메타데이터
| 항목 |
값 |
| Designation |
C/2019 K1 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2020-02-12T20:54:28.042560Z |
| Orbit solution date (soln_date, UTC) |
2022-07-19T01:12:15Z |
| Obs used |
274 |
| NEO |
- |
| M1 |
13.200 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-05-16T11:34:46.531200Z |
| Discovery magnitude (MPC) |
17.18 o |
| Discovery observatory (MPC) |
T08 · ATLAS-MLO, Mauna Loa |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-06-12.0000000 |
| e |
1.00056186 |
| q (au) |
2.012738 |
| a (au) |
-3582.254853 |
| i (deg) |
87.157348 |
| Ω (om, deg) |
73.377584 |
| ω (w, deg) |
265.682376 |
| M (ma, deg) |
-0.001130 |
밝기
산란 + 전체 선형
$$
M_a = (15.125 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.125 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.684 |
| 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) |
| 2026-07-29 00:00 |
04:43:36.64 |
+67:26:41.2 |
HIP 21877 |
12.25 |
| 2026-07-29 12:00 |
04:43:46.06 |
+67:27:53.1 |
HIP 21877 |
13.74 |
| 2026-07-30 00:00 |
04:43:55.39 |
+67:29:05.3 |
HIP 21877 |
15.23 |
| 2026-07-30 12:00 |
04:44:04.61 |
+67:30:17.7 |
HIP 21877 |
16.72 |
| 2026-07-31 00:00 |
04:44:13.75 |
+67:31:30.4 |
HIP 21877 |
18.21 |
| 2026-07-31 12:00 |
04:44:22.78 |
+67:32:43.3 |
HIP 21877 |
19.70 |
| 2026-08-01 00:00 |
04:44:31.72 |
+67:33:56.5 |
HIP 21877 |
21.18 |
| 2026-08-01 12:00 |
04:44:40.55 |
+67:35:09.9 |
HIP 21877 |
22.66 |
| 2026-08-02 00:00 |
04:44:49.29 |
+67:36:23.5 |
HIP 22312 |
22.06 |
| 2026-08-02 12:00 |
04:44:57.93 |
+67:37:37.5 |
HIP 22312 |
20.80 |
| 2026-08-03 00:00 |
04:45:06.46 |
+67:38:51.6 |
HIP 22312 |
19.58 |
| 2026-08-03 12:00 |
04:45:14.89 |
+67:40:06.0 |
HIP 22312 |
18.40 |
| 2026-08-04 00:00 |
04:45:23.22 |
+67:41:20.6 |
HIP 22312 |
17.28 |
| 2026-08-04 12:00 |
04:45:31.45 |
+67:42:35.5 |
HIP 22312 |
16.23 |
| 2026-08-05 00:00 |
04:45:39.57 |
+67:43:50.6 |
HIP 22312 |
15.26 |
| 2026-08-05 12:00 |
04:45:47.58 |
+67:45:05.9 |
HIP 22312 |
14.39 |
| 2026-08-06 00:00 |
04:45:55.49 |
+67:46:21.5 |
HIP 22312 |
13.63 |
| 2026-08-06 12:00 |
04:46:03.29 |
+67:47:37.3 |
HIP 22312 |
13.00 |
| 2026-08-07 00:00 |
04:46:10.98 |
+67:48:53.3 |
HIP 22312 |
12.52 |
| 2026-08-07 12:00 |
04:46:18.57 |
+67:50:09.5 |
HIP 22312 |
12.22 |
| 2026-08-08 00:00 |
04:46:26.04 |
+67:51:25.9 |
HIP 22312 |
12.09 |
| 2026-08-08 12:00 |
04:46:33.40 |
+67:52:42.5 |
HIP 22312 |
12.16 |
| 2026-08-09 00:00 |
04:46:40.64 |
+67:53:59.4 |
HIP 22312 |
12.40 |
| 2026-08-09 12:00 |
04:46:47.78 |
+67:55:16.4 |
HIP 22312 |
12.82 |
| 2026-08-10 00:00 |
04:46:54.80 |
+67:56:33.7 |
HIP 22312 |
13.39 |
| 2026-08-10 12:00 |
04:47:01.70 |
+67:57:51.1 |
HIP 22312 |
14.09 |
| 2026-08-11 00:00 |
04:47:08.49 |
+67:59:08.7 |
HIP 22312 |
14.92 |
| 2026-08-11 12:00 |
04:47:15.16 |
+68:00:26.6 |
HIP 22312 |
15.83 |
| 2026-08-12 00:00 |
04:47:21.71 |
+68:01:44.6 |
HIP 22312 |
16.83 |
| 2026-08-12 12:00 |
04:47:28.15 |
+68:03:02.8 |
HIP 22312 |
17.90 |
| 2026-08-13 00:00 |
04:47:34.46 |
+68:04:21.2 |
HIP 22312 |
19.02 |
| 2026-08-13 12:00 |
04:47:40.66 |
+68:05:39.7 |
HIP 22312 |
20.18 |
| 2026-08-14 00:00 |
04:47:46.73 |
+68:06:58.5 |
HIP 22552 |
19.49 |
| 2026-08-14 12:00 |
04:47:52.68 |
+68:08:17.3 |
HIP 22552 |
18.76 |
| 2026-08-15 00:00 |
04:47:58.50 |
+68:09:36.4 |
HIP 22552 |
18.13 |
| 2026-08-15 12:00 |
04:48:04.20 |
+68:10:55.6 |
HIP 22552 |
17.60 |
| 2026-08-16 00:00 |
04:48:09.78 |
+68:12:15.0 |
HIP 22552 |
17.18 |
| 2026-08-16 12:00 |
04:48:15.23 |
+68:13:34.5 |
HIP 22552 |
16.89 |
| 2026-08-17 00:00 |
04:48:20.56 |
+68:14:54.2 |
HIP 22552 |
16.73 |
| 2026-08-17 12:00 |
04:48:25.75 |
+68:16:14.0 |
HIP 22552 |
16.70 |
| 2026-08-18 00:00 |
04:48:30.82 |
+68:17:34.0 |
HIP 22552 |
16.81 |
| 2026-08-18 12:00 |
04:48:35.76 |
+68:18:54.1 |
HIP 22552 |
17.04 |
| 2026-08-19 00:00 |
04:48:40.58 |
+68:20:14.3 |
HIP 22552 |
17.39 |