P/2019 LM4 (Palomar)
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) |
| 2026-02-03 00:00 |
21:55:16.42 |
-44:40:34.6 |
HIP 108194 |
1.38 |
| 2026-02-03 12:00 |
21:55:35.63 |
-44:39:17.0 |
HIP 108194 |
4.91 |
| 2026-02-04 00:00 |
21:55:54.86 |
-44:38:00.0 |
HIP 108194 |
8.54 |
| 2026-02-04 12:00 |
21:56:14.10 |
-44:36:43.6 |
HIP 108194 |
12.19 |
| 2026-02-05 00:00 |
21:56:33.35 |
-44:35:27.6 |
HIP 108194 |
15.84 |
| 2026-02-05 12:00 |
21:56:52.62 |
-44:34:12.2 |
HIP 108337 |
15.44 |
| 2026-02-06 00:00 |
21:57:11.89 |
-44:32:57.3 |
HIP 108337 |
14.47 |
| 2026-02-06 12:00 |
21:57:31.19 |
-44:31:43.0 |
HIP 108337 |
14.40 |
| 2026-02-07 00:00 |
21:57:50.49 |
-44:30:29.2 |
HIP 108337 |
15.25 |
| 2026-02-07 12:00 |
21:58:09.80 |
-44:29:15.9 |
HIP 108475 |
16.44 |
| 2026-02-08 00:00 |
21:58:29.12 |
-44:28:03.2 |
HIP 108475 |
17.30 |
| 2026-02-08 12:00 |
21:58:48.46 |
-44:26:51.0 |
HIP 108475 |
18.82 |
| 2026-02-09 00:00 |
21:59:07.80 |
-44:25:39.4 |
HIP 108665 |
18.76 |
| 2026-02-09 12:00 |
21:59:27.15 |
-44:24:28.4 |
HIP 108665 |
15.55 |
| 2026-02-10 00:00 |
21:59:46.51 |
-44:23:17.9 |
HIP 108665 |
12.56 |
| 2026-02-10 12:00 |
22:00:05.87 |
-44:22:07.9 |
HIP 108665 |
10.02 |
| 2026-02-11 00:00 |
22:00:25.24 |
-44:20:58.6 |
HIP 108665 |
8.33 |
| 2026-02-11 12:00 |
22:00:44.61 |
-44:19:49.8 |
HIP 108665 |
8.05 |
| 2026-02-12 00:00 |
22:01:03.99 |
-44:18:41.6 |
HIP 108665 |
9.31 |
| 2026-02-12 12:00 |
22:01:23.37 |
-44:17:34.0 |
HIP 108665 |
11.61 |
| 2026-02-13 00:00 |
22:01:42.76 |
-44:16:27.0 |
HIP 108665 |
14.47 |
| 2026-02-13 12:00 |
22:02:02.15 |
-44:15:20.5 |
HIP 108665 |
17.62 |
| 2026-02-14 00:00 |
22:02:21.54 |
-44:14:14.7 |
HIP 108913 |
18.43 |
| 2026-02-14 12:00 |
22:02:40.93 |
-44:13:09.4 |
HIP 108913 |
15.07 |
| 2026-02-15 00:00 |
22:03:00.32 |
-44:12:04.7 |
HIP 108913 |
11.87 |
| 2026-02-15 12:00 |
22:03:19.71 |
-44:11:00.7 |
HIP 108913 |
9.03 |
| 2026-02-16 00:00 |
22:03:39.10 |
-44:09:57.3 |
HIP 108913 |
6.98 |
| 2026-02-16 12:00 |
22:03:58.48 |
-44:08:54.4 |
HIP 108913 |
6.51 |
| 2026-02-17 00:00 |
22:04:17.87 |
-44:07:52.2 |
HIP 108913 |
7.92 |
| 2026-02-17 12:00 |
22:04:37.25 |
-44:06:50.6 |
HIP 108913 |
10.46 |
| 2026-02-18 00:00 |
22:04:56.62 |
-44:05:49.6 |
HIP 108913 |
13.52 |
| 2026-02-18 12:00 |
22:05:15.99 |
-44:04:49.3 |
HIP 109108 |
11.04 |
| 2026-02-19 00:00 |
22:05:35.36 |
-44:03:49.6 |
HIP 109108 |
7.82 |
| 2026-02-19 12:00 |
22:05:54.72 |
-44:02:50.5 |
HIP 109108 |
5.16 |
| 2026-02-20 00:00 |
22:06:14.07 |
-44:01:52.1 |
HIP 109108 |
4.29 |
| 2026-02-20 12:00 |
22:06:33.41 |
-44:00:54.2 |
HIP 109108 |
6.03 |
| 2026-02-21 00:00 |
22:06:52.74 |
-43:59:57.1 |
HIP 109108 |
8.97 |
| 2026-02-21 12:00 |
22:07:12.07 |
-43:59:00.6 |
HIP 109108 |
12.27 |
| 2026-02-22 00:00 |
22:07:31.38 |
-43:58:04.7 |
HIP 109288 |
11.08 |
| 2026-02-22 12:00 |
22:07:50.69 |
-43:57:09.5 |
HIP 109288 |
8.84 |
| 2026-02-23 00:00 |
22:08:09.98 |
-43:56:15.0 |
HIP 109288 |
7.70 |
| 2026-02-23 12:00 |
22:08:29.26 |
-43:55:21.1 |
HIP 109288 |
8.12 |
| 2026-02-24 00:00 |
22:08:48.52 |
-43:54:27.9 |
HIP 109288 |
9.90 |