메타데이터
| 항목 |
값 |
| Designation |
P/2016 A7 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-02-25T20:41:32.879040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:21Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
7.800 |
| K1 |
33.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-03-18.0000000 |
| e |
0.56662578 |
| q (au) |
2.176649 |
| a (au) |
5.022563 |
| i (deg) |
16.637470 |
| Ω (om, deg) |
221.466093 |
| ω (w, deg) |
352.469583 |
| M (ma, deg) |
1.850871 |
밝기
산란 + 전체 선형
$$
M_a = (13.342 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.342 |
| 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 |
07:10:42.90 |
+09:14:25.6 |
HIP 34672 |
8.42 |
| 2026-06-01 12:00 |
07:11:17.11 |
+09:14:05.1 |
HIP 34672 |
10.91 |
| 2026-06-02 00:00 |
07:11:51.41 |
+09:13:43.6 |
HIP 34672 |
17.62 |
| 2026-06-02 12:00 |
07:12:25.82 |
+09:13:21.1 |
HIP 34672 |
25.44 |
| 2026-06-03 00:00 |
07:13:00.33 |
+09:12:57.5 |
HIP 34672 |
33.62 |
| 2026-06-03 12:00 |
07:13:34.94 |
+09:12:32.9 |
HIP 35101 |
33.28 |
| 2026-06-04 00:00 |
07:14:09.65 |
+09:12:07.2 |
HIP 35101 |
26.63 |
| 2026-06-04 12:00 |
07:14:44.46 |
+09:11:40.5 |
HIP 35101 |
21.40 |
| 2026-06-05 00:00 |
07:15:19.37 |
+09:11:12.7 |
HIP 35101 |
18.83 |
| 2026-06-05 12:00 |
07:15:54.38 |
+09:10:43.9 |
HIP 35227 |
17.57 |
| 2026-06-06 00:00 |
07:16:29.49 |
+09:10:14.0 |
HIP 35227 |
12.56 |
| 2026-06-06 12:00 |
07:17:04.69 |
+09:09:43.1 |
HIP 35310 |
11.44 |
| 2026-06-07 00:00 |
07:17:39.99 |
+09:09:11.1 |
HIP 35310 |
8.36 |
| 2026-06-07 12:00 |
07:18:15.39 |
+09:08:38.1 |
HIP 35310 |
12.73 |
| 2026-06-08 00:00 |
07:18:50.88 |
+09:08:04.0 |
HIP 35519 |
16.52 |
| 2026-06-08 12:00 |
07:19:26.46 |
+09:07:28.8 |
HIP 35519 |
9.21 |
| 2026-06-09 00:00 |
07:20:02.14 |
+09:06:52.6 |
HIP 35519 |
7.21 |
| 2026-06-09 12:00 |
07:20:37.92 |
+09:06:15.3 |
HIP 35519 |
13.26 |
| 2026-06-10 00:00 |
07:21:13.78 |
+09:05:36.9 |
HIP 35750 |
21.32 |
| 2026-06-10 12:00 |
07:21:49.74 |
+09:04:57.4 |
HIP 35750 |
14.12 |
| 2026-06-11 00:00 |
07:22:25.79 |
+09:04:16.9 |
HIP 35750 |
10.12 |
| 2026-06-11 12:00 |
07:23:01.93 |
+09:03:35.2 |
HIP 35750 |
12.84 |
| 2026-06-12 00:00 |
07:23:38.16 |
+09:02:52.5 |
HIP 35915 |
12.63 |
| 2026-06-12 12:00 |
07:24:14.48 |
+09:02:08.7 |
HIP 35915 |
8.28 |
| 2026-06-13 00:00 |
07:24:50.89 |
+09:01:23.8 |
HIP 35915 |
11.82 |
| 2026-06-13 12:00 |
07:25:27.39 |
+09:00:37.9 |
HIP 36041 |
16.19 |
| 2026-06-14 00:00 |
07:26:03.97 |
+08:59:50.8 |
HIP 36041 |
17.83 |
| 2026-06-14 12:00 |
07:26:40.64 |
+08:59:02.6 |
HIP 36205 |
17.29 |
| 2026-06-15 00:00 |
07:27:17.40 |
+08:58:13.4 |
HIP 36205 |
13.06 |
| 2026-06-15 12:00 |
07:27:54.24 |
+08:57:23.0 |
HIP 36284 |
4.27 |
| 2026-06-16 00:00 |
07:28:31.16 |
+08:56:31.6 |
HIP 36284 |
5.36 |
| 2026-06-16 12:00 |
07:29:08.17 |
+08:55:39.0 |
HIP 36284 |
14.41 |
| 2026-06-17 00:00 |
07:29:45.26 |
+08:54:45.4 |
HIP 36284 |
23.58 |
| 2026-06-17 12:00 |
07:30:22.43 |
+08:53:50.6 |
HIP 36620 |
22.27 |
| 2026-06-18 00:00 |
07:30:59.67 |
+08:52:54.8 |
HIP 36620 |
13.14 |
| 2026-06-18 12:00 |
07:31:37.00 |
+08:51:57.8 |
HIP 36620 |
4.49 |
| 2026-06-19 00:00 |
07:32:14.41 |
+08:50:59.8 |
HIP 36620 |
6.31 |
| 2026-06-19 12:00 |
07:32:51.90 |
+08:50:00.6 |
HIP 36620 |
15.25 |
| 2026-06-20 00:00 |
07:33:29.46 |
+08:49:00.4 |
HIP 36620 |
24.49 |
| 2026-06-20 12:00 |
07:34:07.10 |
+08:47:59.0 |
HIP 36911 |
24.92 |
| 2026-06-21 00:00 |
07:34:44.82 |
+08:46:56.6 |
HIP 36911 |
18.28 |
| 2026-06-21 12:00 |
07:35:22.61 |
+08:45:53.0 |
HIP 36911 |
14.93 |
| 2026-06-22 00:00 |
07:36:00.47 |
+08:44:48.3 |
HIP 37027 |
16.09 |