메타데이터
| 항목 |
값 |
| Designation |
363P/Lemmon |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-03-22T13:30:17.461440Z |
| Orbit solution date (soln_date, UTC) |
2025-04-11T14:45:16Z |
| Obs used |
124 |
| NEO |
- |
| M1 |
17.300 |
| K1 |
12.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-09-25.0000000 |
| e |
0.55752671 |
| q (au) |
1.506711 |
| a (au) |
3.405202 |
| i (deg) |
3.974829 |
| Ω (om, deg) |
169.924921 |
| ω (w, deg) |
315.265579 |
| M (ma, deg) |
217.333360 |
밝기
산란 + 전체 선형
$$
M_a = (16.388 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.388 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-07-29 00:00 |
17:19:32.62 |
-17:36:46.8 |
HIP 84792 |
9.92 |
| 2026-07-29 12:00 |
17:19:22.51 |
-17:37:17.2 |
HIP 84792 |
10.94 |
| 2026-07-30 00:00 |
17:19:12.62 |
-17:37:47.9 |
HIP 84792 |
12.32 |
| 2026-07-30 12:00 |
17:19:02.98 |
-17:38:18.9 |
HIP 84792 |
13.93 |
| 2026-07-31 00:00 |
17:18:53.57 |
-17:38:50.2 |
HIP 84792 |
15.67 |
| 2026-07-31 12:00 |
17:18:44.40 |
-17:39:21.9 |
HIP 84792 |
17.49 |
| 2026-08-01 00:00 |
17:18:35.47 |
-17:39:53.8 |
HIP 84792 |
19.34 |
| 2026-08-01 12:00 |
17:18:26.77 |
-17:40:26.1 |
HIP 84792 |
21.21 |
| 2026-08-02 00:00 |
17:18:18.31 |
-17:40:58.6 |
HIP 84792 |
23.06 |
| 2026-08-02 12:00 |
17:18:10.10 |
-17:41:31.4 |
HIP 84545 |
23.88 |
| 2026-08-03 00:00 |
17:18:02.12 |
-17:42:04.6 |
HIP 84545 |
22.19 |
| 2026-08-03 12:00 |
17:17:54.38 |
-17:42:38.0 |
HIP 84545 |
20.58 |
| 2026-08-04 00:00 |
17:17:46.89 |
-17:43:11.8 |
HIP 84526 |
18.94 |
| 2026-08-04 12:00 |
17:17:39.63 |
-17:43:45.8 |
HIP 84526 |
17.24 |
| 2026-08-05 00:00 |
17:17:32.61 |
-17:44:20.1 |
HIP 84526 |
15.61 |
| 2026-08-05 12:00 |
17:17:25.84 |
-17:44:54.7 |
HIP 84526 |
14.05 |
| 2026-08-06 00:00 |
17:17:19.31 |
-17:45:29.6 |
HIP 84526 |
12.56 |
| 2026-08-06 12:00 |
17:17:13.01 |
-17:46:04.8 |
HIP 84526 |
11.15 |
| 2026-08-07 00:00 |
17:17:06.96 |
-17:46:40.3 |
HIP 84526 |
9.83 |
| 2026-08-07 12:00 |
17:17:01.16 |
-17:47:16.1 |
HIP 84526 |
8.61 |
| 2026-08-08 00:00 |
17:16:55.59 |
-17:47:52.1 |
HIP 84526 |
7.51 |
| 2026-08-08 12:00 |
17:16:50.27 |
-17:48:28.4 |
HIP 84526 |
6.56 |
| 2026-08-09 00:00 |
17:16:45.19 |
-17:49:05.0 |
HIP 84526 |
5.80 |
| 2026-08-09 12:00 |
17:16:40.35 |
-17:49:41.9 |
HIP 84526 |
5.26 |
| 2026-08-10 00:00 |
17:16:35.76 |
-17:50:19.0 |
HIP 84526 |
4.98 |
| 2026-08-10 12:00 |
17:16:31.41 |
-17:50:56.5 |
HIP 84526 |
4.98 |
| 2026-08-11 00:00 |
17:16:27.30 |
-17:51:34.1 |
HIP 84526 |
5.21 |
| 2026-08-11 12:00 |
17:16:23.44 |
-17:52:12.1 |
HIP 84509 |
5.39 |
| 2026-08-12 00:00 |
17:16:19.82 |
-17:52:50.2 |
HIP 84509 |
5.41 |
| 2026-08-12 12:00 |
17:16:16.44 |
-17:53:28.7 |
HIP 84509 |
5.59 |
| 2026-08-13 00:00 |
17:16:13.30 |
-17:54:07.4 |
HIP 84509 |
5.88 |
| 2026-08-13 12:00 |
17:16:10.41 |
-17:54:46.3 |
HIP 84509 |
6.27 |
| 2026-08-14 00:00 |
17:16:07.76 |
-17:55:25.5 |
HIP 84509 |
6.71 |
| 2026-08-14 12:00 |
17:16:05.36 |
-17:56:05.0 |
HIP 84509 |
7.17 |
| 2026-08-15 00:00 |
17:16:03.19 |
-17:56:44.6 |
HIP 84509 |
7.65 |
| 2026-08-15 12:00 |
17:16:01.27 |
-17:57:24.5 |
HIP 84509 |
8.13 |
| 2026-08-16 00:00 |
17:15:59.58 |
-17:58:04.7 |
HIP 84509 |
8.61 |
| 2026-08-16 12:00 |
17:15:58.14 |
-17:58:45.0 |
HIP 84509 |
9.07 |
| 2026-08-17 00:00 |
17:15:56.94 |
-17:59:25.6 |
HIP 84509 |
9.51 |
| 2026-08-17 12:00 |
17:15:55.97 |
-18:00:06.4 |
HIP 84509 |
9.94 |
| 2026-08-18 00:00 |
17:15:55.25 |
-18:00:47.4 |
HIP 84509 |
10.35 |
| 2026-08-18 12:00 |
17:15:54.76 |
-18:01:28.6 |
HIP 84509 |
10.74 |
| 2026-08-19 00:00 |
17:15:54.51 |
-18:02:10.1 |
HIP 84509 |
11.11 |