메타데이터
| 항목 |
값 |
| Designation |
P/2022 D1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2021-08-28T02:02:35.586240Z |
| Orbit solution date (soln_date, UTC) |
2022-05-19T21:13:41Z |
| Obs used |
97 |
| NEO |
- |
| M1 |
15.900 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-02-24T13:16:06.585600Z |
| Discovery magnitude (MPC) |
20.71 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-03-09.0000000 |
| e |
0.54702589 |
| q (au) |
3.352561 |
| a (au) |
7.401219 |
| i (deg) |
44.064028 |
| Ω (om, deg) |
47.965841 |
| ω (w, deg) |
88.712500 |
| M (ma, deg) |
9.443106 |
밝기
산란 + 전체 선형
$$
M_a = (19.752 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
19.752 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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 |
18:06:22.28 |
-59:02:38.8 |
HIP 88775 |
9.14 |
| 2026-06-01 12:00 |
18:06:02.62 |
-59:03:50.7 |
HIP 88775 |
11.92 |
| 2026-06-02 00:00 |
18:05:42.85 |
-59:05:01.5 |
HIP 88531 |
10.78 |
| 2026-06-02 12:00 |
18:05:22.97 |
-59:06:11.1 |
HIP 88531 |
8.20 |
| 2026-06-03 00:00 |
18:05:02.99 |
-59:07:19.5 |
HIP 88512 |
5.73 |
| 2026-06-03 12:00 |
18:04:42.90 |
-59:08:26.8 |
HIP 88512 |
3.04 |
| 2026-06-04 00:00 |
18:04:22.72 |
-59:09:33.0 |
HIP 88512 |
1.24 |
| 2026-06-04 12:00 |
18:04:02.44 |
-59:10:37.9 |
HIP 88512 |
3.11 |
| 2026-06-05 00:00 |
18:03:42.06 |
-59:11:41.7 |
HIP 88512 |
5.81 |
| 2026-06-05 12:00 |
18:03:21.59 |
-59:12:44.2 |
HIP 88512 |
8.59 |
| 2026-06-06 00:00 |
18:03:01.03 |
-59:13:45.6 |
HIP 88512 |
11.40 |
| 2026-06-06 12:00 |
18:02:40.38 |
-59:14:45.8 |
HIP 88512 |
14.21 |
| 2026-06-07 00:00 |
18:02:19.65 |
-59:15:44.8 |
HIP 88512 |
17.03 |
| 2026-06-07 12:00 |
18:01:58.83 |
-59:16:42.5 |
HIP 88400 |
19.16 |
| 2026-06-08 00:00 |
18:01:37.94 |
-59:17:39.0 |
HIP 88400 |
21.26 |
| 2026-06-08 12:00 |
18:01:16.97 |
-59:18:34.3 |
HIP 88400 |
23.51 |
| 2026-06-09 00:00 |
18:00:55.93 |
-59:19:28.4 |
HIP 88400 |
25.86 |
| 2026-06-09 12:00 |
18:00:34.81 |
-59:20:21.2 |
HIP 87963 |
23.74 |
| 2026-06-10 00:00 |
18:00:13.63 |
-59:21:12.8 |
HIP 87963 |
21.10 |
| 2026-06-10 12:00 |
17:59:52.39 |
-59:22:03.2 |
HIP 87963 |
18.53 |
| 2026-06-11 00:00 |
17:59:31.08 |
-59:22:52.3 |
HIP 87963 |
16.06 |
| 2026-06-11 12:00 |
17:59:09.71 |
-59:23:40.1 |
HIP 87963 |
13.73 |
| 2026-06-12 00:00 |
17:58:48.29 |
-59:24:26.6 |
HIP 87963 |
11.65 |
| 2026-06-12 12:00 |
17:58:26.81 |
-59:25:11.9 |
HIP 87963 |
9.96 |
| 2026-06-13 00:00 |
17:58:05.29 |
-59:25:56.0 |
HIP 87963 |
8.89 |
| 2026-06-13 12:00 |
17:57:43.72 |
-59:26:38.7 |
HIP 87963 |
8.68 |
| 2026-06-14 00:00 |
17:57:22.10 |
-59:27:20.2 |
HIP 87963 |
9.38 |
| 2026-06-14 12:00 |
17:57:00.44 |
-59:28:00.4 |
HIP 87963 |
10.81 |
| 2026-06-15 00:00 |
17:56:38.75 |
-59:28:39.3 |
HIP 87963 |
12.73 |
| 2026-06-15 12:00 |
17:56:17.02 |
-59:29:16.9 |
HIP 87963 |
14.96 |
| 2026-06-16 00:00 |
17:55:55.27 |
-59:29:53.2 |
HIP 87963 |
17.36 |
| 2026-06-16 12:00 |
17:55:33.48 |
-59:30:28.2 |
HIP 87963 |
19.89 |
| 2026-06-17 00:00 |
17:55:11.68 |
-59:31:02.0 |
HIP 87963 |
22.49 |
| 2026-06-17 12:00 |
17:54:49.85 |
-59:31:34.4 |
HIP 87963 |
25.14 |
| 2026-06-18 00:00 |
17:54:28.00 |
-59:32:05.6 |
HIP 87450 |
27.61 |
| 2026-06-18 12:00 |
17:54:06.14 |
-59:32:35.4 |
HIP 87450 |
26.29 |
| 2026-06-19 00:00 |
17:53:44.27 |
-59:33:04.0 |
HIP 87450 |
25.21 |
| 2026-06-19 12:00 |
17:53:22.39 |
-59:33:31.2 |
HIP 87450 |
24.38 |
| 2026-06-20 00:00 |
17:53:00.51 |
-59:33:57.2 |
HIP 87450 |
23.84 |
| 2026-06-20 12:00 |
17:52:38.62 |
-59:34:21.9 |
HIP 87450 |
23.61 |
| 2026-06-21 00:00 |
17:52:16.74 |
-59:34:45.3 |
HIP 87450 |
23.69 |
| 2026-06-21 12:00 |
17:51:54.86 |
-59:35:07.3 |
HIP 87450 |
24.08 |
| 2026-06-22 00:00 |
17:51:32.99 |
-59:35:28.1 |
HIP 87203 |
23.21 |