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) |
| 2026-06-01 00:00 |
16:59:40.83 |
+39:17:11.2 |
HIP 83186 |
12.14 |
| 2026-06-01 12:00 |
16:59:33.50 |
+39:17:28.2 |
HIP 83186 |
13.02 |
| 2026-06-02 00:00 |
16:59:26.17 |
+39:17:44.4 |
HIP 83186 |
13.97 |
| 2026-06-02 12:00 |
16:59:18.83 |
+39:17:59.8 |
HIP 83186 |
15.00 |
| 2026-06-03 00:00 |
16:59:11.48 |
+39:18:14.4 |
HIP 83186 |
16.08 |
| 2026-06-03 12:00 |
16:59:04.13 |
+39:18:28.2 |
HIP 83186 |
17.21 |
| 2026-06-04 00:00 |
16:58:56.78 |
+39:18:41.2 |
HIP 83186 |
18.37 |
| 2026-06-04 12:00 |
16:58:49.42 |
+39:18:53.3 |
HIP 83186 |
19.56 |
| 2026-06-05 00:00 |
16:58:42.06 |
+39:19:04.7 |
HIP 83186 |
20.77 |
| 2026-06-05 12:00 |
16:58:34.70 |
+39:19:15.2 |
HIP 82953 |
21.65 |
| 2026-06-06 00:00 |
16:58:27.34 |
+39:19:25.0 |
HIP 82953 |
20.63 |
| 2026-06-06 12:00 |
16:58:19.97 |
+39:19:33.9 |
HIP 82953 |
19.65 |
| 2026-06-07 00:00 |
16:58:12.61 |
+39:19:42.0 |
HIP 82953 |
18.72 |
| 2026-06-07 12:00 |
16:58:05.25 |
+39:19:49.3 |
HIP 82953 |
17.84 |
| 2026-06-08 00:00 |
16:57:57.90 |
+39:19:55.8 |
HIP 82953 |
17.03 |
| 2026-06-08 12:00 |
16:57:50.54 |
+39:20:01.5 |
HIP 82953 |
16.30 |
| 2026-06-09 00:00 |
16:57:43.19 |
+39:20:06.3 |
HIP 82953 |
15.65 |
| 2026-06-09 12:00 |
16:57:35.84 |
+39:20:10.4 |
HIP 82953 |
15.10 |
| 2026-06-10 00:00 |
16:57:28.50 |
+39:20:13.6 |
HIP 82953 |
14.65 |
| 2026-06-10 12:00 |
16:57:21.16 |
+39:20:16.0 |
HIP 82953 |
14.31 |
| 2026-06-11 00:00 |
16:57:13.83 |
+39:20:17.7 |
HIP 82953 |
14.10 |
| 2026-06-11 12:00 |
16:57:06.51 |
+39:20:18.4 |
HIP 82953 |
14.02 |
| 2026-06-12 00:00 |
16:56:59.20 |
+39:20:18.4 |
HIP 82953 |
14.06 |
| 2026-06-12 12:00 |
16:56:51.89 |
+39:20:17.6 |
HIP 82953 |
14.23 |
| 2026-06-13 00:00 |
16:56:44.60 |
+39:20:16.0 |
HIP 82953 |
14.53 |
| 2026-06-13 12:00 |
16:56:37.31 |
+39:20:13.5 |
HIP 82953 |
14.94 |
| 2026-06-14 00:00 |
16:56:30.04 |
+39:20:10.2 |
HIP 82953 |
15.46 |
| 2026-06-14 12:00 |
16:56:22.78 |
+39:20:06.2 |
HIP 82953 |
16.07 |
| 2026-06-15 00:00 |
16:56:15.53 |
+39:20:01.3 |
HIP 82953 |
16.76 |
| 2026-06-15 12:00 |
16:56:08.29 |
+39:19:55.6 |
HIP 82953 |
17.53 |
| 2026-06-16 00:00 |
16:56:01.07 |
+39:19:49.1 |
HIP 82953 |
18.36 |
| 2026-06-16 12:00 |
16:55:53.87 |
+39:19:41.8 |
HIP 82953 |
19.25 |
| 2026-06-17 00:00 |
16:55:46.68 |
+39:19:33.7 |
HIP 82953 |
20.18 |
| 2026-06-17 12:00 |
16:55:39.50 |
+39:19:24.8 |
HIP 82953 |
21.15 |
| 2026-06-18 00:00 |
16:55:32.35 |
+39:19:15.0 |
HIP 82953 |
22.16 |
| 2026-06-18 12:00 |
16:55:25.21 |
+39:19:04.5 |
HIP 82953 |
23.20 |
| 2026-06-19 00:00 |
16:55:18.09 |
+39:18:53.2 |
HIP 82953 |
24.27 |
| 2026-06-19 12:00 |
16:55:11.00 |
+39:18:41.1 |
HIP 82953 |
25.35 |
| 2026-06-20 00:00 |
16:55:03.92 |
+39:18:28.2 |
HIP 82953 |
26.46 |
| 2026-06-20 12:00 |
16:54:56.86 |
+39:18:14.6 |
HIP 82953 |
27.58 |
| 2026-06-21 00:00 |
16:54:49.83 |
+39:18:00.1 |
HIP 82589 |
28.12 |
| 2026-06-21 12:00 |
16:54:42.82 |
+39:17:44.8 |
HIP 82589 |
27.28 |
| 2026-06-22 00:00 |
16:54:35.83 |
+39:17:28.8 |
HIP 82589 |
26.50 |