C/2023 S2 (ATLAS)
메타데이터
| 항목 |
값 |
| Designation |
C/2023 S2 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-10-15T09:03:22.020480Z |
| Orbit solution date (soln_date, UTC) |
2024-06-06T23:12:32Z |
| Obs used |
392 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
25.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-09-28T23:40:21.590400Z |
| Discovery magnitude (MPC) |
15.15 o |
| Discovery observatory (MPC) |
W68 · ATLAS Chile, Rio Hurtado |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-10-11.0000000 |
| e |
0.99288676 |
| q (au) |
1.067716 |
| a (au) |
150.102592 |
| i (deg) |
20.485436 |
| Ω (om, deg) |
230.562176 |
| ω (w, deg) |
78.109160 |
| M (ma, deg) |
359.997654 |
밝기
산란 + 전체 선형
$$
M_a = (14.136 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.136 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| 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) |
| 2026-02-03 00:00 |
05:26:03.57 |
+10:04:21.0 |
HIP 25326 |
16.38 |
| 2026-02-03 12:00 |
05:25:57.21 |
+10:04:45.9 |
HIP 25326 |
15.07 |
| 2026-02-04 00:00 |
05:25:50.98 |
+10:05:11.0 |
HIP 25326 |
13.85 |
| 2026-02-04 12:00 |
05:25:44.86 |
+10:05:36.5 |
HIP 25326 |
12.75 |
| 2026-02-05 00:00 |
05:25:38.85 |
+10:06:02.2 |
HIP 25326 |
11.78 |
| 2026-02-05 12:00 |
05:25:32.97 |
+10:06:28.2 |
HIP 25326 |
10.96 |
| 2026-02-06 00:00 |
05:25:27.20 |
+10:06:54.4 |
HIP 25326 |
10.33 |
| 2026-02-06 12:00 |
05:25:21.56 |
+10:07:21.0 |
HIP 25326 |
9.89 |
| 2026-02-07 00:00 |
05:25:16.03 |
+10:07:47.7 |
HIP 25326 |
9.68 |
| 2026-02-07 12:00 |
05:25:10.62 |
+10:08:14.8 |
HIP 25326 |
9.68 |
| 2026-02-08 00:00 |
05:25:05.33 |
+10:08:42.1 |
HIP 25326 |
9.90 |
| 2026-02-08 12:00 |
05:25:00.16 |
+10:09:09.6 |
HIP 25326 |
10.30 |
| 2026-02-09 00:00 |
05:24:55.12 |
+10:09:37.4 |
HIP 25326 |
10.85 |
| 2026-02-09 12:00 |
05:24:50.19 |
+10:10:05.5 |
HIP 25326 |
11.53 |
| 2026-02-10 00:00 |
05:24:45.38 |
+10:10:33.7 |
HIP 25326 |
12.31 |
| 2026-02-10 12:00 |
05:24:40.69 |
+10:11:02.3 |
HIP 25326 |
13.15 |
| 2026-02-11 00:00 |
05:24:36.12 |
+10:11:31.0 |
HIP 25326 |
14.05 |
| 2026-02-11 12:00 |
05:24:31.68 |
+10:12:00.0 |
HIP 25326 |
14.98 |
| 2026-02-12 00:00 |
05:24:27.35 |
+10:12:29.2 |
HIP 25326 |
15.93 |
| 2026-02-12 12:00 |
05:24:23.15 |
+10:12:58.6 |
HIP 25326 |
16.90 |
| 2026-02-13 00:00 |
05:24:19.07 |
+10:13:28.3 |
HIP 25326 |
17.87 |
| 2026-02-13 12:00 |
05:24:15.11 |
+10:13:58.2 |
HIP 25326 |
18.84 |
| 2026-02-14 00:00 |
05:24:11.27 |
+10:14:28.2 |
HIP 25326 |
19.82 |
| 2026-02-14 12:00 |
05:24:07.56 |
+10:14:58.5 |
HIP 25326 |
20.78 |
| 2026-02-15 00:00 |
05:24:03.97 |
+10:15:29.0 |
HIP 25326 |
21.74 |
| 2026-02-15 12:00 |
05:24:00.49 |
+10:15:59.7 |
HIP 25326 |
22.68 |
| 2026-02-16 00:00 |
05:23:57.15 |
+10:16:30.6 |
HIP 25326 |
23.61 |
| 2026-02-16 12:00 |
05:23:53.92 |
+10:17:01.6 |
HIP 25326 |
24.53 |
| 2026-02-17 00:00 |
05:23:50.82 |
+10:17:32.9 |
HIP 25326 |
25.43 |
| 2026-02-17 12:00 |
05:23:47.83 |
+10:18:04.3 |
HIP 25326 |
26.31 |
| 2026-02-18 00:00 |
05:23:44.97 |
+10:18:36.0 |
HIP 25326 |
27.18 |
| 2026-02-18 12:00 |
05:23:42.24 |
+10:19:07.8 |
HIP 25326 |
28.02 |
| 2026-02-19 00:00 |
05:23:39.62 |
+10:19:39.7 |
HIP 25326 |
28.85 |
| 2026-02-19 12:00 |
05:23:37.13 |
+10:20:11.9 |
HIP 25033 |
29.08 |
| 2026-02-20 00:00 |
05:23:34.76 |
+10:20:44.2 |
HIP 25033 |
28.51 |
| 2026-02-20 12:00 |
05:23:32.51 |
+10:21:16.6 |
HIP 25033 |
27.99 |
| 2026-02-21 00:00 |
05:23:30.38 |
+10:21:49.2 |
HIP 25033 |
27.50 |
| 2026-02-21 12:00 |
05:23:28.38 |
+10:22:22.0 |
HIP 25033 |
27.06 |
| 2026-02-22 00:00 |
05:23:26.50 |
+10:22:54.9 |
HIP 25033 |
26.66 |
| 2026-02-22 12:00 |
05:23:24.74 |
+10:23:28.0 |
HIP 25033 |
26.31 |
| 2026-02-23 00:00 |
05:23:23.10 |
+10:24:01.1 |
HIP 25033 |
25.99 |
| 2026-02-23 12:00 |
05:23:21.58 |
+10:24:34.5 |
HIP 25033 |
25.73 |
| 2026-02-24 00:00 |
05:23:20.18 |
+10:25:07.9 |
HIP 25033 |
25.50 |