메타데이터
| 항목 |
값 |
| Designation |
P/2019 LM4 (Palomar) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-06-18T05:44:43.520640Z |
| Orbit solution date (soln_date, UTC) |
2024-12-26T20:12:37Z |
| Obs used |
248 |
| NEO |
- |
| M1 |
13.400 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-04-23.0000000 |
| e |
0.58520723 |
| q (au) |
2.371614 |
| a (au) |
5.717588 |
| i (deg) |
36.394763 |
| Ω (om, deg) |
72.858371 |
| ω (w, deg) |
68.371061 |
| M (ma, deg) |
22.331143 |
밝기
산란 + 전체 선형
$$
M_a = (7.257 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.257 |
| n |
6.000 |
| gf |
0.933 |
| gb |
-1.000 |
| k |
0.999 |
| δ90 |
5.833 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
22:49:07.63 |
-44:16:12.6 |
HIP 112735 |
12.05 |
| 2026-05-12 12:00 |
22:49:17.20 |
-44:17:29.2 |
HIP 112735 |
9.98 |
| 2026-05-13 00:00 |
22:49:26.66 |
-44:18:46.6 |
HIP 112735 |
7.95 |
| 2026-05-13 12:00 |
22:49:36.00 |
-44:20:04.9 |
HIP 112735 |
5.98 |
| 2026-05-14 00:00 |
22:49:45.24 |
-44:21:24.1 |
HIP 112735 |
4.15 |
| 2026-05-14 12:00 |
22:49:54.35 |
-44:22:44.1 |
HIP 112735 |
2.74 |
| 2026-05-15 00:00 |
22:50:03.35 |
-44:24:05.0 |
HIP 112735 |
2.55 |
| 2026-05-15 12:00 |
22:50:12.24 |
-44:25:26.8 |
HIP 112735 |
3.77 |
| 2026-05-16 00:00 |
22:50:21.01 |
-44:26:49.5 |
HIP 112735 |
5.51 |
| 2026-05-16 12:00 |
22:50:29.65 |
-44:28:12.9 |
HIP 112735 |
7.42 |
| 2026-05-17 00:00 |
22:50:38.18 |
-44:29:37.3 |
HIP 112735 |
9.39 |
| 2026-05-17 12:00 |
22:50:46.60 |
-44:31:02.5 |
HIP 112735 |
11.38 |
| 2026-05-18 00:00 |
22:50:54.89 |
-44:32:28.5 |
HIP 112735 |
13.38 |
| 2026-05-18 12:00 |
22:51:03.06 |
-44:33:55.4 |
HIP 112735 |
15.39 |
| 2026-05-19 00:00 |
22:51:11.11 |
-44:35:23.1 |
HIP 112735 |
17.40 |
| 2026-05-19 12:00 |
22:51:19.03 |
-44:36:51.6 |
HIP 112735 |
19.40 |
| 2026-05-20 00:00 |
22:51:26.84 |
-44:38:20.9 |
HIP 112995 |
21.30 |
| 2026-05-20 12:00 |
22:51:34.52 |
-44:39:51.1 |
HIP 112995 |
19.30 |
| 2026-05-21 00:00 |
22:51:42.08 |
-44:41:22.1 |
HIP 112995 |
17.32 |
| 2026-05-21 12:00 |
22:51:49.51 |
-44:42:53.9 |
HIP 112995 |
15.36 |
| 2026-05-22 00:00 |
22:51:56.82 |
-44:44:26.5 |
HIP 112995 |
13.43 |
| 2026-05-22 12:00 |
22:52:04.00 |
-44:46:00.0 |
HIP 112995 |
11.54 |
| 2026-05-23 00:00 |
22:52:11.06 |
-44:47:34.1 |
HIP 112995 |
9.72 |
| 2026-05-23 12:00 |
22:52:18.00 |
-44:49:09.1 |
HIP 112995 |
8.01 |
| 2026-05-24 00:00 |
22:52:24.80 |
-44:50:44.9 |
HIP 112995 |
6.48 |
| 2026-05-24 12:00 |
22:52:31.48 |
-44:52:21.4 |
HIP 112995 |
5.32 |
| 2026-05-25 00:00 |
22:52:38.03 |
-44:53:58.7 |
HIP 112995 |
4.77 |
| 2026-05-25 12:00 |
22:52:44.46 |
-44:55:36.8 |
HIP 112995 |
5.04 |
| 2026-05-26 00:00 |
22:52:50.75 |
-44:57:15.6 |
HIP 112995 |
6.02 |
| 2026-05-26 12:00 |
22:52:56.92 |
-44:58:55.2 |
HIP 112995 |
7.43 |
| 2026-05-27 00:00 |
22:53:02.95 |
-45:00:35.6 |
HIP 113018 |
8.56 |
| 2026-05-27 12:00 |
22:53:08.86 |
-45:02:16.7 |
HIP 113018 |
6.69 |
| 2026-05-28 00:00 |
22:53:14.63 |
-45:03:58.5 |
HIP 113018 |
4.89 |
| 2026-05-28 12:00 |
22:53:20.28 |
-45:05:41.1 |
HIP 113018 |
3.29 |
| 2026-05-29 00:00 |
22:53:25.79 |
-45:07:24.4 |
HIP 113018 |
2.33 |
| 2026-05-29 12:00 |
22:53:31.17 |
-45:09:08.4 |
HIP 113018 |
2.78 |
| 2026-05-30 00:00 |
22:53:36.42 |
-45:10:53.1 |
HIP 113018 |
4.21 |
| 2026-05-30 12:00 |
22:53:41.53 |
-45:12:38.6 |
HIP 113061 |
5.73 |
| 2026-05-31 00:00 |
22:53:46.51 |
-45:14:24.7 |
HIP 113061 |
7.38 |
| 2026-05-31 12:00 |
22:53:51.36 |
-45:16:11.6 |
HIP 113061 |
9.17 |
| 2026-06-01 00:00 |
22:53:56.07 |
-45:17:59.2 |
HIP 113061 |
11.03 |
| 2026-06-01 12:00 |
22:54:00.65 |
-45:19:47.4 |
HIP 113061 |
12.94 |
| 2026-06-02 00:00 |
22:54:05.09 |
-45:21:36.3 |
HIP 113061 |
14.86 |