C/2016 P4 (PANSTARRS)
메타데이터
| 항목 |
값 |
| Designation |
C/2016 P4 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-10-15T10:34:01.790400Z |
| Orbit solution date (soln_date, UTC) |
2022-06-20T23:12:32Z |
| Obs used |
45 |
| NEO |
- |
| M1 |
7.600 |
| K1 |
14.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-09-18.0000000 |
| e |
0.98170392 |
| q (au) |
5.891877 |
| a (au) |
322.029424 |
| i (deg) |
29.927110 |
| Ω (om, deg) |
320.784742 |
| ω (w, deg) |
355.902036 |
| M (ma, deg) |
359.995320 |
밝기
산란 + 전체 선형
$$
M_a = (8.699 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.699 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.617 |
| k |
0.800 |
| 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) |
| 2026-02-03 00:00 |
04:23:04.57 |
+50:15:16.4 |
HIP 20370 |
18.27 |
| 2026-02-03 12:00 |
04:23:02.46 |
+50:14:31.5 |
HIP 20370 |
17.50 |
| 2026-02-04 00:00 |
04:23:00.43 |
+50:13:46.6 |
HIP 20370 |
16.74 |
| 2026-02-04 12:00 |
04:22:58.47 |
+50:13:01.8 |
HIP 20370 |
16.00 |
| 2026-02-05 00:00 |
04:22:56.59 |
+50:12:16.9 |
HIP 20370 |
15.28 |
| 2026-02-05 12:00 |
04:22:54.79 |
+50:11:32.0 |
HIP 20370 |
14.57 |
| 2026-02-06 00:00 |
04:22:53.06 |
+50:10:47.2 |
HIP 20370 |
13.88 |
| 2026-02-06 12:00 |
04:22:51.42 |
+50:10:02.3 |
HIP 20370 |
13.22 |
| 2026-02-07 00:00 |
04:22:49.85 |
+50:09:17.5 |
HIP 20370 |
12.58 |
| 2026-02-07 12:00 |
04:22:48.35 |
+50:08:32.6 |
HIP 20370 |
11.96 |
| 2026-02-08 00:00 |
04:22:46.94 |
+50:07:47.9 |
HIP 20370 |
11.38 |
| 2026-02-08 12:00 |
04:22:45.60 |
+50:07:03.1 |
HIP 20370 |
10.84 |
| 2026-02-09 00:00 |
04:22:44.35 |
+50:06:18.3 |
HIP 20370 |
10.34 |
| 2026-02-09 12:00 |
04:22:43.16 |
+50:05:33.6 |
HIP 20370 |
9.88 |
| 2026-02-10 00:00 |
04:22:42.06 |
+50:04:48.9 |
HIP 20370 |
9.48 |
| 2026-02-10 12:00 |
04:22:41.04 |
+50:04:04.3 |
HIP 20370 |
9.13 |
| 2026-02-11 00:00 |
04:22:40.09 |
+50:03:19.7 |
HIP 20370 |
8.85 |
| 2026-02-11 12:00 |
04:22:39.22 |
+50:02:35.2 |
HIP 20370 |
8.64 |
| 2026-02-12 00:00 |
04:22:38.44 |
+50:01:50.7 |
HIP 20370 |
8.51 |
| 2026-02-12 12:00 |
04:22:37.72 |
+50:01:06.3 |
HIP 20370 |
8.45 |
| 2026-02-13 00:00 |
04:22:37.09 |
+50:00:21.9 |
HIP 20370 |
8.47 |
| 2026-02-13 12:00 |
04:22:36.54 |
+49:59:37.6 |
HIP 20370 |
8.57 |
| 2026-02-14 00:00 |
04:22:36.06 |
+49:58:53.3 |
HIP 20370 |
8.74 |
| 2026-02-14 12:00 |
04:22:35.66 |
+49:58:09.1 |
HIP 20370 |
8.98 |
| 2026-02-15 00:00 |
04:22:35.34 |
+49:57:25.0 |
HIP 20370 |
9.29 |
| 2026-02-15 12:00 |
04:22:35.10 |
+49:56:41.0 |
HIP 20370 |
9.65 |
| 2026-02-16 00:00 |
04:22:34.94 |
+49:55:57.1 |
HIP 20370 |
10.06 |
| 2026-02-16 12:00 |
04:22:34.86 |
+49:55:13.2 |
HIP 20370 |
10.51 |
| 2026-02-17 00:00 |
04:22:34.85 |
+49:54:29.4 |
HIP 20370 |
11.01 |
| 2026-02-17 12:00 |
04:22:34.93 |
+49:53:45.7 |
HIP 20370 |
11.53 |
| 2026-02-18 00:00 |
04:22:35.08 |
+49:53:02.1 |
HIP 20370 |
12.08 |
| 2026-02-18 12:00 |
04:22:35.31 |
+49:52:18.6 |
HIP 20370 |
12.66 |
| 2026-02-19 00:00 |
04:22:35.61 |
+49:51:35.3 |
HIP 20370 |
13.26 |
| 2026-02-19 12:00 |
04:22:36.00 |
+49:50:52.0 |
HIP 20370 |
13.88 |
| 2026-02-20 00:00 |
04:22:36.46 |
+49:50:08.8 |
HIP 20370 |
14.51 |
| 2026-02-20 12:00 |
04:22:37.00 |
+49:49:25.7 |
HIP 20370 |
15.15 |
| 2026-02-21 00:00 |
04:22:37.62 |
+49:48:42.8 |
HIP 20370 |
15.81 |
| 2026-02-21 12:00 |
04:22:38.32 |
+49:48:00.0 |
HIP 20370 |
16.48 |
| 2026-02-22 00:00 |
04:22:39.09 |
+49:47:17.2 |
HIP 20370 |
17.15 |
| 2026-02-22 12:00 |
04:22:39.94 |
+49:46:34.6 |
HIP 20370 |
17.84 |
| 2026-02-23 00:00 |
04:22:40.87 |
+49:45:52.2 |
HIP 20370 |
18.53 |
| 2026-02-23 12:00 |
04:22:41.87 |
+49:45:09.9 |
HIP 20370 |
19.23 |
| 2026-02-24 00:00 |
04:22:42.95 |
+49:44:27.7 |
HIP 20370 |
19.93 |