메타데이터
| 항목 |
값 |
| Designation |
C/2022 O1 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-02-15T13:27:28.730880Z |
| Orbit solution date (soln_date, UTC) |
2023-12-21T03:13:05Z |
| Obs used |
189 |
| NEO |
- |
| M1 |
5.800 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-07-26T03:07:23.577600Z |
| Discovery magnitude (MPC) |
19.32 c |
| Discovery observatory (MPC) |
M22 · ATLAS South Africa, Sutherland |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-10-15.0000000 |
| e |
1.00485234 |
| q (au) |
7.430031 |
| a (au) |
-1531.226453 |
| i (deg) |
71.044322 |
| Ω (om, deg) |
49.910226 |
| ω (w, deg) |
268.885126 |
| M (ma, deg) |
0.003971 |
밝기
산란 + 전체 선형
$$
M_a = (11.639 + 3.878\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.639 |
| n |
3.878 |
| gf |
0.997 |
| gb |
-0.934 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
02:53:41.65 |
+00:57:30.8 |
HIP 13373 |
25.66 |
| 2026-03-26 12:00 |
02:53:48.77 |
+00:59:12.9 |
HIP 13373 |
27.89 |
| 2026-03-27 00:00 |
02:53:55.93 |
+01:00:54.9 |
HIP 13373 |
30.17 |
| 2026-03-27 12:00 |
02:54:03.13 |
+01:02:36.7 |
HIP 13620 |
28.31 |
| 2026-03-28 00:00 |
02:54:10.37 |
+01:04:18.4 |
HIP 13620 |
25.84 |
| 2026-03-28 12:00 |
02:54:17.65 |
+01:06:00.0 |
HIP 13620 |
23.35 |
| 2026-03-29 00:00 |
02:54:24.98 |
+01:07:41.3 |
HIP 13620 |
20.86 |
| 2026-03-29 12:00 |
02:54:32.34 |
+01:09:22.5 |
HIP 13620 |
18.37 |
| 2026-03-30 00:00 |
02:54:39.75 |
+01:11:03.5 |
HIP 13620 |
15.87 |
| 2026-03-30 12:00 |
02:54:47.19 |
+01:12:44.3 |
HIP 13620 |
13.36 |
| 2026-03-31 00:00 |
02:54:54.67 |
+01:14:25.0 |
HIP 13620 |
10.85 |
| 2026-03-31 12:00 |
02:55:02.19 |
+01:16:05.5 |
HIP 13620 |
8.33 |
| 2026-04-01 00:00 |
02:55:09.74 |
+01:17:45.9 |
HIP 13620 |
5.82 |
| 2026-04-01 12:00 |
02:55:17.34 |
+01:19:26.1 |
HIP 13620 |
3.30 |
| 2026-04-02 00:00 |
02:55:24.97 |
+01:21:06.1 |
HIP 13620 |
0.82 |
| 2026-04-02 12:00 |
02:55:32.63 |
+01:22:45.9 |
HIP 13620 |
1.82 |
| 2026-04-03 00:00 |
02:55:40.33 |
+01:24:25.5 |
HIP 13620 |
4.34 |
| 2026-04-03 12:00 |
02:55:48.07 |
+01:26:04.9 |
HIP 13620 |
6.89 |
| 2026-04-04 00:00 |
02:55:55.84 |
+01:27:44.2 |
HIP 13620 |
9.43 |
| 2026-04-04 12:00 |
02:56:03.65 |
+01:29:23.3 |
HIP 13620 |
11.99 |
| 2026-04-05 00:00 |
02:56:11.48 |
+01:31:02.2 |
HIP 13620 |
14.55 |
| 2026-04-05 12:00 |
02:56:19.36 |
+01:32:40.9 |
HIP 13620 |
17.11 |
| 2026-04-06 00:00 |
02:56:27.26 |
+01:34:19.4 |
HIP 13620 |
19.68 |
| 2026-04-06 12:00 |
02:56:35.20 |
+01:35:57.7 |
HIP 13773 |
19.94 |
| 2026-04-07 00:00 |
02:56:43.17 |
+01:37:35.8 |
HIP 13773 |
17.55 |
| 2026-04-07 12:00 |
02:56:51.17 |
+01:39:13.7 |
HIP 13773 |
15.23 |
| 2026-04-08 00:00 |
02:56:59.20 |
+01:40:51.4 |
HIP 13773 |
13.00 |
| 2026-04-08 12:00 |
02:57:07.26 |
+01:42:28.9 |
HIP 13773 |
10.94 |
| 2026-04-09 00:00 |
02:57:15.35 |
+01:44:06.2 |
HIP 13773 |
9.15 |
| 2026-04-09 12:00 |
02:57:23.47 |
+01:45:43.3 |
HIP 13773 |
7.83 |
| 2026-04-10 00:00 |
02:57:31.62 |
+01:47:20.2 |
HIP 13773 |
7.24 |
| 2026-04-10 12:00 |
02:57:39.80 |
+01:48:56.9 |
HIP 13773 |
7.57 |
| 2026-04-11 00:00 |
02:57:48.01 |
+01:50:33.3 |
HIP 13773 |
8.70 |
| 2026-04-11 12:00 |
02:57:56.24 |
+01:52:09.6 |
HIP 13773 |
10.39 |
| 2026-04-12 00:00 |
02:58:04.50 |
+01:53:45.6 |
HIP 13773 |
12.40 |
| 2026-04-12 12:00 |
02:58:12.79 |
+01:55:21.4 |
HIP 13869 |
13.37 |
| 2026-04-13 00:00 |
02:58:21.10 |
+01:56:57.0 |
HIP 13869 |
11.06 |
| 2026-04-13 12:00 |
02:58:29.44 |
+01:58:32.3 |
HIP 13869 |
8.92 |
| 2026-04-14 00:00 |
02:58:37.81 |
+02:00:07.4 |
HIP 13869 |
7.11 |
| 2026-04-14 12:00 |
02:58:46.19 |
+02:01:42.3 |
HIP 13869 |
5.96 |
| 2026-04-15 00:00 |
02:58:54.61 |
+02:03:17.0 |
HIP 13869 |
5.85 |
| 2026-04-15 12:00 |
02:59:03.04 |
+02:04:51.4 |
HIP 13869 |
6.84 |
| 2026-04-16 00:00 |
02:59:11.50 |
+02:06:25.6 |
HIP 13869 |
8.57 |