메타데이터
| 항목 |
값 |
| Designation |
C/2004 K1 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-07-05T02:28:32.972160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:41Z |
| Obs used |
1117 |
| NEO |
- |
| M1 |
7.900 |
| K1 |
11.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-05-10.0000000 |
| e |
0.99813226 |
| q (au) |
3.399147 |
| a (au) |
1819.922556 |
| i (deg) |
153.747520 |
| Ω (om, deg) |
326.923197 |
| ω (w, deg) |
97.751687 |
| M (ma, deg) |
359.999288 |
밝기
산란 + 전체 선형
$$
M_a = (8.179 + 3.575\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.179 |
| n |
3.575 |
| gf |
0.998 |
| gb |
-0.500 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
05:42:56.15 |
+00:32:42.3 |
HIP 27107 |
29.60 |
| 2026-06-01 12:00 |
05:42:58.74 |
+00:32:47.3 |
HIP 27107 |
28.95 |
| 2026-06-02 00:00 |
05:43:01.34 |
+00:32:52.2 |
HIP 27107 |
28.30 |
| 2026-06-02 12:00 |
05:43:03.94 |
+00:32:57.0 |
HIP 27107 |
27.65 |
| 2026-06-03 00:00 |
05:43:06.55 |
+00:33:01.6 |
HIP 27107 |
26.99 |
| 2026-06-03 12:00 |
05:43:09.16 |
+00:33:06.1 |
HIP 27107 |
26.34 |
| 2026-06-04 00:00 |
05:43:11.78 |
+00:33:10.4 |
HIP 27107 |
25.68 |
| 2026-06-04 12:00 |
05:43:14.41 |
+00:33:14.6 |
HIP 27107 |
25.02 |
| 2026-06-05 00:00 |
05:43:17.03 |
+00:33:18.7 |
HIP 27107 |
24.36 |
| 2026-06-05 12:00 |
05:43:19.67 |
+00:33:22.7 |
HIP 27107 |
23.70 |
| 2026-06-06 00:00 |
05:43:22.31 |
+00:33:26.5 |
HIP 27107 |
23.04 |
| 2026-06-06 12:00 |
05:43:24.95 |
+00:33:30.1 |
HIP 27107 |
22.38 |
| 2026-06-07 00:00 |
05:43:27.59 |
+00:33:33.7 |
HIP 27107 |
21.72 |
| 2026-06-07 12:00 |
05:43:30.25 |
+00:33:37.1 |
HIP 27107 |
21.06 |
| 2026-06-08 00:00 |
05:43:32.90 |
+00:33:40.3 |
HIP 27107 |
20.39 |
| 2026-06-08 12:00 |
05:43:35.56 |
+00:33:43.4 |
HIP 27107 |
19.73 |
| 2026-06-09 00:00 |
05:43:38.22 |
+00:33:46.4 |
HIP 27107 |
19.06 |
| 2026-06-09 12:00 |
05:43:40.88 |
+00:33:49.2 |
HIP 27107 |
18.40 |
| 2026-06-10 00:00 |
05:43:43.55 |
+00:33:51.9 |
HIP 27107 |
17.73 |
| 2026-06-10 12:00 |
05:43:46.22 |
+00:33:54.5 |
HIP 27107 |
17.06 |
| 2026-06-11 00:00 |
05:43:48.90 |
+00:33:56.9 |
HIP 27107 |
16.39 |
| 2026-06-11 12:00 |
05:43:51.57 |
+00:33:59.2 |
HIP 27107 |
15.72 |
| 2026-06-12 00:00 |
05:43:54.25 |
+00:34:01.3 |
HIP 27107 |
15.06 |
| 2026-06-12 12:00 |
05:43:56.93 |
+00:34:03.3 |
HIP 27107 |
14.39 |
| 2026-06-13 00:00 |
05:43:59.62 |
+00:34:05.1 |
HIP 27107 |
13.72 |
| 2026-06-13 12:00 |
05:44:02.30 |
+00:34:06.8 |
HIP 27107 |
13.04 |
| 2026-06-14 00:00 |
05:44:04.99 |
+00:34:08.4 |
HIP 27107 |
12.37 |
| 2026-06-14 12:00 |
05:44:07.68 |
+00:34:09.8 |
HIP 27107 |
11.70 |
| 2026-06-15 00:00 |
05:44:10.37 |
+00:34:11.1 |
HIP 27107 |
11.03 |
| 2026-06-15 12:00 |
05:44:13.06 |
+00:34:12.3 |
HIP 27107 |
10.36 |
| 2026-06-16 00:00 |
05:44:15.75 |
+00:34:13.2 |
HIP 27107 |
9.69 |
| 2026-06-16 12:00 |
05:44:18.44 |
+00:34:14.1 |
HIP 27107 |
9.02 |
| 2026-06-17 00:00 |
05:44:21.13 |
+00:34:14.8 |
HIP 27107 |
8.35 |
| 2026-06-17 12:00 |
05:44:23.82 |
+00:34:15.4 |
HIP 27107 |
7.67 |
| 2026-06-18 00:00 |
05:44:26.51 |
+00:34:15.8 |
HIP 27107 |
7.00 |
| 2026-06-18 12:00 |
05:44:29.20 |
+00:34:16.1 |
HIP 27107 |
6.33 |
| 2026-06-19 00:00 |
05:44:31.89 |
+00:34:16.2 |
HIP 27107 |
5.66 |
| 2026-06-19 12:00 |
05:44:34.58 |
+00:34:16.2 |
HIP 27107 |
4.99 |
| 2026-06-20 00:00 |
05:44:37.27 |
+00:34:16.1 |
HIP 27107 |
4.32 |
| 2026-06-20 12:00 |
05:44:39.96 |
+00:34:15.8 |
HIP 27107 |
3.65 |
| 2026-06-21 00:00 |
05:44:42.64 |
+00:34:15.4 |
HIP 27107 |
2.99 |
| 2026-06-21 12:00 |
05:44:45.33 |
+00:34:14.8 |
HIP 27107 |
2.32 |
| 2026-06-22 00:00 |
05:44:48.01 |
+00:34:14.1 |
HIP 27107 |
1.67 |