메타데이터
| 항목 |
값 |
| Designation |
C/2021 K3 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-02-02T08:11:00.119040Z |
| Orbit solution date (soln_date, UTC) |
2022-06-07T21:45:11Z |
| Obs used |
99 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-07-16.0000000 |
| e |
1.00356145 |
| q (au) |
5.230100 |
| a (au) |
-1468.531415 |
| i (deg) |
134.804408 |
| Ω (om, deg) |
114.441510 |
| ω (w, deg) |
181.948465 |
| M (ma, deg) |
-0.003526 |
밝기
산란 + 전체 선형
$$
M_a = (17.424 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.424 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.757 |
| 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) |
| 2026-06-01 00:00 |
10:48:10.54 |
-43:38:02.4 |
HIP 52811 |
10.80 |
| 2026-06-01 12:00 |
10:48:08.10 |
-43:35:34.9 |
HIP 52811 |
8.37 |
| 2026-06-02 00:00 |
10:48:05.77 |
-43:33:07.8 |
HIP 52811 |
6.02 |
| 2026-06-02 12:00 |
10:48:03.57 |
-43:30:41.3 |
HIP 52811 |
3.87 |
| 2026-06-03 00:00 |
10:48:01.47 |
-43:28:15.3 |
HIP 52811 |
2.45 |
| 2026-06-03 12:00 |
10:47:59.49 |
-43:25:49.8 |
HIP 52811 |
3.03 |
| 2026-06-04 00:00 |
10:47:57.62 |
-43:23:24.9 |
HIP 52811 |
4.94 |
| 2026-06-04 12:00 |
10:47:55.87 |
-43:21:00.5 |
HIP 52811 |
7.17 |
| 2026-06-05 00:00 |
10:47:54.23 |
-43:18:36.6 |
HIP 52811 |
9.49 |
| 2026-06-05 12:00 |
10:47:52.70 |
-43:16:13.4 |
HIP 52811 |
11.85 |
| 2026-06-06 00:00 |
10:47:51.28 |
-43:13:50.7 |
HIP 52709 |
13.70 |
| 2026-06-06 12:00 |
10:47:49.97 |
-43:11:28.5 |
HIP 52709 |
13.27 |
| 2026-06-07 00:00 |
10:47:48.77 |
-43:09:07.0 |
HIP 52709 |
13.29 |
| 2026-06-07 12:00 |
10:47:47.68 |
-43:06:46.0 |
HIP 52709 |
13.73 |
| 2026-06-08 00:00 |
10:47:46.71 |
-43:04:25.7 |
HIP 52709 |
14.55 |
| 2026-06-08 12:00 |
10:47:45.84 |
-43:02:05.9 |
HIP 52709 |
15.70 |
| 2026-06-09 00:00 |
10:47:45.08 |
-42:59:46.8 |
HIP 52709 |
17.10 |
| 2026-06-09 12:00 |
10:47:44.42 |
-42:57:28.3 |
HIP 52709 |
18.69 |
| 2026-06-10 00:00 |
10:47:43.88 |
-42:55:10.4 |
HIP 52709 |
20.42 |
| 2026-06-10 12:00 |
10:47:43.44 |
-42:52:53.2 |
HIP 52694 |
19.98 |
| 2026-06-11 00:00 |
10:47:43.11 |
-42:50:36.6 |
HIP 52694 |
18.37 |
| 2026-06-11 12:00 |
10:47:42.89 |
-42:48:20.6 |
HIP 52710 |
16.79 |
| 2026-06-12 00:00 |
10:47:42.77 |
-42:46:05.4 |
HIP 52710 |
15.28 |
| 2026-06-12 12:00 |
10:47:42.75 |
-42:43:50.8 |
HIP 52710 |
14.00 |
| 2026-06-13 00:00 |
10:47:42.84 |
-42:41:36.8 |
HIP 52710 |
13.01 |
| 2026-06-13 12:00 |
10:47:43.03 |
-42:39:23.5 |
HIP 52710 |
12.37 |
| 2026-06-14 00:00 |
10:47:43.33 |
-42:37:11.0 |
HIP 52710 |
12.13 |
| 2026-06-14 12:00 |
10:47:43.73 |
-42:34:59.1 |
HIP 52710 |
12.30 |
| 2026-06-15 00:00 |
10:47:44.23 |
-42:32:47.9 |
HIP 52710 |
12.87 |
| 2026-06-15 12:00 |
10:47:44.83 |
-42:30:37.5 |
HIP 52710 |
13.77 |
| 2026-06-16 00:00 |
10:47:45.54 |
-42:28:27.7 |
HIP 52710 |
14.96 |
| 2026-06-16 12:00 |
10:47:46.34 |
-42:26:18.7 |
HIP 52710 |
16.35 |
| 2026-06-17 00:00 |
10:47:47.24 |
-42:24:10.4 |
HIP 52710 |
17.89 |
| 2026-06-17 12:00 |
10:47:48.25 |
-42:22:02.8 |
HIP 52924 |
18.01 |
| 2026-06-18 00:00 |
10:47:49.35 |
-42:19:56.0 |
HIP 52924 |
17.93 |
| 2026-06-18 12:00 |
10:47:50.54 |
-42:17:50.0 |
HIP 52924 |
18.09 |
| 2026-06-19 00:00 |
10:47:51.84 |
-42:15:44.6 |
HIP 52924 |
18.47 |
| 2026-06-19 12:00 |
10:47:53.23 |
-42:13:40.1 |
HIP 52848 |
17.77 |
| 2026-06-20 00:00 |
10:47:54.72 |
-42:11:36.3 |
HIP 52848 |
15.73 |
| 2026-06-20 12:00 |
10:47:56.30 |
-42:09:33.2 |
HIP 52848 |
13.70 |
| 2026-06-21 00:00 |
10:47:57.97 |
-42:07:31.0 |
HIP 52848 |
11.70 |
| 2026-06-21 12:00 |
10:47:59.74 |
-42:05:29.5 |
HIP 52848 |
9.73 |
| 2026-06-22 00:00 |
10:48:01.60 |
-42:03:28.8 |
HIP 52848 |
7.79 |