메타데이터
| 항목 |
값 |
| Designation |
C/2024 G5 (Leonard) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-09-06T23:37:33.974400Z |
| Orbit solution date (soln_date, UTC) |
2024-05-07T20:12:02Z |
| Obs used |
92 |
| NEO |
- |
| M1 |
10.700 |
| K1 |
14.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-04-05T03:09:00.950400Z |
| Discovery magnitude (MPC) |
20.83 G |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2024-03-23.0000000 |
| e |
0.99442966 |
| q (au) |
2.952917 |
| a (au) |
530.114505 |
| i (deg) |
50.390198 |
| Ω (om, deg) |
316.398824 |
| ω (w, deg) |
209.557081 |
| M (ma, deg) |
359.986435 |
밝기
산란 + 전체 선형
$$
M_a = (9.344 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.344 |
| 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) |
| 2026-06-01 00:00 |
19:09:32.91 |
-68:08:46.8 |
HIP 94154 |
9.41 |
| 2026-06-01 12:00 |
19:09:01.16 |
-68:09:38.3 |
HIP 94154 |
9.68 |
| 2026-06-02 00:00 |
19:08:29.12 |
-68:10:28.1 |
HIP 94154 |
10.90 |
| 2026-06-02 12:00 |
19:07:56.79 |
-68:11:16.0 |
HIP 94154 |
12.79 |
| 2026-06-03 00:00 |
19:07:24.17 |
-68:12:02.2 |
HIP 94154 |
15.12 |
| 2026-06-03 12:00 |
19:06:51.27 |
-68:12:46.5 |
HIP 94154 |
17.73 |
| 2026-06-04 00:00 |
19:06:18.10 |
-68:13:29.0 |
HIP 94154 |
20.52 |
| 2026-06-04 12:00 |
19:05:44.65 |
-68:14:09.6 |
HIP 93650 |
20.73 |
| 2026-06-05 00:00 |
19:05:10.95 |
-68:14:48.4 |
HIP 93650 |
19.07 |
| 2026-06-05 12:00 |
19:04:36.99 |
-68:15:25.2 |
HIP 93454 |
16.48 |
| 2026-06-06 00:00 |
19:04:02.78 |
-68:16:00.1 |
HIP 93454 |
14.03 |
| 2026-06-06 12:00 |
19:03:28.32 |
-68:16:33.1 |
HIP 93454 |
11.92 |
| 2026-06-07 00:00 |
19:02:53.62 |
-68:17:04.1 |
HIP 93454 |
10.37 |
| 2026-06-07 12:00 |
19:02:18.69 |
-68:17:33.2 |
HIP 93454 |
9.67 |
| 2026-06-08 00:00 |
19:01:43.54 |
-68:18:00.2 |
HIP 93454 |
10.02 |
| 2026-06-08 12:00 |
19:01:08.16 |
-68:18:25.3 |
HIP 93454 |
11.34 |
| 2026-06-09 00:00 |
19:00:32.57 |
-68:18:48.3 |
HIP 93454 |
13.35 |
| 2026-06-09 12:00 |
18:59:56.77 |
-68:19:09.3 |
HIP 93454 |
15.79 |
| 2026-06-10 00:00 |
18:59:20.77 |
-68:19:28.2 |
HIP 93454 |
18.51 |
| 2026-06-10 12:00 |
18:58:44.58 |
-68:19:45.0 |
HIP 93454 |
21.41 |
| 2026-06-11 00:00 |
18:58:08.20 |
-68:19:59.8 |
HIP 93454 |
24.42 |
| 2026-06-11 12:00 |
18:57:31.64 |
-68:20:12.4 |
HIP 93454 |
27.52 |
| 2026-06-12 00:00 |
18:56:54.91 |
-68:20:22.9 |
HIP 93454 |
30.68 |
| 2026-06-12 12:00 |
18:56:18.02 |
-68:20:31.3 |
HIP 92722 |
30.95 |
| 2026-06-13 00:00 |
18:55:40.97 |
-68:20:37.6 |
HIP 92722 |
29.42 |
| 2026-06-13 12:00 |
18:55:03.76 |
-68:20:41.7 |
HIP 92722 |
28.25 |
| 2026-06-14 00:00 |
18:54:26.42 |
-68:20:43.6 |
HIP 92722 |
27.49 |
| 2026-06-14 12:00 |
18:53:48.94 |
-68:20:43.3 |
HIP 92722 |
27.18 |
| 2026-06-15 00:00 |
18:53:11.33 |
-68:20:40.9 |
HIP 92722 |
27.33 |
| 2026-06-15 12:00 |
18:52:33.61 |
-68:20:36.2 |
HIP 92722 |
27.94 |
| 2026-06-16 00:00 |
18:51:55.77 |
-68:20:29.3 |
HIP 92722 |
29.00 |
| 2026-06-16 12:00 |
18:51:17.83 |
-68:20:20.2 |
HIP 92722 |
30.45 |
| 2026-06-17 00:00 |
18:50:39.80 |
-68:20:08.9 |
HIP 92722 |
32.24 |
| 2026-06-17 12:00 |
18:50:01.68 |
-68:19:55.3 |
HIP 91968 |
31.46 |
| 2026-06-18 00:00 |
18:49:23.48 |
-68:19:39.5 |
HIP 91968 |
28.35 |
| 2026-06-18 12:00 |
18:48:45.21 |
-68:19:21.4 |
HIP 91968 |
25.36 |
| 2026-06-19 00:00 |
18:48:06.88 |
-68:19:01.1 |
HIP 91968 |
22.55 |
| 2026-06-19 12:00 |
18:47:28.49 |
-68:18:38.5 |
HIP 91968 |
19.99 |
| 2026-06-20 00:00 |
18:46:50.06 |
-68:18:13.6 |
HIP 91968 |
17.79 |
| 2026-06-20 12:00 |
18:46:11.59 |
-68:17:46.5 |
HIP 91968 |
16.12 |
| 2026-06-21 00:00 |
18:45:33.09 |
-68:17:17.1 |
HIP 91968 |
15.16 |
| 2026-06-21 12:00 |
18:44:54.57 |
-68:16:45.4 |
HIP 91968 |
15.04 |
| 2026-06-22 00:00 |
18:44:16.03 |
-68:16:11.5 |
HIP 91968 |
15.80 |