:39Z |
| Obs used |
229 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
10.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-07-13.0000000 |
| e |
0.59605993 |
| q (au) |
5.967053 |
| a (au) |
14.772125 |
| i (deg) |
4.264367 |
| Ω (om, deg) |
256.614561 |
| ω (w, deg) |
113.559028 |
| M (ma, deg) |
359.472396 |
밝기
산란 + 전체 선형
$$
M_a = (2.500 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
2.500 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
09:48:43.03 |
+08:56:54.0 |
HIP 48146 |
2.95 |
| 2026-06-01 12:00 |
09:48:45.83 |
+08:56:45.9 |
HIP 48146 |
2.48 |
| 2026-06-02 00:00 |
09:48:48.69 |
+08:56:37.5 |
HIP 48146 |
2.15 |
| 2026-06-02 12:00 |
09:48:51.59 |
+08:56:28.9 |
HIP 48146 |
2.02 |
| 2026-06-03 00:00 |
09:48:54.54 |
+08:56:19.9 |
HIP 48146 |
2.16 |
| 2026-06-03 12:00 |
09:48:57.54 |
+08:56:10.8 |
HIP 48146 |
2.53 |
| 2026-06-04 00:00 |
09:49:00.58 |
+08:56:01.3 |
HIP 48146 |
3.06 |
| 2026-06-04 12:00 |
09:49:03.67 |
+08:55:51.5 |
HIP 48146 |
3.68 |
| 2026-06-05 00:00 |
09:49:06.81 |
+08:55:41.5 |
HIP 48146 |
4.37 |
| 2026-06-05 12:00 |
09:49:10.00 |
+08:55:31.2 |
HIP 48146 |
5.10 |
| 2026-06-06 00:00 |
09:49:13.23 |
+08:55:20.6 |
HIP 48146 |
5.86 |
| 2026-06-06 12:00 |
09:49:16.51 |
+08:55:09.8 |
HIP 48146 |
6.65 |
| 2026-06-07 00:00 |
09:49:19.84 |
+08:54:58.7 |
HIP 48146 |
7.46 |
| 2026-06-07 12:00 |
09:49:23.21 |
+08:54:47.3 |
HIP 48146 |
8.29 |
| 2026-06-08 00:00 |
09:49:26.63 |
+08:54:35.6 |
HIP 48146 |
9.13 |
| 2026-06-08 12:00 |
09:49:30.10 |
+08:54:23.7 |
HIP 48146 |
9.99 |
| 2026-06-09 00:00 |
09:49:33.61 |
+08:54:11.4 |
HIP 48146 |
10.87 |
| 2026-06-09 12:00 |
09:49:37.16 |
+08:53:59.0 |
HIP 48146 |
11.76 |
| 2026-06-10 00:00 |
09:49:40.77 |
+08:53:46.2 |
HIP 48146 |
12.66 |
| 2026-06-10 12:00 |
09:49:44.41 |
+08:53:33.2 |
HIP 48146 |
13.58 |
| 2026-06-11 00:00 |
09:49:48.10 |
+08:53:19.9 |
HIP 48146 |
14.51 |
| 2026-06-11 12:00 |
09:49:51.84 |
+08:53:06.3 |
HIP 48146 |
15.45 |
| 2026-06-12 00:00 |
09:49:55.62 |
+08:52:52.5 |
HIP 48146 |
16.41 |
| 2026-06-12 12:00 |
09:49:59.44 |
+08:52:38.4 |
HIP 48146 |
17.38 |
| 2026-06-13 00:00 |
09:50:03.31 |
+08:52:24.0 |
HIP 48146 |
18.36 |
| 2026-06-13 12:00 |
09:50:07.23 |
+08:52:09.4 |
HIP 48146 |
19.35 |
| 2026-06-14 00:00 |
09:50:11.18 |
+08:51:54.5 |
HIP 48146 |
20.36 |
| 2026-06-14 12:00 |
09:50:15.18 |
+08:51:39.3 |
HIP 48146 |
21.37 |
| 2026-06-15 00:00 |
09:50:19.22 |
+08:51:23.9 |
HIP 48146 |
22.40 |
| 2026-06-15 12:00 |
09:50:23.31 |
+08:51:08.2 |
HIP 48146 |
23.44 |
| 2026-06-16 00:00 |
09:50:27.43 |
+08:50:52.3 |
HIP 48146 |
24.49 |
| 2026-06-16 12:00 |
09:50:31.60 |
+08:50:36.0 |
HIP 48146 |
25.56 |
| 2026-06-17 00:00 |
09:50:35.81 |
+08:50:19.6 |
HIP 48146 |
26.63 |
| 2026-06-17 12:00 |
09:50:40.07 |
+08:50:02.8 |
HIP 48146 |
27.72 |
| 2026-06-18 00:00 |
09:50:44.36 |
+08:49:45.8 |
HIP 48146 |
28.81 |
| 2026-06-18 12:00 |
09:50:48.69 |
+08:49:28.6 |
HIP 48370 |
28.54 |
| 2026-06-19 00:00 |
09:50:53.07 |
+08:49:11.1 |
HIP 48370 |
27.82 |
| 2026-06-19 12:00 |
09:50:57.48 |
+08:48:53.3 |
HIP 48370 |
27.12 |
| 2026-06-20 00:00 |
09:51:01.94 |
+08:48:35.3 |
HIP 48370 |
26.44 |
| 2026-06-20 12:00 |
09:51:06.43 |
+08:48:17.1 |
HIP 48370 |
25.79 |
| 2026-06-21 00:00 |
09:51:10.97 |
+08:47:58.5 |
HIP 48370 |
25.17 |
| 2026-06-21 12:00 |
09:51:15.54 |
+08:47:39.8 |
HIP 48370 |
24.59 |
| 2026-06-22 00:00 |
09:51:20.15 |
+08:47:20.8 |
HIP 48370 |
24.04 |