메타데이터
| 항목 |
값 |
| Designation |
C/2022 Q2 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-01-31T14:05:21.716160Z |
| Orbit solution date (soln_date, UTC) |
2023-08-06T18:13:02Z |
| Obs used |
591 |
| NEO |
- |
| M1 |
13.800 |
| K1 |
9.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2022-08-27T14:05:17.059200Z |
| Discovery magnitude (MPC) |
19.06 o |
| Discovery observatory (MPC) |
T08 · ATLAS-MLO, Mauna Loa |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-11-02.0000000 |
| e |
0.94987994 |
| q (au) |
1.644140 |
| a (au) |
32.804037 |
| i (deg) |
151.486615 |
| Ω (om, deg) |
352.943256 |
| ω (w, deg) |
44.060185 |
| M (ma, deg) |
359.524797 |
밝기
산란 + 전체 선형
$$
M_a = (13.015 + 3.982\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.015 |
| n |
3.982 |
| gf |
1.000 |
| gb |
-0.839 |
| k |
0.998 |
| 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 |
| 2022-08-27 |
2022-12-21 |
+0.4118 |
-0.203 |
| 2023-04-03 |
2023-07-16 |
-8.5392 |
+4.736 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
11:28:15.64 |
+03:16:32.7 |
HIP 55945 |
25.63 |
| 2026-03-26 12:00 |
11:28:01.97 |
+03:17:43.1 |
HIP 55846 |
25.49 |
| 2026-03-27 00:00 |
11:27:48.34 |
+03:18:53.1 |
HIP 55846 |
23.93 |
| 2026-03-27 12:00 |
11:27:34.74 |
+03:20:03.0 |
HIP 55846 |
22.84 |
| 2026-03-28 00:00 |
11:27:21.19 |
+03:21:12.5 |
HIP 55846 |
22.28 |
| 2026-03-28 12:00 |
11:27:07.69 |
+03:22:21.8 |
HIP 55846 |
22.29 |
| 2026-03-29 00:00 |
11:26:54.23 |
+03:23:30.9 |
HIP 55769 |
19.43 |
| 2026-03-29 12:00 |
11:26:40.81 |
+03:24:39.6 |
HIP 55769 |
16.66 |
| 2026-03-30 00:00 |
11:26:27.44 |
+03:25:48.0 |
HIP 55769 |
14.25 |
| 2026-03-30 12:00 |
11:26:14.12 |
+03:26:56.2 |
HIP 55769 |
12.38 |
| 2026-03-31 00:00 |
11:26:00.84 |
+03:28:04.1 |
HIP 55769 |
11.33 |
| 2026-03-31 12:00 |
11:25:47.62 |
+03:29:11.6 |
HIP 55769 |
11.30 |
| 2026-04-01 00:00 |
11:25:34.44 |
+03:30:18.9 |
HIP 55769 |
12.30 |
| 2026-04-01 12:00 |
11:25:21.32 |
+03:31:25.8 |
HIP 55769 |
14.10 |
| 2026-04-02 00:00 |
11:25:08.25 |
+03:32:32.4 |
HIP 55769 |
16.43 |
| 2026-04-02 12:00 |
11:24:55.23 |
+03:33:38.7 |
HIP 55638 |
16.21 |
| 2026-04-03 00:00 |
11:24:42.27 |
+03:34:44.6 |
HIP 55638 |
12.82 |
| 2026-04-03 12:00 |
11:24:29.37 |
+03:35:50.2 |
HIP 55638 |
9.46 |
| 2026-04-04 00:00 |
11:24:16.51 |
+03:36:55.5 |
HIP 55638 |
6.17 |
| 2026-04-04 12:00 |
11:24:03.72 |
+03:38:00.4 |
HIP 55638 |
3.09 |
| 2026-04-05 00:00 |
11:23:50.99 |
+03:39:04.9 |
HIP 55638 |
1.94 |
| 2026-04-05 12:00 |
11:23:38.31 |
+03:40:09.1 |
HIP 55638 |
4.51 |
| 2026-04-06 00:00 |
11:23:25.69 |
+03:41:13.0 |
HIP 55638 |
7.68 |
| 2026-04-06 12:00 |
11:23:13.14 |
+03:42:16.4 |
HIP 55638 |
10.93 |
| 2026-04-07 00:00 |
11:23:00.64 |
+03:43:19.5 |
HIP 55638 |
14.18 |
| 2026-04-07 12:00 |
11:22:48.21 |
+03:44:22.2 |
HIP 55638 |
17.43 |
| 2026-04-08 00:00 |
11:22:35.85 |
+03:45:24.5 |
HIP 55460 |
19.83 |
| 2026-04-08 12:00 |
11:22:23.54 |
+03:46:26.4 |
HIP 55460 |
16.72 |
| 2026-04-09 00:00 |
11:22:11.31 |
+03:47:27.9 |
HIP 55460 |
13.68 |
| 2026-04-09 12:00 |
11:21:59.13 |
+03:48:29.0 |
HIP 55460 |
10.76 |
| 2026-04-10 00:00 |
11:21:47.03 |
+03:49:29.8 |
HIP 55460 |
8.07 |
| 2026-04-10 12:00 |
11:21:34.99 |
+03:50:30.0 |
HIP 55460 |
5.92 |
| 2026-04-11 00:00 |
11:21:23.03 |
+03:51:29.9 |
HIP 55460 |
5.00 |
| 2026-04-11 12:00 |
11:21:11.13 |
+03:52:29.4 |
HIP 55460 |
5.88 |
| 2026-04-12 00:00 |
11:20:59.30 |
+03:53:28.4 |
HIP 55460 |
7.97 |
| 2026-04-12 12:00 |
11:20:47.54 |
+03:54:27.0 |
HIP 55460 |
10.56 |
| 2026-04-13 00:00 |
11:20:35.86 |
+03:55:25.1 |
HIP 55460 |
13.35 |
| 2026-04-13 12:00 |
11:20:24.25 |
+03:56:22.9 |
HIP 55460 |
16.22 |
| 2026-04-14 00:00 |
11:20:12.71 |
+03:57:20.1 |
HIP 55460 |
19.13 |
| 2026-04-14 12:00 |
11:20:01.25 |
+03:58:16.9 |
HIP 55324 |
21.43 |
| 2026-04-15 00:00 |
11:19:49.86 |
+03:59:13.3 |
HIP 55324 |
22.00 |
| 2026-04-15 12:00 |
11:19:38.55 |
+04:00:09.2 |
HIP 55324 |
22.94 |
| 2026-04-16 00:00 |
11:19:27.31 |
+04:01:04.6 |
HIP 55324 |
24.20 |