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) |
| 2026-07-29 00:00 |
09:58:28.42 |
+08:13:49.6 |
HIP 48876 |
7.19 |
| 2026-07-29 12:00 |
09:58:35.09 |
+08:13:15.5 |
HIP 48876 |
8.80 |
| 2026-07-30 00:00 |
09:58:41.77 |
+08:12:41.3 |
HIP 48876 |
10.45 |
| 2026-07-30 12:00 |
09:58:48.46 |
+08:12:07.0 |
HIP 48876 |
12.14 |
| 2026-07-31 00:00 |
09:58:55.17 |
+08:11:32.5 |
HIP 48876 |
13.85 |
| 2026-07-31 12:00 |
09:59:01.89 |
+08:10:57.9 |
HIP 48876 |
15.57 |
| 2026-08-01 00:00 |
09:59:08.63 |
+08:10:23.2 |
HIP 48876 |
17.30 |
| 2026-08-01 12:00 |
09:59:15.38 |
+08:09:48.3 |
HIP 49029 |
15.91 |
| 2026-08-02 00:00 |
09:59:22.14 |
+08:09:13.2 |
HIP 49029 |
14.16 |
| 2026-08-02 12:00 |
09:59:28.92 |
+08:08:38.1 |
HIP 49029 |
12.40 |
| 2026-08-03 00:00 |
09:59:35.70 |
+08:08:02.8 |
HIP 49029 |
10.65 |
| 2026-08-03 12:00 |
09:59:42.51 |
+08:07:27.3 |
HIP 49029 |
8.91 |
| 2026-08-04 00:00 |
09:59:49.32 |
+08:06:51.8 |
HIP 49029 |
7.18 |
| 2026-08-04 12:00 |
09:59:56.14 |
+08:06:16.1 |
HIP 49029 |
5.49 |
| 2026-08-05 00:00 |
10:00:02.98 |
+08:05:40.3 |
HIP 49029 |
3.88 |
| 2026-08-05 12:00 |
10:00:09.82 |
+08:05:04.4 |
HIP 49029 |
2.53 |
| 2026-08-06 00:00 |
10:00:16.68 |
+08:04:28.3 |
HIP 49029 |
2.05 |
| 2026-08-06 12:00 |
10:00:23.55 |
+08:03:52.1 |
HIP 49029 |
2.92 |
| 2026-08-07 00:00 |
10:00:30.43 |
+08:03:15.8 |
HIP 49029 |
4.40 |
| 2026-08-07 12:00 |
10:00:37.31 |
+08:02:39.4 |
HIP 49029 |
6.06 |
| 2026-08-08 00:00 |
10:00:44.21 |
+08:02:02.9 |
HIP 49029 |
7.79 |
| 2026-08-08 12:00 |
10:00:51.11 |
+08:01:26.2 |
HIP 49029 |
9.56 |
| 2026-08-09 00:00 |
10:00:58.03 |
+08:00:49.4 |
HIP 49029 |
11.34 |
| 2026-08-09 12:00 |
10:01:04.95 |
+08:00:12.6 |
HIP 49029 |
13.13 |
| 2026-08-10 00:00 |
10:01:11.88 |
+07:59:35.6 |
HIP 49029 |
14.94 |
| 2026-08-10 12:00 |
10:01:18.82 |
+07:58:58.5 |
HIP 49029 |
16.75 |
| 2026-08-11 00:00 |
10:01:25.76 |
+07:58:21.3 |
HIP 49029 |
18.56 |
| 2026-08-11 12:00 |
10:01:32.71 |
+07:57:44.0 |
HIP 49029 |
20.38 |
| 2026-08-12 00:00 |
10:01:39.67 |
+07:57:06.6 |
HIP 49029 |
22.20 |
| 2026-08-12 12:00 |
10:01:46.64 |
+07:56:29.1 |
HIP 49029 |
24.03 |
| 2026-08-13 00:00 |
10:01:53.61 |
+07:55:51.5 |
HIP 49029 |
25.86 |
| 2026-08-13 12:00 |
10:02:00.58 |
+07:55:13.8 |
HIP 49256 |
26.55 |
| 2026-08-14 00:00 |
10:02:07.56 |
+07:54:36.0 |
HIP 49256 |
25.80 |
| 2026-08-14 12:00 |
10:02:14.54 |
+07:53:58.1 |
HIP 49256 |
25.16 |
| 2026-08-15 00:00 |
10:02:21.53 |
+07:53:20.1 |
HIP 49256 |
24.64 |
| 2026-08-15 12:00 |
10:02:28.52 |
+07:52:42.1 |
HIP 49256 |
24.25 |
| 2026-08-16 00:00 |
10:02:35.52 |
+07:52:03.9 |
HIP 49256 |
24.00 |
| 2026-08-16 12:00 |
10:02:42.52 |
+07:51:25.7 |
HIP 49256 |
23.89 |
| 2026-08-17 00:00 |
10:02:49.52 |
+07:50:47.4 |
HIP 49256 |
23.93 |
| 2026-08-17 12:00 |
10:02:56.52 |
+07:50:09.0 |
HIP 49256 |
24.11 |
| 2026-08-18 00:00 |
10:03:03.53 |
+07:49:30.5 |
HIP 49256 |
24.42 |
| 2026-08-18 12:00 |
10:03:10.53 |
+07:48:52.0 |
HIP 49256 |
24.87 |
| 2026-08-19 00:00 |
10:03:17.54 |
+07:48:13.4 |
HIP 49256 |
25.45 |