C/2023 E1 (ATLAS)
메타데이터
| 항목 |
값 |
| Designation |
C/2023 E1 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-07-01T02:34:44.604480Z |
| Orbit solution date (soln_date, UTC) |
2024-02-17T03:13:27Z |
| Obs used |
3004 |
| NEO |
Yes |
| M1 |
16.200 |
| K1 |
7.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-03-01T00:05:50.179200Z |
| Discovery magnitude (MPC) |
18.82 o |
| Discovery observatory (MPC) |
M22 · ATLAS South Africa, Sutherland |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-07-02.0000000 |
| e |
0.94690275 |
| q (au) |
1.026605 |
| a (au) |
19.334429 |
| i (deg) |
38.312983 |
| Ω (om, deg) |
164.574212 |
| ω (w, deg) |
105.894615 |
| M (ma, deg) |
0.010347 |
밝기
산란 + 전체 선형
$$
M_a = (15.225 + 5.430\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.225 |
| n |
5.430 |
| gf |
1.000 |
| gb |
-0.698 |
| k |
0.944 |
| 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 |
| 2022-12-25 |
2023-06-30 |
+7.4977 |
-1.780 |
| 2023-07-01 |
2023-12-11 |
-0.4365 |
-1.505 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
03:27:36.89 |
-18:41:01.9 |
HIP 16018 |
22.96 |
| 2026-02-03 12:00 |
03:27:37.05 |
-18:39:08.1 |
HIP 16197 |
22.33 |
| 2026-02-04 00:00 |
03:27:37.32 |
-18:37:14.0 |
HIP 16197 |
20.92 |
| 2026-02-04 12:00 |
03:27:37.71 |
-18:35:19.7 |
HIP 16197 |
19.57 |
| 2026-02-05 00:00 |
03:27:38.21 |
-18:33:25.1 |
HIP 16197 |
18.29 |
| 2026-02-05 12:00 |
03:27:38.83 |
-18:31:30.3 |
HIP 16197 |
17.10 |
| 2026-02-06 00:00 |
03:27:39.56 |
-18:29:35.3 |
HIP 16197 |
16.03 |
| 2026-02-06 12:00 |
03:27:40.40 |
-18:27:40.1 |
HIP 16197 |
15.10 |
| 2026-02-07 00:00 |
03:27:41.36 |
-18:25:44.6 |
HIP 16197 |
14.35 |
| 2026-02-07 12:00 |
03:27:42.44 |
-18:23:49.0 |
HIP 16197 |
13.80 |
| 2026-02-08 00:00 |
03:27:43.62 |
-18:21:53.2 |
HIP 16197 |
13.49 |
| 2026-02-08 12:00 |
03:27:44.92 |
-18:19:57.2 |
HIP 16197 |
13.43 |
| 2026-02-09 00:00 |
03:27:46.33 |
-18:18:01.0 |
HIP 16197 |
13.63 |
| 2026-02-09 12:00 |
03:27:47.86 |
-18:16:04.7 |
HIP 16197 |
14.07 |
| 2026-02-10 00:00 |
03:27:49.49 |
-18:14:08.2 |
HIP 16197 |
14.76 |
| 2026-02-10 12:00 |
03:27:51.24 |
-18:12:11.5 |
HIP 16197 |
15.64 |
| 2026-02-11 00:00 |
03:27:53.10 |
-18:10:14.8 |
HIP 16197 |
16.70 |
| 2026-02-11 12:00 |
03:27:55.07 |
-18:08:17.9 |
HIP 16197 |
17.90 |
| 2026-02-12 00:00 |
03:27:57.15 |
-18:06:20.9 |
HIP 16197 |
19.23 |
| 2026-02-12 12:00 |
03:27:59.34 |
-18:04:23.7 |
HIP 16197 |
20.66 |
| 2026-02-13 00:00 |
03:28:01.64 |
-18:02:26.5 |
HIP 16197 |
22.16 |
| 2026-02-13 12:00 |
03:28:04.05 |
-18:00:29.2 |
HIP 16197 |
23.74 |
| 2026-02-14 00:00 |
03:28:06.57 |
-17:58:31.8 |
HIP 16197 |
25.38 |
| 2026-02-14 12:00 |
03:28:09.20 |
-17:56:34.3 |
HIP 16197 |
27.07 |
| 2026-02-15 00:00 |
03:28:11.93 |
-17:54:36.8 |
HIP 16197 |
28.80 |
| 2026-02-15 12:00 |
03:28:14.78 |
-17:52:39.2 |
HIP 16197 |
30.56 |
| 2026-02-16 00:00 |
03:28:17.73 |
-17:50:41.6 |
HIP 16197 |
32.36 |
| 2026-02-16 12:00 |
03:28:20.78 |
-17:48:43.9 |
HIP 16197 |
34.19 |
| 2026-02-17 00:00 |
03:28:23.95 |
-17:46:46.2 |
HIP 16197 |
36.05 |
| 2026-02-17 12:00 |
03:28:27.22 |
-17:44:48.5 |
HIP 16197 |
37.93 |
| 2026-02-18 00:00 |
03:28:30.60 |
-17:42:50.8 |
HIP 16197 |
39.83 |
| 2026-02-18 12:00 |
03:28:34.08 |
-17:40:53.1 |
HIP 16197 |
41.75 |
| 2026-02-19 00:00 |
03:28:37.67 |
-17:38:55.3 |
HIP 16259 |
41.16 |
| 2026-02-19 12:00 |
03:28:41.36 |
-17:36:57.6 |
HIP 16259 |
39.02 |
| 2026-02-20 00:00 |
03:28:45.15 |
-17:35:00.0 |
HIP 16259 |
36.87 |
| 2026-02-20 12:00 |
03:28:49.05 |
-17:33:02.3 |
HIP 16259 |
34.72 |
| 2026-02-21 00:00 |
03:28:53.05 |
-17:31:04.7 |
HIP 16259 |
32.57 |
| 2026-02-21 12:00 |
03:28:57.15 |
-17:29:07.1 |
HIP 16259 |
30.41 |
| 2026-02-22 00:00 |
03:29:01.36 |
-17:27:09.6 |
HIP 16259 |
28.25 |
| 2026-02-22 12:00 |
03:29:05.66 |
-17:25:12.2 |
HIP 16259 |
26.10 |
| 2026-02-23 00:00 |
03:29:10.07 |
-17:23:14.9 |
HIP 16259 |
23.95 |
| 2026-02-23 12:00 |
03:29:14.57 |
-17:21:17.6 |
HIP 16259 |
21.81 |
| 2026-02-24 00:00 |
03:29:19.17 |
-17:19:20.4 |
HIP 16259 |
19.68 |