메타데이터
| 항목 |
값 |
| Designation |
486P/Leonard |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-04-03T20:04:11.291520Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T11:43:23Z |
| Obs used |
737 |
| NEO |
- |
| M1 |
14.600 |
| K1 |
6.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2018-06-14T10:08:30.048000Z |
| Discovery magnitude (MPC) |
18.50 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-10-21.0000000 |
| e |
0.36396355 |
| q (au) |
2.308216 |
| a (au) |
3.629062 |
| i (deg) |
2.209421 |
| Ω (om, deg) |
219.032259 |
| ω (w, deg) |
93.965161 |
| M (ma, deg) |
284.321405 |
밝기
산란 + 전체 선형
$$
M_a = (11.494 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.494 |
| n |
6.000 |
| gf |
0.885 |
| gb |
-0.806 |
| k |
0.976 |
| δ90 |
1.000 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
02:13:34.72 |
+13:13:58.4 |
HIP 10329 |
13.27 |
| 2026-03-26 12:00 |
02:14:16.05 |
+13:17:21.1 |
HIP 10329 |
22.66 |
| 2026-03-27 00:00 |
02:14:57.42 |
+13:20:43.5 |
HIP 10329 |
32.81 |
| 2026-03-27 12:00 |
02:15:38.80 |
+13:24:05.5 |
HIP 10730 |
35.83 |
| 2026-03-28 00:00 |
02:16:20.22 |
+13:27:27.1 |
HIP 10730 |
25.77 |
| 2026-03-28 12:00 |
02:17:01.66 |
+13:30:48.4 |
HIP 10730 |
16.42 |
| 2026-03-29 00:00 |
02:17:43.12 |
+13:34:09.2 |
HIP 10730 |
10.04 |
| 2026-03-29 12:00 |
02:18:24.61 |
+13:37:29.7 |
HIP 10730 |
12.55 |
| 2026-03-30 00:00 |
02:19:06.12 |
+13:40:49.8 |
HIP 10766 |
17.96 |
| 2026-03-30 12:00 |
02:19:47.66 |
+13:44:09.4 |
HIP 10921 |
13.12 |
| 2026-03-31 00:00 |
02:20:29.22 |
+13:47:28.7 |
HIP 10921 |
7.66 |
| 2026-03-31 12:00 |
02:21:10.80 |
+13:50:47.6 |
HIP 10921 |
13.07 |
| 2026-04-01 00:00 |
02:21:52.40 |
+13:54:06.0 |
HIP 10921 |
22.56 |
| 2026-04-01 12:00 |
02:22:34.03 |
+13:57:24.1 |
HIP 10921 |
32.76 |
| 2026-04-02 00:00 |
02:23:15.68 |
+14:00:41.7 |
HIP 11259 |
33.11 |
| 2026-04-02 12:00 |
02:23:57.34 |
+14:03:58.8 |
HIP 11259 |
29.40 |
| 2026-04-03 00:00 |
02:24:39.04 |
+14:07:15.6 |
HIP 11298 |
27.95 |
| 2026-04-03 12:00 |
02:25:20.75 |
+14:10:31.9 |
HIP 11298 |
22.14 |
| 2026-04-04 00:00 |
02:26:02.48 |
+14:13:47.8 |
HIP 11298 |
20.60 |
| 2026-04-04 12:00 |
02:26:44.23 |
+14:17:03.2 |
HIP 11422 |
20.79 |
| 2026-04-05 00:00 |
02:27:26.00 |
+14:20:18.2 |
HIP 11422 |
22.29 |
| 2026-04-05 12:00 |
02:28:07.79 |
+14:23:32.8 |
HIP 11512 |
22.91 |
| 2026-04-06 00:00 |
02:28:49.60 |
+14:26:46.8 |
HIP 11512 |
20.07 |
| 2026-04-06 12:00 |
02:29:31.43 |
+14:30:00.5 |
HIP 11672 |
20.91 |
| 2026-04-07 00:00 |
02:30:13.28 |
+14:33:13.6 |
HIP 11672 |
18.27 |
| 2026-04-07 12:00 |
02:30:55.15 |
+14:36:26.3 |
HIP 11672 |
21.36 |
| 2026-04-08 00:00 |
02:31:37.03 |
+14:39:38.6 |
HIP 11672 |
28.37 |
| 2026-04-08 12:00 |
02:32:18.93 |
+14:42:50.3 |
HIP 11843 |
21.03 |
| 2026-04-09 00:00 |
02:33:00.85 |
+14:46:01.6 |
HIP 11843 |
16.12 |
| 2026-04-09 12:00 |
02:33:42.79 |
+14:49:12.4 |
HIP 11843 |
17.42 |
| 2026-04-10 00:00 |
02:34:24.74 |
+14:52:22.7 |
HIP 12025 |
21.61 |
| 2026-04-10 12:00 |
02:35:06.71 |
+14:55:32.5 |
HIP 12125 |
20.67 |
| 2026-04-11 00:00 |
02:35:48.69 |
+14:58:41.8 |
HIP 12125 |
11.67 |
| 2026-04-11 12:00 |
02:36:30.69 |
+15:01:50.6 |
HIP 12125 |
8.40 |
| 2026-04-12 00:00 |
02:37:12.70 |
+15:04:58.9 |
HIP 12125 |
15.18 |
| 2026-04-12 12:00 |
02:37:54.73 |
+15:08:06.7 |
HIP 12349 |
22.77 |
| 2026-04-13 00:00 |
02:38:36.78 |
+15:11:14.0 |
HIP 12349 |
20.38 |
| 2026-04-13 12:00 |
02:39:18.83 |
+15:14:20.7 |
HIP 12349 |
23.18 |
| 2026-04-14 00:00 |
02:40:00.90 |
+15:17:27.0 |
HIP 12349 |
29.74 |
| 2026-04-14 12:00 |
02:40:42.98 |
+15:20:32.7 |
HIP 12553 |
21.09 |
| 2026-04-15 00:00 |
02:41:25.08 |
+15:23:37.9 |
HIP 12553 |
14.89 |
| 2026-04-15 12:00 |
02:42:07.18 |
+15:26:42.5 |
HIP 12646 |
14.65 |
| 2026-04-16 00:00 |
02:42:49.30 |
+15:29:46.6 |
HIP 12646 |
17.46 |