메타데이터
| 항목 |
값 |
| Designation |
P/2022 R5 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-05-27T20:48:27.054720Z |
| Orbit solution date (soln_date, UTC) |
2022-11-29T21:43:49Z |
| Obs used |
47 |
| NEO |
- |
| M1 |
15.800 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-09-08T14:25:00.393600Z |
| Discovery magnitude (MPC) |
21.35 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-10-13.0000000 |
| e |
0.19578965 |
| q (au) |
2.469627 |
| a (au) |
3.070872 |
| i (deg) |
15.291928 |
| Ω (om, deg) |
115.067048 |
| ω (w, deg) |
240.680778 |
| M (ma, deg) |
25.299334 |
밝기
산란 + 전체 선형
$$
M_a = (14.907 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.907 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.559 |
| 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) |
| 2026-03-26 00:00 |
16:38:57.28 |
-05:36:42.0 |
HIP 81509 |
30.00 |
| 2026-03-26 12:00 |
16:39:01.95 |
-05:35:11.5 |
HIP 81509 |
31.56 |
| 2026-03-27 00:00 |
16:39:06.32 |
-05:33:40.6 |
HIP 81509 |
33.15 |
| 2026-03-27 12:00 |
16:39:10.38 |
-05:32:09.2 |
HIP 81465 |
33.40 |
| 2026-03-28 00:00 |
16:39:14.13 |
-05:30:37.4 |
HIP 81465 |
32.37 |
| 2026-03-28 12:00 |
16:39:17.58 |
-05:29:05.1 |
HIP 81465 |
31.36 |
| 2026-03-29 00:00 |
16:39:20.72 |
-05:27:32.5 |
HIP 81465 |
30.39 |
| 2026-03-29 12:00 |
16:39:23.56 |
-05:25:59.4 |
HIP 81465 |
29.43 |
| 2026-03-30 00:00 |
16:39:26.09 |
-05:24:25.9 |
HIP 81465 |
28.49 |
| 2026-03-30 12:00 |
16:39:28.31 |
-05:22:52.0 |
HIP 81465 |
27.57 |
| 2026-03-31 00:00 |
16:39:30.21 |
-05:21:17.8 |
HIP 81465 |
26.67 |
| 2026-03-31 12:00 |
16:39:31.81 |
-05:19:43.2 |
HIP 81465 |
25.78 |
| 2026-04-01 00:00 |
16:39:33.10 |
-05:18:08.3 |
HIP 81465 |
24.90 |
| 2026-04-01 12:00 |
16:39:34.07 |
-05:16:33.0 |
HIP 81465 |
24.04 |
| 2026-04-02 00:00 |
16:39:34.73 |
-05:14:57.5 |
HIP 81465 |
23.19 |
| 2026-04-02 12:00 |
16:39:35.08 |
-05:13:21.7 |
HIP 81465 |
22.36 |
| 2026-04-03 00:00 |
16:39:35.11 |
-05:11:45.6 |
HIP 81465 |
21.54 |
| 2026-04-03 12:00 |
16:39:34.82 |
-05:10:09.2 |
HIP 81465 |
20.74 |
| 2026-04-04 00:00 |
16:39:34.22 |
-05:08:32.6 |
HIP 81465 |
19.96 |
| 2026-04-04 12:00 |
16:39:33.30 |
-05:06:55.7 |
HIP 81465 |
19.21 |
| 2026-04-05 00:00 |
16:39:32.07 |
-05:05:18.7 |
HIP 81465 |
18.49 |
| 2026-04-05 12:00 |
16:39:30.52 |
-05:03:41.4 |
HIP 81465 |
17.82 |
| 2026-04-06 00:00 |
16:39:28.64 |
-05:02:04.0 |
HIP 81465 |
17.20 |
| 2026-04-06 12:00 |
16:39:26.45 |
-05:00:26.4 |
HIP 81465 |
16.66 |
| 2026-04-07 00:00 |
16:39:23.94 |
-04:58:48.7 |
HIP 81465 |
16.20 |
| 2026-04-07 12:00 |
16:39:21.11 |
-04:57:10.8 |
HIP 81465 |
15.84 |
| 2026-04-08 00:00 |
16:39:17.96 |
-04:55:32.9 |
HIP 81465 |
15.60 |
| 2026-04-08 12:00 |
16:39:14.49 |
-04:53:54.8 |
HIP 81465 |
15.50 |
| 2026-04-09 00:00 |
16:39:10.70 |
-04:52:16.7 |
HIP 81465 |
15.55 |
| 2026-04-09 12:00 |
16:39:06.58 |
-04:50:38.6 |
HIP 81465 |
15.78 |
| 2026-04-10 00:00 |
16:39:02.15 |
-04:49:00.4 |
HIP 81473 |
16.10 |
| 2026-04-10 12:00 |
16:38:57.39 |
-04:47:22.2 |
HIP 81473 |
14.08 |
| 2026-04-11 00:00 |
16:38:52.31 |
-04:45:44.0 |
HIP 81473 |
12.03 |
| 2026-04-11 12:00 |
16:38:46.91 |
-04:44:05.9 |
HIP 81473 |
9.93 |
| 2026-04-12 00:00 |
16:38:41.19 |
-04:42:27.8 |
HIP 81473 |
7.81 |
| 2026-04-12 12:00 |
16:38:35.14 |
-04:40:49.7 |
HIP 81473 |
5.70 |
| 2026-04-13 00:00 |
16:38:28.77 |
-04:39:11.8 |
HIP 81473 |
3.72 |
| 2026-04-13 12:00 |
16:38:22.09 |
-04:37:34.0 |
HIP 81473 |
2.39 |
| 2026-04-14 00:00 |
16:38:15.08 |
-04:35:56.3 |
HIP 81473 |
2.99 |
| 2026-04-14 12:00 |
16:38:07.75 |
-04:34:18.8 |
HIP 81473 |
4.93 |
| 2026-04-15 00:00 |
16:38:00.10 |
-04:32:41.5 |
HIP 81473 |
7.26 |
| 2026-04-15 12:00 |
16:37:52.14 |
-04:31:04.3 |
HIP 81473 |
9.74 |
| 2026-04-16 00:00 |
16:37:43.85 |
-04:29:27.4 |
HIP 81473 |
12.32 |