C/2022 R3 (Leonard)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | C/2022 R3 (Leonard) |
| Type | C |
| Perihelion (tp_cal, UTC) | 2023-03-05T07:22:22.114560Z |
| Orbit solution date (soln_date, UTC) | 2025-04-11T14:44:29Z |
| Obs used | 355 |
| NEO | - |
| M1 | 12.300 |
| K1 | 4.500 |
| PC | - |
| Discovery observation (MPC, UTC) | 2022-09-15T08:35:14.697600Z |
| Discovery magnitude (MPC) | 18.96 G |
| Discovery observatory (MPC) | G96 · Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 | 값 |
|---|---|
| Epoch (epoch_cal, TDB) | 2023-08-01.0000000 |
| e | 1.00075876 |
| q (au) | 5.128952 |
| a (au) | -6759.666695 |
| i (deg) | 43.082904 |
| Ω (om, deg) | 8.238598 |
| ω (w, deg) | 72.866685 |
| M (ma, deg) | 0.000264 |
밝기
산란 + 전체 선형
$$ M_a = (16.040 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | 16.040 |
| n | 2.000 |
| gf | 1.000 |
| gb | -0.844 |
| k | 0.800 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) | 끝 (UTC) | a | b |
|---|---|---|---|
| 2023-08-17 | 2024-05-13 | -12.5844 | +9.340 |
| 2024-05-13 | 2026-02-25 | -19.7422 | +16.108 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
찾아보기
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-03-26 00:00 | 11:50:39.33 | +19:13:51.7 | HIP 57666 | 22.79 |
| 2026-03-26 12:00 | 11:50:28.05 | +19:13:55.6 | HIP 57666 | 21.27 |
| 2026-03-27 00:00 | 11:50:16.79 | +19:13:58.7 | HIP 57666 | 19.99 |
| 2026-03-27 12:00 | 11:50:05.57 | +19:14:01.1 | HIP 57666 | 18.98 |
| 2026-03-28 00:00 | 11:49:54.37 | +19:14:02.8 | HIP 57666 | 18.30 |
| 2026-03-28 12:00 | 11:49:43.21 | +19:14:03.8 | HIP 57666 | 17.97 |
| 2026-03-29 00:00 | 11:49:32.08 | +19:14:04.1 | HIP 57666 | 18.01 |
| 2026-03-29 12:00 | 11:49:20.99 | +19:14:03.7 | HIP 57666 | 18.42 |
| 2026-03-30 00:00 | 11:49:09.93 | +19:14:02.6 | HIP 57666 | 19.16 |
| 2026-03-30 12:00 | 11:48:58.92 | +19:14:00.7 | HIP 57666 | 20.21 |
| 2026-03-31 00:00 | 11:48:47.94 | +19:13:58.1 | HIP 57666 | 21.50 |
| 2026-03-31 12:00 | 11:48:37.00 | +19:13:54.8 | HIP 57503 | 20.74 |
| 2026-04-01 00:00 | 11:48:26.10 | +19:13:50.8 | HIP 57503 | 18.25 |
| 2026-04-01 12:00 | 11:48:15.24 | +19:13:46.0 | HIP 57503 | 15.81 |
| 2026-04-02 00:00 | 11:48:04.43 | +19:13:40.5 | HIP 57503 | 13.42 |
| 2026-04-02 12:00 | 11:47:53.66 | +19:13:34.2 | HIP 57503 | 11.12 |
| 2026-04-03 00:00 | 11:47:42.93 | +19:13:27.3 | HIP 57503 | 8.97 |
| 2026-04-03 12:00 | 11:47:32.26 | +19:13:19.6 | HIP 57503 | 7.09 |
| 2026-04-04 00:00 | 11:47:21.63 | +19:13:11.1 | HIP 57503 | 5.75 |
| 2026-04-04 12:00 | 11:47:11.05 | +19:13:01.9 | HIP 57503 | 5.34 |
| 2026-04-05 00:00 | 11:47:00.51 | +19:12:52.0 | HIP 57503 | 6.06 |
| 2026-04-05 12:00 | 11:46:50.03 | +19:12:41.3 | HIP 57503 | 7.57 |
| 2026-04-06 00:00 | 11:46:39.60 | +19:12:29.9 | HIP 57503 | 9.49 |
| 2026-04-06 12:00 | 11:46:29.23 | +19:12:17.7 | HIP 57503 | 11.62 |
| 2026-04-07 00:00 | 11:46:18.91 | +19:12:04.8 | HIP 57503 | 13.85 |
| 2026-04-07 12:00 | 11:46:08.64 | +19:11:51.1 | HIP 57503 | 16.14 |
| 2026-04-08 00:00 | 11:45:58.43 | +19:11:36.7 | HIP 57503 | 18.45 |
| 2026-04-08 12:00 | 11:45:48.27 | +19:11:21.6 | HIP 57503 | 20.79 |
| 2026-04-09 00:00 | 11:45:38.18 | +19:11:05.6 | HIP 57307 | 20.80 |
| 2026-04-09 12:00 | 11:45:28.14 | +19:10:49.0 | HIP 57307 | 20.20 |
| 2026-04-10 00:00 | 11:45:18.16 | +19:10:31.5 | HIP 57307 | 19.88 |
| 2026-04-10 12:00 | 11:45:08.25 | +19:10:13.3 | HIP 57307 | 19.85 |
| 2026-04-11 00:00 | 11:44:58.39 | +19:09:54.4 | HIP 57307 | 20.11 |
| 2026-04-11 12:00 | 11:44:48.60 | +19:09:34.7 | HIP 57307 | 20.65 |
| 2026-04-12 00:00 | 11:44:38.88 | +19:09:14.2 | HIP 57307 | 21.44 |
| 2026-04-12 12:00 | 11:44:29.22 | +19:08:53.0 | HIP 57307 | 22.45 |
| 2026-04-13 00:00 | 11:44:19.62 | +19:08:31.0 | HIP 57307 | 23.65 |
| 2026-04-13 12:00 | 11:44:10.09 | +19:08:08.3 | HIP 57307 | 25.00 |
| 2026-04-14 00:00 | 11:44:00.63 | +19:07:44.8 | HIP 57307 | 26.48 |
| 2026-04-14 12:00 | 11:43:51.24 | +19:07:20.5 | HIP 57121 | 27.14 |
| 2026-04-15 00:00 | 11:43:41.92 | +19:06:55.5 | HIP 57121 | 25.46 |
| 2026-04-15 12:00 | 11:43:32.67 | +19:06:29.7 | HIP 57121 | 23.86 |
| 2026-04-16 00:00 | 11:43:23.49 | +19:06:03.2 | HIP 57121 | 22.38 |