메타데이터
| 항목 |
값 |
| Designation |
C/2021 P1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-06-01T16:41:49.732800Z |
| Orbit solution date (soln_date, UTC) |
2024-03-19T12:12:38Z |
| Obs used |
104 |
| NEO |
- |
| M1 |
12.700 |
| K1 |
7.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2021-08-04T13:25:21.792000Z |
| Discovery magnitude (MPC) |
21.20 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-09-13.0000000 |
| e |
1.00024450 |
| q (au) |
4.374954 |
| a (au) |
-17893.332037 |
| i (deg) |
51.622012 |
| Ω (om, deg) |
359.671523 |
| ω (w, deg) |
40.363907 |
| M (ma, deg) |
-0.000108 |
밝기
산란 + 전체 선형
$$
M_a = (17.879 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.879 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.791 |
| k |
0.800 |
| 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 |
10:53:08.91 |
+36:46:29.3 |
HIP 53216 |
7.34 |
| 2026-06-01 12:00 |
10:53:10.08 |
+36:44:37.0 |
HIP 53216 |
5.54 |
| 2026-06-02 00:00 |
10:53:11.34 |
+36:42:44.4 |
HIP 53216 |
3.83 |
| 2026-06-02 12:00 |
10:53:12.70 |
+36:40:51.6 |
HIP 53216 |
2.41 |
| 2026-06-03 00:00 |
10:53:14.16 |
+36:38:58.5 |
HIP 53216 |
2.08 |
| 2026-06-03 12:00 |
10:53:15.71 |
+36:37:05.3 |
HIP 53216 |
3.19 |
| 2026-06-04 00:00 |
10:53:17.35 |
+36:35:11.7 |
HIP 53216 |
4.85 |
| 2026-06-04 12:00 |
10:53:19.09 |
+36:33:18.0 |
HIP 53216 |
6.66 |
| 2026-06-05 00:00 |
10:53:20.92 |
+36:31:24.1 |
HIP 53216 |
8.54 |
| 2026-06-05 12:00 |
10:53:22.84 |
+36:29:30.0 |
HIP 53216 |
10.44 |
| 2026-06-06 00:00 |
10:53:24.86 |
+36:27:35.6 |
HIP 53216 |
12.37 |
| 2026-06-06 12:00 |
10:53:26.97 |
+36:25:41.1 |
HIP 53216 |
14.31 |
| 2026-06-07 00:00 |
10:53:29.17 |
+36:23:46.3 |
HIP 53216 |
16.26 |
| 2026-06-07 12:00 |
10:53:31.46 |
+36:21:51.4 |
HIP 53216 |
18.23 |
| 2026-06-08 00:00 |
10:53:33.85 |
+36:19:56.3 |
HIP 53374 |
19.21 |
| 2026-06-08 12:00 |
10:53:36.32 |
+36:18:01.0 |
HIP 53374 |
17.78 |
| 2026-06-09 00:00 |
10:53:38.89 |
+36:16:05.6 |
HIP 53374 |
16.45 |
| 2026-06-09 12:00 |
10:53:41.54 |
+36:14:09.9 |
HIP 53374 |
15.25 |
| 2026-06-10 00:00 |
10:53:44.29 |
+36:12:14.1 |
HIP 53374 |
14.20 |
| 2026-06-10 12:00 |
10:53:47.12 |
+36:10:18.2 |
HIP 53374 |
13.36 |
| 2026-06-11 00:00 |
10:53:50.05 |
+36:08:22.1 |
HIP 53374 |
12.76 |
| 2026-06-11 12:00 |
10:53:53.06 |
+36:06:25.8 |
HIP 53374 |
12.46 |
| 2026-06-12 00:00 |
10:53:56.16 |
+36:04:29.4 |
HIP 53374 |
12.46 |
| 2026-06-12 12:00 |
10:53:59.35 |
+36:02:32.9 |
HIP 53374 |
12.77 |
| 2026-06-13 00:00 |
10:54:02.62 |
+36:00:36.2 |
HIP 53374 |
13.39 |
| 2026-06-13 12:00 |
10:54:05.99 |
+35:58:39.4 |
HIP 53374 |
14.26 |
| 2026-06-14 00:00 |
10:54:09.44 |
+35:56:42.5 |
HIP 53374 |
15.36 |
| 2026-06-14 12:00 |
10:54:12.97 |
+35:54:45.5 |
HIP 53374 |
16.63 |
| 2026-06-15 00:00 |
10:54:16.59 |
+35:52:48.3 |
HIP 53374 |
18.05 |
| 2026-06-15 12:00 |
10:54:20.30 |
+35:50:51.0 |
HIP 53374 |
19.58 |
| 2026-06-16 00:00 |
10:54:24.09 |
+35:48:53.7 |
HIP 53374 |
21.21 |
| 2026-06-16 12:00 |
10:54:27.97 |
+35:46:56.2 |
HIP 53374 |
22.91 |
| 2026-06-17 00:00 |
10:54:31.93 |
+35:44:58.6 |
HIP 53374 |
24.67 |
| 2026-06-17 12:00 |
10:54:35.97 |
+35:43:01.0 |
HIP 53374 |
26.49 |
| 2026-06-18 00:00 |
10:54:40.10 |
+35:41:03.3 |
HIP 53374 |
28.34 |
| 2026-06-18 12:00 |
10:54:44.30 |
+35:39:05.5 |
HIP 53374 |
30.24 |
| 2026-06-19 00:00 |
10:54:48.59 |
+35:37:07.6 |
HIP 53374 |
32.16 |
| 2026-06-19 12:00 |
10:54:52.96 |
+35:35:09.6 |
HIP 53374 |
34.11 |
| 2026-06-20 00:00 |
10:54:57.42 |
+35:33:11.6 |
HIP 53525 |
33.56 |
| 2026-06-20 12:00 |
10:55:01.95 |
+35:31:13.6 |
HIP 53525 |
31.61 |
| 2026-06-21 00:00 |
10:55:06.56 |
+35:29:15.5 |
HIP 53525 |
29.69 |
| 2026-06-21 12:00 |
10:55:11.24 |
+35:27:17.3 |
HIP 53525 |
27.78 |
| 2026-06-22 00:00 |
10:55:16.01 |
+35:25:19.1 |
HIP 53525 |
25.91 |