메타데이터
| 항목 |
값 |
| Designation |
C/2015 V4 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-08-27T23:52:13.535040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:16Z |
| Obs used |
79 |
| NEO |
- |
| M1 |
12.900 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-03-18.0000000 |
| e |
0.70560176 |
| q (au) |
5.459628 |
| a (au) |
18.545043 |
| i (deg) |
60.751306 |
| Ω (om, deg) |
179.896328 |
| ω (w, deg) |
306.907117 |
| M (ma, deg) |
357.988428 |
밝기
산란 + 전체 선형
$$
M_a = (6.197 + 4.797\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.197 |
| n |
4.797 |
| 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) |
| 2026-09-20 00:00 |
16:47:36.03 |
+36:07:36.2 |
HIP 82275 |
18.05 |
| 2026-09-20 12:00 |
16:47:39.56 |
+36:06:15.7 |
HIP 82275 |
16.63 |
| 2026-09-21 00:00 |
16:47:43.16 |
+36:04:55.5 |
HIP 82275 |
15.21 |
| 2026-09-21 12:00 |
16:47:46.82 |
+36:03:35.4 |
HIP 82275 |
13.81 |
| 2026-09-22 00:00 |
16:47:50.55 |
+36:02:15.4 |
HIP 82275 |
12.42 |
| 2026-09-22 12:00 |
16:47:54.33 |
+36:00:55.7 |
HIP 82275 |
11.07 |
| 2026-09-23 00:00 |
16:47:58.18 |
+35:59:36.1 |
HIP 82275 |
9.75 |
| 2026-09-23 12:00 |
16:48:02.09 |
+35:58:16.8 |
HIP 82275 |
8.50 |
| 2026-09-24 00:00 |
16:48:06.07 |
+35:56:57.6 |
HIP 82275 |
7.35 |
| 2026-09-24 12:00 |
16:48:10.10 |
+35:55:38.7 |
HIP 82275 |
6.36 |
| 2026-09-25 00:00 |
16:48:14.19 |
+35:54:19.9 |
HIP 82275 |
5.61 |
| 2026-09-25 12:00 |
16:48:18.35 |
+35:53:01.4 |
HIP 82275 |
5.22 |
| 2026-09-26 00:00 |
16:48:22.57 |
+35:51:43.1 |
HIP 82275 |
5.26 |
| 2026-09-26 12:00 |
16:48:26.85 |
+35:50:25.0 |
HIP 82275 |
5.73 |
| 2026-09-27 00:00 |
16:48:31.18 |
+35:49:07.1 |
HIP 82275 |
6.55 |
| 2026-09-27 12:00 |
16:48:35.58 |
+35:47:49.4 |
HIP 82275 |
7.59 |
| 2026-09-28 00:00 |
16:48:40.04 |
+35:46:32.0 |
HIP 82275 |
8.79 |
| 2026-09-28 12:00 |
16:48:44.56 |
+35:45:14.9 |
HIP 82275 |
10.09 |
| 2026-09-29 00:00 |
16:48:49.13 |
+35:43:58.0 |
HIP 82275 |
11.46 |
| 2026-09-29 12:00 |
16:48:53.77 |
+35:42:41.3 |
HIP 82275 |
12.88 |
| 2026-09-30 00:00 |
16:48:58.46 |
+35:41:24.9 |
HIP 82275 |
14.33 |
| 2026-09-30 12:00 |
16:49:03.22 |
+35:40:08.7 |
HIP 82371 |
12.95 |
| 2026-10-01 00:00 |
16:49:08.03 |
+35:38:52.8 |
HIP 82371 |
11.41 |
| 2026-10-01 12:00 |
16:49:12.90 |
+35:37:37.2 |
HIP 82371 |
9.88 |
| 2026-10-02 00:00 |
16:49:17.83 |
+35:36:21.9 |
HIP 82371 |
8.37 |
| 2026-10-02 12:00 |
16:49:22.81 |
+35:35:06.8 |
HIP 82371 |
6.89 |
| 2026-10-03 00:00 |
16:49:27.85 |
+35:33:52.0 |
HIP 82371 |
5.48 |
| 2026-10-03 12:00 |
16:49:32.95 |
+35:32:37.5 |
HIP 82371 |
4.20 |
| 2026-10-04 00:00 |
16:49:38.11 |
+35:31:23.3 |
HIP 82371 |
3.23 |
| 2026-10-04 12:00 |
16:49:43.32 |
+35:30:09.4 |
HIP 82371 |
2.90 |
| 2026-10-05 00:00 |
16:49:48.59 |
+35:28:55.8 |
HIP 82371 |
3.41 |
| 2026-10-05 12:00 |
16:49:53.92 |
+35:27:42.5 |
HIP 82371 |
4.49 |
| 2026-10-06 00:00 |
16:49:59.30 |
+35:26:29.6 |
HIP 82371 |
5.82 |
| 2026-10-06 12:00 |
16:50:04.73 |
+35:25:16.9 |
HIP 82371 |
7.28 |
| 2026-10-07 00:00 |
16:50:10.22 |
+35:24:04.6 |
HIP 82371 |
8.80 |
| 2026-10-07 12:00 |
16:50:15.77 |
+35:22:52.6 |
HIP 82371 |
10.36 |
| 2026-10-08 00:00 |
16:50:21.37 |
+35:21:40.9 |
HIP 82371 |
11.95 |
| 2026-10-08 12:00 |
16:50:27.03 |
+35:20:29.6 |
HIP 82371 |
13.55 |
| 2026-10-09 00:00 |
16:50:32.74 |
+35:19:18.6 |
HIP 82371 |
15.16 |
| 2026-10-09 12:00 |
16:50:38.50 |
+35:18:08.0 |
HIP 82371 |
16.79 |
| 2026-10-10 00:00 |
16:50:44.31 |
+35:16:57.7 |
HIP 82371 |
18.42 |
| 2026-10-10 12:00 |
16:50:50.18 |
+35:15:47.8 |
HIP 82371 |
20.06 |
| 2026-10-11 00:00 |
16:50:56.10 |
+35:14:38.3 |
HIP 82532 |
21.27 |