메타데이터
| 항목 |
값 |
| Designation |
P/2020 S5 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-08-08T07:36:05.472000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:34:12Z |
| Obs used |
74 |
| NEO |
- |
| M1 |
16.900 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-09-21T13:27:24.220800Z |
| Discovery magnitude (MPC) |
20.40 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-10-14.0000000 |
| e |
0.33831667 |
| q (au) |
2.678655 |
| a (au) |
4.048244 |
| i (deg) |
12.354134 |
| Ω (om, deg) |
316.000132 |
| ω (w, deg) |
52.998514 |
| M (ma, deg) |
8.069024 |
밝기
산란 + 전체 선형
$$
M_a = (15.871 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.871 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
14:44:31.78 |
-31:57:25.0 |
HIP 72257 |
28.83 |
| 2026-06-01 12:00 |
14:44:14.47 |
-31:55:28.8 |
HIP 72245 |
31.79 |
| 2026-06-02 00:00 |
14:43:57.31 |
-31:53:32.2 |
HIP 72245 |
34.32 |
| 2026-06-02 12:00 |
14:43:40.31 |
-31:51:35.0 |
HIP 72245 |
37.10 |
| 2026-06-03 00:00 |
14:43:23.48 |
-31:49:37.4 |
HIP 72245 |
40.07 |
| 2026-06-03 12:00 |
14:43:06.81 |
-31:47:39.4 |
HIP 72245 |
43.20 |
| 2026-06-04 00:00 |
14:42:50.31 |
-31:45:41.1 |
HIP 71665 |
43.39 |
| 2026-06-04 12:00 |
14:42:33.98 |
-31:43:42.3 |
HIP 71665 |
39.70 |
| 2026-06-05 00:00 |
14:42:17.82 |
-31:41:43.2 |
HIP 71665 |
36.12 |
| 2026-06-05 12:00 |
14:42:01.84 |
-31:39:43.7 |
HIP 71665 |
32.67 |
| 2026-06-06 00:00 |
14:41:46.03 |
-31:37:44.0 |
HIP 71665 |
29.37 |
| 2026-06-06 12:00 |
14:41:30.40 |
-31:35:44.0 |
HIP 71665 |
26.27 |
| 2026-06-07 00:00 |
14:41:14.96 |
-31:33:43.7 |
HIP 71665 |
23.45 |
| 2026-06-07 12:00 |
14:40:59.70 |
-31:31:43.2 |
HIP 71665 |
20.99 |
| 2026-06-08 00:00 |
14:40:44.62 |
-31:29:42.4 |
HIP 71665 |
19.02 |
| 2026-06-08 12:00 |
14:40:29.74 |
-31:27:41.5 |
HIP 71665 |
17.69 |
| 2026-06-09 00:00 |
14:40:15.04 |
-31:25:40.4 |
HIP 71665 |
17.12 |
| 2026-06-09 12:00 |
14:40:00.54 |
-31:23:39.1 |
HIP 71665 |
17.36 |
| 2026-06-10 00:00 |
14:39:46.23 |
-31:21:37.8 |
HIP 71665 |
18.37 |
| 2026-06-10 12:00 |
14:39:32.11 |
-31:19:36.3 |
HIP 71665 |
20.01 |
| 2026-06-11 00:00 |
14:39:18.20 |
-31:17:34.7 |
HIP 71665 |
22.13 |
| 2026-06-11 12:00 |
14:39:04.49 |
-31:15:33.1 |
HIP 71665 |
24.58 |
| 2026-06-12 00:00 |
14:38:50.98 |
-31:13:31.5 |
HIP 71528 |
21.15 |
| 2026-06-12 12:00 |
14:38:37.68 |
-31:11:29.8 |
HIP 71528 |
17.76 |
| 2026-06-13 00:00 |
14:38:24.58 |
-31:09:28.1 |
HIP 71528 |
14.45 |
| 2026-06-13 12:00 |
14:38:11.69 |
-31:07:26.5 |
HIP 71528 |
11.24 |
| 2026-06-14 00:00 |
14:37:59.01 |
-31:05:25.0 |
HIP 71528 |
8.24 |
| 2026-06-14 12:00 |
14:37:46.55 |
-31:03:23.5 |
HIP 71528 |
5.68 |
| 2026-06-15 00:00 |
14:37:34.30 |
-31:01:22.1 |
HIP 71528 |
4.35 |
| 2026-06-15 12:00 |
14:37:22.26 |
-30:59:20.8 |
HIP 71528 |
5.21 |
| 2026-06-16 00:00 |
14:37:10.44 |
-30:57:19.7 |
HIP 71528 |
7.49 |
| 2026-06-16 12:00 |
14:36:58.84 |
-30:55:18.8 |
HIP 71442 |
8.13 |
| 2026-06-17 00:00 |
14:36:47.46 |
-30:53:18.0 |
HIP 71442 |
9.08 |
| 2026-06-17 12:00 |
14:36:36.31 |
-30:51:17.5 |
HIP 71442 |
10.90 |
| 2026-06-18 00:00 |
14:36:25.37 |
-30:49:17.2 |
HIP 71442 |
13.20 |
| 2026-06-18 12:00 |
14:36:14.66 |
-30:47:17.1 |
HIP 71442 |
15.75 |
| 2026-06-19 00:00 |
14:36:04.18 |
-30:45:17.3 |
HIP 71442 |
18.43 |
| 2026-06-19 12:00 |
14:35:53.92 |
-30:43:17.8 |
HIP 71442 |
21.17 |
| 2026-06-20 00:00 |
14:35:43.89 |
-30:41:18.6 |
HIP 71229 |
23.27 |
| 2026-06-20 12:00 |
14:35:34.09 |
-30:39:19.8 |
HIP 71229 |
20.89 |
| 2026-06-21 00:00 |
14:35:24.52 |
-30:37:21.3 |
HIP 71229 |
18.71 |
| 2026-06-21 12:00 |
14:35:15.17 |
-30:35:23.2 |
HIP 71229 |
16.78 |
| 2026-06-22 00:00 |
14:35:06.06 |
-30:33:25.4 |
HIP 71229 |
15.18 |