메타데이터
| 항목 |
값 |
| Designation |
P/2022 C2 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-08-06T14:14:16.523520Z |
| Orbit solution date (soln_date, UTC) |
2023-11-12T20:43:31Z |
| Obs used |
255 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
18.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-02-02T13:07:46.243200Z |
| Discovery magnitude (MPC) |
20.84 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-04-22.0000000 |
| e |
0.44280537 |
| q (au) |
3.370418 |
| a (au) |
6.048907 |
| i (deg) |
9.979754 |
| Ω (om, deg) |
135.274414 |
| ω (w, deg) |
89.300280 |
| M (ma, deg) |
352.938151 |
밝기
산란 + 전체 선형
$$
M_a = (7.861 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.861 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.869 |
| 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) |
| 2026-05-12 00:00 |
00:32:43.20 |
-03:31:54.3 |
HIP 2612 |
20.22 |
| 2026-05-12 12:00 |
00:32:57.82 |
-03:30:48.0 |
HIP 2612 |
20.35 |
| 2026-05-13 00:00 |
00:33:12.37 |
-03:29:42.3 |
HIP 2612 |
21.17 |
| 2026-05-13 12:00 |
00:33:26.87 |
-03:28:37.2 |
HIP 2612 |
22.59 |
| 2026-05-14 00:00 |
00:33:41.29 |
-03:27:32.7 |
HIP 2612 |
24.50 |
| 2026-05-14 12:00 |
00:33:55.65 |
-03:26:28.8 |
HIP 2762 |
21.70 |
| 2026-05-15 00:00 |
00:34:09.95 |
-03:25:25.5 |
HIP 2762 |
19.06 |
| 2026-05-15 12:00 |
00:34:24.18 |
-03:24:22.9 |
HIP 2762 |
16.84 |
| 2026-05-16 00:00 |
00:34:38.34 |
-03:23:20.8 |
HIP 2762 |
15.21 |
| 2026-05-16 12:00 |
00:34:52.44 |
-03:22:19.3 |
HIP 2762 |
14.36 |
| 2026-05-17 00:00 |
00:35:06.47 |
-03:21:18.5 |
HIP 2762 |
14.40 |
| 2026-05-17 12:00 |
00:35:20.43 |
-03:20:18.3 |
HIP 2762 |
15.33 |
| 2026-05-18 00:00 |
00:35:34.32 |
-03:19:18.7 |
HIP 2762 |
16.98 |
| 2026-05-18 12:00 |
00:35:48.15 |
-03:18:19.7 |
HIP 2917 |
18.06 |
| 2026-05-19 00:00 |
00:36:01.90 |
-03:17:21.4 |
HIP 2917 |
15.24 |
| 2026-05-19 12:00 |
00:36:15.58 |
-03:16:23.7 |
HIP 2917 |
12.81 |
| 2026-05-20 00:00 |
00:36:29.19 |
-03:15:26.6 |
HIP 2917 |
11.01 |
| 2026-05-20 12:00 |
00:36:42.72 |
-03:14:30.2 |
HIP 2917 |
10.16 |
| 2026-05-21 00:00 |
00:36:56.19 |
-03:13:34.4 |
HIP 2917 |
10.47 |
| 2026-05-21 12:00 |
00:37:09.58 |
-03:12:39.3 |
HIP 2917 |
11.82 |
| 2026-05-22 00:00 |
00:37:22.90 |
-03:11:44.8 |
HIP 2917 |
13.91 |
| 2026-05-22 12:00 |
00:37:36.14 |
-03:10:51.0 |
HIP 2917 |
16.45 |
| 2026-05-23 00:00 |
00:37:49.31 |
-03:09:57.8 |
HIP 2917 |
19.24 |
| 2026-05-23 12:00 |
00:38:02.41 |
-03:09:05.2 |
HIP 2917 |
22.18 |
| 2026-05-24 00:00 |
00:38:15.43 |
-03:08:13.4 |
HIP 3115 |
20.92 |
| 2026-05-24 12:00 |
00:38:28.37 |
-03:07:22.2 |
HIP 3115 |
17.60 |
| 2026-05-25 00:00 |
00:38:41.24 |
-03:06:31.6 |
HIP 3115 |
14.31 |
| 2026-05-25 12:00 |
00:38:54.03 |
-03:05:41.7 |
HIP 3115 |
11.06 |
| 2026-05-26 00:00 |
00:39:06.74 |
-03:04:52.5 |
HIP 3115 |
7.86 |
| 2026-05-26 12:00 |
00:39:19.38 |
-03:04:04.0 |
HIP 3115 |
4.80 |
| 2026-05-27 00:00 |
00:39:31.93 |
-03:03:16.1 |
HIP 3115 |
2.33 |
| 2026-05-27 12:00 |
00:39:44.41 |
-03:02:28.9 |
HIP 3115 |
2.94 |
| 2026-05-28 00:00 |
00:39:56.81 |
-03:01:42.4 |
HIP 3115 |
5.68 |
| 2026-05-28 12:00 |
00:40:09.13 |
-03:00:56.6 |
HIP 3115 |
8.71 |
| 2026-05-29 00:00 |
00:40:21.36 |
-03:00:11.4 |
HIP 3115 |
11.79 |
| 2026-05-29 12:00 |
00:40:33.52 |
-02:59:26.9 |
HIP 3115 |
14.87 |
| 2026-05-30 00:00 |
00:40:45.60 |
-02:58:43.2 |
HIP 3152 |
16.09 |
| 2026-05-30 12:00 |
00:40:57.59 |
-02:58:00.1 |
HIP 3152 |
17.63 |
| 2026-05-31 00:00 |
00:41:09.50 |
-02:57:17.7 |
HIP 3311 |
16.21 |
| 2026-05-31 12:00 |
00:41:21.33 |
-02:56:35.9 |
HIP 3311 |
13.84 |
| 2026-06-01 00:00 |
00:41:33.07 |
-02:55:54.9 |
HIP 3311 |
11.79 |
| 2026-06-01 12:00 |
00:41:44.73 |
-02:55:14.6 |
HIP 3311 |
10.23 |
| 2026-06-02 00:00 |
00:41:56.31 |
-02:54:35.0 |
HIP 3311 |
9.39 |