메타데이터
| 항목 |
값 |
| Designation |
P/2021 P3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2021-05-31T00:59:23.956800Z |
| Orbit solution date (soln_date, UTC) |
2024-04-13T16:42:58Z |
| Obs used |
104 |
| NEO |
- |
| M1 |
13.700 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2021-08-11T14:01:45.033600Z |
| Discovery magnitude (MPC) |
20.63 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-09-09.0000000 |
| e |
0.34046368 |
| q (au) |
2.916288 |
| a (au) |
4.421724 |
| i (deg) |
27.156308 |
| Ω (om, deg) |
358.237092 |
| ω (w, deg) |
334.236786 |
| M (ma, deg) |
10.701892 |
밝기
산란 + 전체 선형
$$
M_a = (14.341 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.341 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.755 |
| 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) |
| 2026-07-29 00:00 |
10:52:32.14 |
+13:37:11.3 |
HIP 53097 |
11.89 |
| 2026-07-29 12:00 |
10:52:49.68 |
+13:34:26.8 |
HIP 53265 |
14.36 |
| 2026-07-30 00:00 |
10:53:07.28 |
+13:31:42.1 |
HIP 53265 |
13.39 |
| 2026-07-30 12:00 |
10:53:24.93 |
+13:28:57.2 |
HIP 53265 |
14.28 |
| 2026-07-31 00:00 |
10:53:42.63 |
+13:26:12.1 |
HIP 53265 |
16.75 |
| 2026-07-31 12:00 |
10:54:00.39 |
+13:23:26.9 |
HIP 53233 |
18.77 |
| 2026-08-01 00:00 |
10:54:18.19 |
+13:20:41.6 |
HIP 53388 |
16.59 |
| 2026-08-01 12:00 |
10:54:36.05 |
+13:17:56.1 |
HIP 53388 |
11.47 |
| 2026-08-02 00:00 |
10:54:53.95 |
+13:15:10.4 |
HIP 53388 |
6.38 |
| 2026-08-02 12:00 |
10:55:11.91 |
+13:12:24.6 |
HIP 53388 |
1.75 |
| 2026-08-03 00:00 |
10:55:29.91 |
+13:09:38.7 |
HIP 53388 |
4.36 |
| 2026-08-03 12:00 |
10:55:47.96 |
+13:06:52.6 |
HIP 53388 |
9.43 |
| 2026-08-04 00:00 |
10:56:06.06 |
+13:04:06.4 |
HIP 53388 |
14.60 |
| 2026-08-04 12:00 |
10:56:24.20 |
+13:01:20.0 |
HIP 53388 |
19.80 |
| 2026-08-05 00:00 |
10:56:42.40 |
+12:58:33.5 |
HIP 53388 |
25.02 |
| 2026-08-05 12:00 |
10:57:00.63 |
+12:55:46.9 |
HIP 53633 |
28.28 |
| 2026-08-06 00:00 |
10:57:18.91 |
+12:53:00.1 |
HIP 53633 |
27.82 |
| 2026-08-06 12:00 |
10:57:37.24 |
+12:50:13.2 |
HIP 53633 |
28.35 |
| 2026-08-07 00:00 |
10:57:55.61 |
+12:47:26.2 |
HIP 53633 |
29.80 |
| 2026-08-07 12:00 |
10:58:14.03 |
+12:44:39.1 |
HIP 53633 |
32.07 |
| 2026-08-08 00:00 |
10:58:32.48 |
+12:41:51.8 |
HIP 53633 |
35.00 |
| 2026-08-08 12:00 |
10:58:50.98 |
+12:39:04.4 |
HIP 53633 |
38.44 |
| 2026-08-09 00:00 |
10:59:09.53 |
+12:36:16.9 |
HIP 53633 |
42.27 |
| 2026-08-09 12:00 |
10:59:28.11 |
+12:33:29.3 |
HIP 53859 |
38.85 |
| 2026-08-10 00:00 |
10:59:46.73 |
+12:30:41.6 |
HIP 53859 |
33.91 |
| 2026-08-10 12:00 |
11:00:05.39 |
+12:27:53.7 |
HIP 53859 |
29.09 |
| 2026-08-11 00:00 |
11:00:24.09 |
+12:25:05.8 |
HIP 53859 |
24.50 |
| 2026-08-11 12:00 |
11:00:42.83 |
+12:22:17.8 |
HIP 53859 |
20.28 |
| 2026-08-12 00:00 |
11:01:01.61 |
+12:19:29.6 |
HIP 53859 |
16.73 |
| 2026-08-12 12:00 |
11:01:20.42 |
+12:16:41.4 |
HIP 53859 |
14.36 |
| 2026-08-13 00:00 |
11:01:39.27 |
+12:13:53.1 |
HIP 53859 |
13.81 |
| 2026-08-13 12:00 |
11:01:58.16 |
+12:11:04.7 |
HIP 53859 |
15.29 |
| 2026-08-14 00:00 |
11:02:17.08 |
+12:08:16.2 |
HIP 53859 |
18.31 |
| 2026-08-14 12:00 |
11:02:36.04 |
+12:05:27.7 |
HIP 53859 |
22.27 |
| 2026-08-15 00:00 |
11:02:55.02 |
+12:02:39.0 |
HIP 53859 |
26.75 |
| 2026-08-15 12:00 |
11:03:14.04 |
+11:59:50.3 |
HIP 54055 |
31.42 |
| 2026-08-16 00:00 |
11:03:33.10 |
+11:57:01.6 |
HIP 54055 |
27.99 |
| 2026-08-16 12:00 |
11:03:52.18 |
+11:54:12.7 |
HIP 54055 |
25.27 |
| 2026-08-17 00:00 |
11:04:11.30 |
+11:51:23.8 |
HIP 54055 |
23.52 |
| 2026-08-17 12:00 |
11:04:30.44 |
+11:48:34.9 |
HIP 54055 |
22.98 |
| 2026-08-18 00:00 |
11:04:49.61 |
+11:45:45.8 |
HIP 54223 |
23.25 |
| 2026-08-18 12:00 |
11:05:08.82 |
+11:42:56.8 |
HIP 54223 |
23.73 |
| 2026-08-19 00:00 |
11:05:28.05 |
+11:40:07.7 |
HIP 54223 |
25.42 |