메타데이터
| 항목 |
값 |
| Designation |
C/2020 H6 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-10-01T01:15:36.267840Z |
| Orbit solution date (soln_date, UTC) |
2024-05-30T01:12:18Z |
| Obs used |
2087 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
8.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2020-04-22T08:13:58.051200Z |
| Discovery magnitude (MPC) |
18.18 c |
| Discovery observatory (MPC) |
T05 · ATLAS-HKO, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-01-06.0000000 |
| e |
1.00057173 |
| q (au) |
4.702870 |
| a (au) |
-8225.630152 |
| i (deg) |
79.970760 |
| Ω (om, deg) |
213.708285 |
| ω (w, deg) |
20.344638 |
| M (ma, deg) |
0.000128 |
밝기
산란 + 전체 선형
$$
M_a = (6.961 + 3.055\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.961 |
| n |
3.055 |
| gf |
1.000 |
| gb |
-0.826 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2020-04-22 |
2021-08-23 |
+6.7895 |
-4.410 |
| 2021-12-16 |
2023-03-02 |
-3.6428 |
+2.331 |
| 2023-03-02 |
2024-01-08 |
+10.1727 |
-8.400 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
23:34:10.40 |
+55:13:47.3 |
HIP 116324 |
15.54 |
| 2026-06-01 12:00 |
23:34:16.31 |
+55:15:23.8 |
HIP 116324 |
13.97 |
| 2026-06-02 00:00 |
23:34:22.12 |
+55:17:00.3 |
HIP 116324 |
12.46 |
| 2026-06-02 12:00 |
23:34:27.81 |
+55:18:36.8 |
HIP 116324 |
11.03 |
| 2026-06-03 00:00 |
23:34:33.39 |
+55:20:13.2 |
HIP 116324 |
9.73 |
| 2026-06-03 12:00 |
23:34:38.86 |
+55:21:49.6 |
HIP 116324 |
8.60 |
| 2026-06-04 00:00 |
23:34:44.22 |
+55:23:25.9 |
HIP 116324 |
7.70 |
| 2026-06-04 12:00 |
23:34:49.46 |
+55:25:02.2 |
HIP 116324 |
7.13 |
| 2026-06-05 00:00 |
23:34:54.60 |
+55:26:38.4 |
HIP 116324 |
6.96 |
| 2026-06-05 12:00 |
23:34:59.62 |
+55:28:14.6 |
HIP 116324 |
7.21 |
| 2026-06-06 00:00 |
23:35:04.53 |
+55:29:50.6 |
HIP 116324 |
7.84 |
| 2026-06-06 12:00 |
23:35:09.32 |
+55:31:26.6 |
HIP 116324 |
8.76 |
| 2026-06-07 00:00 |
23:35:14.00 |
+55:33:02.5 |
HIP 116324 |
9.88 |
| 2026-06-07 12:00 |
23:35:18.57 |
+55:34:38.3 |
HIP 116497 |
10.61 |
| 2026-06-08 00:00 |
23:35:23.02 |
+55:36:14.0 |
HIP 116497 |
10.92 |
| 2026-06-08 12:00 |
23:35:27.35 |
+55:37:49.5 |
HIP 116497 |
11.49 |
| 2026-06-09 00:00 |
23:35:31.57 |
+55:39:25.0 |
HIP 116497 |
12.28 |
| 2026-06-09 12:00 |
23:35:35.68 |
+55:41:00.3 |
HIP 116497 |
13.25 |
| 2026-06-10 00:00 |
23:35:39.67 |
+55:42:35.5 |
HIP 116497 |
14.36 |
| 2026-06-10 12:00 |
23:35:43.54 |
+55:44:10.5 |
HIP 116549 |
15.04 |
| 2026-06-11 00:00 |
23:35:47.29 |
+55:45:45.4 |
HIP 116549 |
13.75 |
| 2026-06-11 12:00 |
23:35:50.92 |
+55:47:20.2 |
HIP 116549 |
12.57 |
| 2026-06-12 00:00 |
23:35:54.44 |
+55:48:54.8 |
HIP 116549 |
11.53 |
| 2026-06-12 12:00 |
23:35:57.84 |
+55:50:29.2 |
HIP 116549 |
10.65 |
| 2026-06-13 00:00 |
23:36:01.12 |
+55:52:03.4 |
HIP 116549 |
9.99 |
| 2026-06-13 12:00 |
23:36:04.28 |
+55:53:37.5 |
HIP 116549 |
9.59 |
| 2026-06-14 00:00 |
23:36:07.32 |
+55:55:11.3 |
HIP 116549 |
9.46 |
| 2026-06-14 12:00 |
23:36:10.24 |
+55:56:45.0 |
HIP 116549 |
9.63 |
| 2026-06-15 00:00 |
23:36:13.04 |
+55:58:18.4 |
HIP 116549 |
10.07 |
| 2026-06-15 12:00 |
23:36:15.72 |
+55:59:51.7 |
HIP 116549 |
10.74 |
| 2026-06-16 00:00 |
23:36:18.28 |
+56:01:24.7 |
HIP 116549 |
11.61 |
| 2026-06-16 12:00 |
23:36:20.72 |
+56:02:57.4 |
HIP 116549 |
12.62 |
| 2026-06-17 00:00 |
23:36:23.03 |
+56:04:30.0 |
HIP 116549 |
13.75 |
| 2026-06-17 12:00 |
23:36:25.23 |
+56:06:02.2 |
HIP 116549 |
14.96 |
| 2026-06-18 00:00 |
23:36:27.30 |
+56:07:34.3 |
HIP 116549 |
16.24 |
| 2026-06-18 12:00 |
23:36:29.25 |
+56:09:06.0 |
HIP 116549 |
17.56 |
| 2026-06-19 00:00 |
23:36:31.08 |
+56:10:37.5 |
HIP 116549 |
18.92 |
| 2026-06-19 12:00 |
23:36:32.79 |
+56:12:08.7 |
HIP 116549 |
20.31 |
| 2026-06-20 00:00 |
23:36:34.37 |
+56:13:39.6 |
HIP 116549 |
21.72 |
| 2026-06-20 12:00 |
23:36:35.83 |
+56:15:10.3 |
HIP 116549 |
23.14 |
| 2026-06-21 00:00 |
23:36:37.17 |
+56:16:40.6 |
HIP 116549 |
24.57 |
| 2026-06-21 12:00 |
23:36:38.39 |
+56:18:10.6 |
HIP 116549 |
26.01 |
| 2026-06-22 00:00 |
23:36:39.48 |
+56:19:40.3 |
HIP 116549 |
27.46 |