메타데이터
| 항목 |
값 |
| Designation |
P/2016 A3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-04-13T17:31:26.886720Z |
| Orbit solution date (soln_date, UTC) |
2022-07-31T01:43:22Z |
| Obs used |
198 |
| NEO |
- |
| M1 |
4.300 |
| K1 |
17.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-05-17.0000000 |
| e |
0.38019712 |
| q (au) |
4.789503 |
| a (au) |
7.727462 |
| i (deg) |
8.593880 |
| Ω (om, deg) |
187.794592 |
| ω (w, deg) |
338.486358 |
| M (ma, deg) |
1.526509 |
밝기
산란 + 전체 선형
$$
M_a = (5.010 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.010 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.971 |
| 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) |
| 2026-03-26 00:00 |
22:17:15.15 |
-05:40:26.4 |
HIP 110023 |
17.34 |
| 2026-03-26 12:00 |
22:17:25.81 |
-05:39:23.3 |
HIP 110108 |
16.52 |
| 2026-03-27 00:00 |
22:17:36.43 |
-05:38:20.3 |
HIP 110108 |
15.48 |
| 2026-03-27 12:00 |
22:17:47.00 |
-05:37:17.4 |
HIP 110108 |
14.93 |
| 2026-03-28 00:00 |
22:17:57.54 |
-05:36:14.7 |
HIP 110108 |
14.90 |
| 2026-03-28 12:00 |
22:18:08.04 |
-05:35:12.0 |
HIP 110108 |
15.40 |
| 2026-03-29 00:00 |
22:18:18.50 |
-05:34:09.5 |
HIP 110108 |
16.37 |
| 2026-03-29 12:00 |
22:18:28.91 |
-05:33:07.1 |
HIP 110108 |
17.73 |
| 2026-03-30 00:00 |
22:18:39.29 |
-05:32:04.8 |
HIP 110108 |
19.39 |
| 2026-03-30 12:00 |
22:18:49.62 |
-05:31:02.7 |
HIP 110134 |
19.40 |
| 2026-03-31 00:00 |
22:18:59.91 |
-05:30:00.7 |
HIP 110134 |
19.12 |
| 2026-03-31 12:00 |
22:19:10.15 |
-05:28:58.9 |
HIP 110134 |
19.24 |
| 2026-04-01 00:00 |
22:19:20.35 |
-05:27:57.2 |
HIP 110134 |
19.75 |
| 2026-04-01 12:00 |
22:19:30.51 |
-05:26:55.6 |
HIP 110134 |
20.60 |
| 2026-04-02 00:00 |
22:19:40.63 |
-05:25:54.2 |
HIP 110134 |
21.75 |
| 2026-04-02 12:00 |
22:19:50.69 |
-05:24:52.9 |
HIP 110134 |
23.16 |
| 2026-04-03 00:00 |
22:20:00.72 |
-05:23:51.8 |
HIP 110359 |
23.56 |
| 2026-04-03 12:00 |
22:20:10.70 |
-05:22:50.8 |
HIP 110359 |
21.12 |
| 2026-04-04 00:00 |
22:20:20.63 |
-05:21:50.0 |
HIP 110359 |
18.76 |
| 2026-04-04 12:00 |
22:20:30.51 |
-05:20:49.4 |
HIP 110359 |
16.51 |
| 2026-04-05 00:00 |
22:20:40.35 |
-05:19:48.9 |
HIP 110359 |
14.40 |
| 2026-04-05 12:00 |
22:20:50.14 |
-05:18:48.6 |
HIP 110359 |
12.51 |
| 2026-04-06 00:00 |
22:20:59.89 |
-05:17:48.5 |
HIP 110359 |
10.94 |
| 2026-04-06 12:00 |
22:21:09.58 |
-05:16:48.5 |
HIP 110359 |
9.83 |
| 2026-04-07 00:00 |
22:21:19.23 |
-05:15:48.7 |
HIP 110359 |
9.33 |
| 2026-04-07 12:00 |
22:21:28.83 |
-05:14:49.1 |
HIP 110359 |
9.54 |
| 2026-04-08 00:00 |
22:21:38.38 |
-05:13:49.7 |
HIP 110359 |
10.40 |
| 2026-04-08 12:00 |
22:21:47.88 |
-05:12:50.5 |
HIP 110359 |
11.77 |
| 2026-04-09 00:00 |
22:21:57.32 |
-05:11:51.4 |
HIP 110359 |
13.48 |
| 2026-04-09 12:00 |
22:22:06.72 |
-05:10:52.6 |
HIP 110359 |
15.41 |
| 2026-04-10 00:00 |
22:22:16.07 |
-05:09:54.0 |
HIP 110359 |
17.48 |
| 2026-04-10 12:00 |
22:22:25.36 |
-05:08:55.5 |
HIP 110359 |
19.65 |
| 2026-04-11 00:00 |
22:22:34.61 |
-05:07:57.3 |
HIP 110359 |
21.88 |
| 2026-04-11 12:00 |
22:22:43.80 |
-05:06:59.2 |
HIP 110359 |
24.15 |
| 2026-04-12 00:00 |
22:22:52.93 |
-05:06:01.4 |
HIP 110578 |
24.27 |
| 2026-04-12 12:00 |
22:23:02.02 |
-05:05:03.8 |
HIP 110578 |
21.94 |
| 2026-04-13 00:00 |
22:23:11.05 |
-05:04:06.4 |
HIP 110578 |
19.65 |
| 2026-04-13 12:00 |
22:23:20.02 |
-05:03:09.3 |
HIP 110578 |
17.42 |
| 2026-04-14 00:00 |
22:23:28.94 |
-05:02:12.3 |
HIP 110578 |
15.26 |
| 2026-04-14 12:00 |
22:23:37.81 |
-05:01:15.6 |
HIP 110578 |
13.20 |
| 2026-04-15 00:00 |
22:23:46.62 |
-05:00:19.1 |
HIP 110578 |
11.29 |
| 2026-04-15 12:00 |
22:23:55.37 |
-04:59:22.9 |
HIP 110578 |
9.60 |
| 2026-04-16 00:00 |
22:24:04.06 |
-04:58:26.9 |
HIP 110578 |
8.26 |