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) |
| 2026-03-26 00:00 |
03:48:34.26 |
+65:58:20.9 |
HIP 17884 |
27.42 |
| 2026-03-26 12:00 |
03:48:43.37 |
+65:57:41.8 |
HIP 17884 |
26.59 |
| 2026-03-27 00:00 |
03:48:52.59 |
+65:57:03.1 |
HIP 17884 |
25.80 |
| 2026-03-27 12:00 |
03:49:01.90 |
+65:56:24.9 |
HIP 17884 |
25.04 |
| 2026-03-28 00:00 |
03:49:11.30 |
+65:55:47.2 |
HIP 17884 |
24.31 |
| 2026-03-28 12:00 |
03:49:20.80 |
+65:55:10.0 |
HIP 17884 |
23.63 |
| 2026-03-29 00:00 |
03:49:30.40 |
+65:54:33.3 |
HIP 17884 |
22.99 |
| 2026-03-29 12:00 |
03:49:40.09 |
+65:53:57.1 |
HIP 17884 |
22.41 |
| 2026-03-30 00:00 |
03:49:49.87 |
+65:53:21.4 |
HIP 17884 |
21.88 |
| 2026-03-30 12:00 |
03:49:59.74 |
+65:52:46.2 |
HIP 17884 |
21.41 |
| 2026-03-31 00:00 |
03:50:09.70 |
+65:52:11.4 |
HIP 17884 |
21.01 |
| 2026-03-31 12:00 |
03:50:19.75 |
+65:51:37.2 |
HIP 17884 |
20.67 |
| 2026-04-01 00:00 |
03:50:29.89 |
+65:51:03.5 |
HIP 17884 |
20.41 |
| 2026-04-01 12:00 |
03:50:40.12 |
+65:50:30.3 |
HIP 17884 |
20.23 |
| 2026-04-02 00:00 |
03:50:50.44 |
+65:49:57.5 |
HIP 17884 |
20.12 |
| 2026-04-02 12:00 |
03:51:00.84 |
+65:49:25.3 |
HIP 17884 |
20.10 |
| 2026-04-03 00:00 |
03:51:11.32 |
+65:48:53.6 |
HIP 18142 |
19.39 |
| 2026-04-03 12:00 |
03:51:21.90 |
+65:48:22.4 |
HIP 18142 |
18.42 |
| 2026-04-04 00:00 |
03:51:32.55 |
+65:47:51.7 |
HIP 18142 |
17.49 |
| 2026-04-04 12:00 |
03:51:43.29 |
+65:47:21.5 |
HIP 18142 |
16.60 |
| 2026-04-05 00:00 |
03:51:54.12 |
+65:46:51.8 |
HIP 18142 |
15.76 |
| 2026-04-05 12:00 |
03:52:05.02 |
+65:46:22.6 |
HIP 18142 |
14.97 |
| 2026-04-06 00:00 |
03:52:16.00 |
+65:45:53.9 |
HIP 18142 |
14.26 |
| 2026-04-06 12:00 |
03:52:27.07 |
+65:45:25.8 |
HIP 18142 |
13.62 |
| 2026-04-07 00:00 |
03:52:38.22 |
+65:44:58.1 |
HIP 18142 |
13.08 |
| 2026-04-07 12:00 |
03:52:49.44 |
+65:44:31.0 |
HIP 18142 |
12.65 |
| 2026-04-08 00:00 |
03:53:00.74 |
+65:44:04.3 |
HIP 18142 |
12.33 |
| 2026-04-08 12:00 |
03:53:12.12 |
+65:43:38.2 |
HIP 18142 |
12.15 |
| 2026-04-09 00:00 |
03:53:23.58 |
+65:43:12.6 |
HIP 18142 |
12.11 |
| 2026-04-09 12:00 |
03:53:35.11 |
+65:42:47.5 |
HIP 18142 |
12.20 |
| 2026-04-10 00:00 |
03:53:46.71 |
+65:42:22.9 |
HIP 18142 |
12.44 |
| 2026-04-10 12:00 |
03:53:58.39 |
+65:41:58.8 |
HIP 18142 |
12.81 |
| 2026-04-11 00:00 |
03:54:10.15 |
+65:41:35.3 |
HIP 18142 |
13.31 |
| 2026-04-11 12:00 |
03:54:21.98 |
+65:41:12.3 |
HIP 18142 |
13.91 |
| 2026-04-12 00:00 |
03:54:33.87 |
+65:40:49.8 |
HIP 18142 |
14.62 |
| 2026-04-12 12:00 |
03:54:45.84 |
+65:40:27.8 |
HIP 18142 |
15.41 |
| 2026-04-13 00:00 |
03:54:57.88 |
+65:40:06.3 |
HIP 18142 |
16.27 |
| 2026-04-13 12:00 |
03:55:09.99 |
+65:39:45.3 |
HIP 18142 |
17.20 |
| 2026-04-14 00:00 |
03:55:22.17 |
+65:39:24.9 |
HIP 18142 |
18.19 |
| 2026-04-14 12:00 |
03:55:34.42 |
+65:39:05.0 |
HIP 18142 |
19.22 |
| 2026-04-15 00:00 |
03:55:46.73 |
+65:38:45.6 |
HIP 18594 |
18.77 |
| 2026-04-15 12:00 |
03:55:59.11 |
+65:38:26.7 |
HIP 18594 |
17.46 |
| 2026-04-16 00:00 |
03:56:11.56 |
+65:38:08.4 |
HIP 18594 |
16.14 |