C/2022 E2 (ATLAS)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | C/2022 E2 (ATLAS) |
| Type | C |
| Perihelion (tp_cal, UTC) | 2024-09-14T02:58:04.370880Z |
| Orbit solution date (soln_date, UTC) | 2026-05-28T12:12:15Z |
| Obs used | 5581 |
| NEO | - |
| M1 | 8.400 |
| K1 | 5.750 |
| PC | - |
| Discovery observation (MPC, UTC) | 2022-03-07T02:52:22.339200Z |
| Discovery magnitude (MPC) | 18.76 c |
| Discovery observatory (MPC) | W68 · ATLAS Chile, Rio Hurtado |
Osculating 궤도요소
| 항목 | 값 |
|---|---|
| Epoch (epoch_cal, TDB) | 2024-07-21.0000000 |
| e | 1.00094890 |
| q (au) | 3.666303 |
| a (au) | -3863.755849 |
| i (deg) | 137.127993 |
| Ω (om, deg) | 125.372152 |
| ω (w, deg) | 41.720464 |
| M (ma, deg) | -0.000226 |
밝기
산란 + 전체 선형
$$ M_a = (6.544 + 3.065\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | 6.544 |
| n | 3.065 |
| gf | 0.999 |
| gb | -0.873 |
| k | 0.999 |
| 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 |
|---|---|---|---|
| 2022-02-23 | 2024-01-05 | +2.1355 | -1.939 |
| 2024-01-05 | 2024-09-14 | +6.6566 | -4.393 |
| 2024-09-15 | 2026-06-08 | +3.8385 | -2.373 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
찾아보기
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-06-01 00:00 | 23:13:55.19 | +31:18:05.5 | HIP 114838 | 31.90 |
| 2026-06-01 12:00 | 23:13:50.94 | +31:19:21.6 | HIP 114838 | 31.69 |
| 2026-06-02 00:00 | 23:13:46.53 | +31:20:37.3 | HIP 114838 | 31.58 |
| 2026-06-02 12:00 | 23:13:41.94 | +31:21:52.5 | HIP 114838 | 31.59 |
| 2026-06-03 00:00 | 23:13:37.20 | +31:23:07.2 | HIP 114838 | 31.71 |
| 2026-06-03 12:00 | 23:13:32.29 | +31:24:21.4 | HIP 114838 | 31.94 |
| 2026-06-04 00:00 | 23:13:27.21 | +31:25:35.2 | HIP 114838 | 32.29 |
| 2026-06-04 12:00 | 23:13:21.96 | +31:26:48.4 | HIP 114838 | 32.75 |
| 2026-06-05 00:00 | 23:13:16.55 | +31:28:01.1 | HIP 114838 | 33.33 |
| 2026-06-05 12:00 | 23:13:10.97 | +31:29:13.3 | HIP 114838 | 34.01 |
| 2026-06-06 00:00 | 23:13:05.22 | +31:30:24.9 | HIP 114471 | 34.50 |
| 2026-06-06 12:00 | 23:12:59.30 | +31:31:35.9 | HIP 114471 | 34.28 |
| 2026-06-07 00:00 | 23:12:53.21 | +31:32:46.4 | HIP 114471 | 34.12 |
| 2026-06-07 12:00 | 23:12:46.95 | +31:33:56.3 | HIP 114471 | 34.01 |
| 2026-06-08 00:00 | 23:12:40.52 | +31:35:05.6 | HIP 114511 | 32.88 |
| 2026-06-08 12:00 | 23:12:33.92 | +31:36:14.3 | HIP 114511 | 31.28 |
| 2026-06-09 00:00 | 23:12:27.14 | +31:37:22.3 | HIP 114511 | 29.70 |
| 2026-06-09 12:00 | 23:12:20.20 | +31:38:29.7 | HIP 114511 | 28.15 |
| 2026-06-10 00:00 | 23:12:13.08 | +31:39:36.4 | HIP 114511 | 26.64 |
| 2026-06-10 12:00 | 23:12:05.79 | +31:40:42.5 | HIP 114511 | 25.17 |
| 2026-06-11 00:00 | 23:11:58.32 | +31:41:47.9 | HIP 114511 | 23.78 |
| 2026-06-11 12:00 | 23:11:50.68 | +31:42:52.5 | HIP 114511 | 22.47 |
| 2026-06-12 00:00 | 23:11:42.87 | +31:43:56.5 | HIP 114511 | 21.27 |
| 2026-06-12 12:00 | 23:11:34.88 | +31:44:59.7 | HIP 114511 | 20.21 |
| 2026-06-13 00:00 | 23:11:26.71 | +31:46:02.2 | HIP 114511 | 19.31 |
| 2026-06-13 12:00 | 23:11:18.37 | +31:47:03.9 | HIP 114511 | 18.60 |
| 2026-06-14 00:00 | 23:11:09.86 | +31:48:04.9 | HIP 114511 | 18.13 |
| 2026-06-14 12:00 | 23:11:01.16 | +31:49:05.0 | HIP 114511 | 17.92 |
| 2026-06-15 00:00 | 23:10:52.29 | +31:50:04.4 | HIP 114511 | 17.98 |
| 2026-06-15 12:00 | 23:10:43.24 | +31:51:02.9 | HIP 114511 | 18.32 |
| 2026-06-16 00:00 | 23:10:34.02 | +31:52:00.6 | HIP 114511 | 18.94 |
| 2026-06-16 12:00 | 23:10:24.62 | +31:52:57.4 | HIP 114511 | 19.82 |
| 2026-06-17 00:00 | 23:10:15.04 | +31:53:53.4 | HIP 114511 | 20.94 |
| 2026-06-17 12:00 | 23:10:05.28 | +31:54:48.5 | HIP 114511 | 22.26 |
| 2026-06-18 00:00 | 23:09:55.34 | +31:55:42.7 | HIP 114511 | 23.77 |
| 2026-06-18 12:00 | 23:09:45.23 | +31:56:36.0 | HIP 114511 | 25.43 |
| 2026-06-19 00:00 | 23:09:34.94 | +31:57:28.3 | HIP 114511 | 27.23 |
| 2026-06-19 12:00 | 23:09:24.47 | +31:58:19.8 | HIP 114511 | 29.15 |
| 2026-06-20 00:00 | 23:09:13.82 | +31:59:10.2 | HIP 114145 | 28.32 |
| 2026-06-20 12:00 | 23:09:03.00 | +31:59:59.7 | HIP 114145 | 26.02 |
| 2026-06-21 00:00 | 23:08:52.00 | +32:00:48.2 | HIP 114145 | 23.72 |
| 2026-06-21 12:00 | 23:08:40.82 | +32:01:35.8 | HIP 114145 | 21.41 |
| 2026-06-22 00:00 | 23:08:29.46 | +32:02:22.3 | HIP 114145 | 19.11 |