C/2023 H5 (Lemmon)
메타데이터
| 항목 |
값 |
| Designation |
C/2023 H5 (Lemmon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-06-30T04:57:14.748480Z |
| Orbit solution date (soln_date, UTC) |
2026-01-07T15:42:42Z |
| Obs used |
2565 |
| NEO |
- |
| M1 |
8.600 |
| K1 |
7.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2023-04-19T04:23:52.540800Z |
| Discovery magnitude (MPC) |
20.29 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-01-01.0000000 |
| e |
1.00038421 |
| q (au) |
4.312704 |
| a (au) |
-11224.731860 |
| i (deg) |
97.857209 |
| Ω (om, deg) |
159.479984 |
| ω (w, deg) |
60.088043 |
| M (ma, deg) |
-0.000149 |
밝기
산란 + 전체 선형
$$
M_a = (9.611 + 4.031\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.611 |
| n |
4.031 |
| gf |
1.000 |
| gb |
-0.734 |
| k |
0.800 |
| δ90 |
9.998 |
| 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 |
19:52:53.23 |
+61:25:31.9 |
HIP 97751 |
10.04 |
| 2026-02-03 12:00 |
19:54:04.21 |
+61:24:57.6 |
HIP 97751 |
17.05 |
| 2026-02-04 00:00 |
19:55:14.90 |
+61:24:24.1 |
HIP 97751 |
24.98 |
| 2026-02-04 12:00 |
19:56:25.29 |
+61:23:51.5 |
HIP 97751 |
33.17 |
| 2026-02-05 00:00 |
19:57:35.40 |
+61:23:19.6 |
HIP 98483 |
27.80 |
| 2026-02-05 12:00 |
19:58:45.22 |
+61:22:48.6 |
HIP 98483 |
21.90 |
| 2026-02-06 00:00 |
19:59:54.74 |
+61:22:18.5 |
HIP 98483 |
18.14 |
| 2026-02-06 12:00 |
20:01:03.98 |
+61:21:49.2 |
HIP 98483 |
17.86 |
| 2026-02-07 00:00 |
20:02:12.93 |
+61:21:20.7 |
HIP 98483 |
21.17 |
| 2026-02-07 12:00 |
20:03:21.59 |
+61:20:53.2 |
HIP 98762 |
19.08 |
| 2026-02-08 00:00 |
20:04:29.96 |
+61:20:26.5 |
HIP 98762 |
19.76 |
| 2026-02-08 12:00 |
20:05:38.04 |
+61:20:00.7 |
HIP 99180 |
21.87 |
| 2026-02-09 00:00 |
20:06:45.83 |
+61:19:35.9 |
HIP 99180 |
15.53 |
| 2026-02-09 12:00 |
20:07:53.33 |
+61:19:11.9 |
HIP 99180 |
11.73 |
| 2026-02-10 00:00 |
20:09:00.54 |
+61:18:48.8 |
HIP 99381 |
9.26 |
| 2026-02-10 12:00 |
20:10:07.47 |
+61:18:26.7 |
HIP 99381 |
2.52 |
| 2026-02-11 00:00 |
20:11:14.10 |
+61:18:05.6 |
HIP 99381 |
7.45 |
| 2026-02-11 12:00 |
20:12:20.45 |
+61:17:45.3 |
HIP 99381 |
15.22 |
| 2026-02-12 00:00 |
20:13:26.50 |
+61:17:26.1 |
HIP 99381 |
23.09 |
| 2026-02-12 12:00 |
20:14:32.27 |
+61:17:07.7 |
HIP 99381 |
30.96 |
| 2026-02-13 00:00 |
20:15:37.74 |
+61:16:50.4 |
HIP 100190 |
26.68 |
| 2026-02-13 12:00 |
20:16:42.93 |
+61:16:34.0 |
HIP 100190 |
18.87 |
| 2026-02-14 00:00 |
20:17:47.83 |
+61:16:18.6 |
HIP 100190 |
11.10 |
| 2026-02-14 12:00 |
20:18:52.44 |
+61:16:04.2 |
HIP 100190 |
3.52 |
| 2026-02-15 00:00 |
20:19:56.76 |
+61:15:50.8 |
HIP 100190 |
4.67 |
| 2026-02-15 12:00 |
20:21:00.79 |
+61:15:38.4 |
HIP 100190 |
12.24 |
| 2026-02-16 00:00 |
20:22:04.53 |
+61:15:27.1 |
HIP 100190 |
19.87 |
| 2026-02-16 12:00 |
20:23:07.99 |
+61:15:16.7 |
HIP 100705 |
13.90 |
| 2026-02-17 00:00 |
20:24:11.15 |
+61:15:07.3 |
HIP 100705 |
6.67 |
| 2026-02-17 12:00 |
20:25:14.03 |
+61:14:59.0 |
HIP 100705 |
3.27 |
| 2026-02-18 00:00 |
20:26:16.61 |
+61:14:51.6 |
HIP 100705 |
9.50 |
| 2026-02-18 12:00 |
20:27:18.91 |
+61:14:45.4 |
HIP 100705 |
16.79 |
| 2026-02-19 00:00 |
20:28:20.91 |
+61:14:40.1 |
HIP 101096 |
17.62 |
| 2026-02-19 12:00 |
20:29:22.63 |
+61:14:35.9 |
HIP 101096 |
15.14 |
| 2026-02-20 00:00 |
20:30:24.06 |
+61:14:32.7 |
HIP 101096 |
16.09 |
| 2026-02-20 12:00 |
20:31:25.20 |
+61:14:30.6 |
HIP 101096 |
19.97 |
| 2026-02-21 00:00 |
20:32:26.05 |
+61:14:29.5 |
HIP 101096 |
25.42 |
| 2026-02-21 12:00 |
20:33:26.61 |
+61:14:29.4 |
HIP 101719 |
27.57 |
| 2026-02-22 00:00 |
20:34:26.89 |
+61:14:30.4 |
HIP 101719 |
20.69 |
| 2026-02-22 12:00 |
20:35:26.87 |
+61:14:32.4 |
HIP 101719 |
14.18 |
| 2026-02-23 00:00 |
20:36:26.57 |
+61:14:35.5 |
HIP 101719 |
8.82 |
| 2026-02-23 12:00 |
20:37:25.98 |
+61:14:39.7 |
HIP 101719 |
7.54 |
| 2026-02-24 00:00 |
20:38:25.10 |
+61:14:44.9 |
HIP 101719 |
11.69 |