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 |
0.984 |
| gb |
-0.503 |
| k |
1.000 |
| δ90 |
9.996 |
| 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 |
05:39:14.20 |
+00:05:01.4 |
HIP 26526 |
17.54 |
| 2026-03-26 12:00 |
05:39:14.50 |
+00:05:18.5 |
HIP 26526 |
17.82 |
| 2026-03-27 00:00 |
05:39:14.83 |
+00:05:35.6 |
HIP 26526 |
18.09 |
| 2026-03-27 12:00 |
05:39:15.18 |
+00:05:52.7 |
HIP 26526 |
18.37 |
| 2026-03-28 00:00 |
05:39:15.55 |
+00:06:09.7 |
HIP 26526 |
18.66 |
| 2026-03-28 12:00 |
05:39:15.95 |
+00:06:26.7 |
HIP 26526 |
18.94 |
| 2026-03-29 00:00 |
05:39:16.37 |
+00:06:43.7 |
HIP 26526 |
19.24 |
| 2026-03-29 12:00 |
05:39:16.82 |
+00:07:00.7 |
HIP 26526 |
19.53 |
| 2026-03-30 00:00 |
05:39:17.30 |
+00:07:17.6 |
HIP 26526 |
19.83 |
| 2026-03-30 12:00 |
05:39:17.79 |
+00:07:34.5 |
HIP 26526 |
20.13 |
| 2026-03-31 00:00 |
05:39:18.32 |
+00:07:51.3 |
HIP 26526 |
20.44 |
| 2026-03-31 12:00 |
05:39:18.87 |
+00:08:08.1 |
HIP 26526 |
20.74 |
| 2026-04-01 00:00 |
05:39:19.44 |
+00:08:24.9 |
HIP 26526 |
21.05 |
| 2026-04-01 12:00 |
05:39:20.03 |
+00:08:41.7 |
HIP 26526 |
21.37 |
| 2026-04-02 00:00 |
05:39:20.66 |
+00:08:58.4 |
HIP 26526 |
21.69 |
| 2026-04-02 12:00 |
05:39:21.30 |
+00:09:15.0 |
HIP 26526 |
22.01 |
| 2026-04-03 00:00 |
05:39:21.97 |
+00:09:31.7 |
HIP 26526 |
22.33 |
| 2026-04-03 12:00 |
05:39:22.66 |
+00:09:48.3 |
HIP 26526 |
22.66 |
| 2026-04-04 00:00 |
05:39:23.38 |
+00:10:04.8 |
HIP 26526 |
22.98 |
| 2026-04-04 12:00 |
05:39:24.12 |
+00:10:21.3 |
HIP 26526 |
23.32 |
| 2026-04-05 00:00 |
05:39:24.89 |
+00:10:37.8 |
HIP 26526 |
23.65 |
| 2026-04-05 12:00 |
05:39:25.68 |
+00:10:54.2 |
HIP 26526 |
23.99 |
| 2026-04-06 00:00 |
05:39:26.49 |
+00:11:10.5 |
HIP 26526 |
24.33 |
| 2026-04-06 12:00 |
05:39:27.33 |
+00:11:26.9 |
HIP 26526 |
24.67 |
| 2026-04-07 00:00 |
05:39:28.19 |
+00:11:43.1 |
HIP 26526 |
25.02 |
| 2026-04-07 12:00 |
05:39:29.07 |
+00:11:59.3 |
HIP 26526 |
25.36 |
| 2026-04-08 00:00 |
05:39:29.98 |
+00:12:15.5 |
HIP 26762 |
25.21 |
| 2026-04-08 12:00 |
05:39:30.91 |
+00:12:31.6 |
HIP 26762 |
24.90 |
| 2026-04-09 00:00 |
05:39:31.86 |
+00:12:47.7 |
HIP 26762 |
24.59 |
| 2026-04-09 12:00 |
05:39:32.83 |
+00:13:03.7 |
HIP 26762 |
24.28 |
| 2026-04-10 00:00 |
05:39:33.83 |
+00:13:19.6 |
HIP 26762 |
23.96 |
| 2026-04-10 12:00 |
05:39:34.85 |
+00:13:35.5 |
HIP 26762 |
23.64 |
| 2026-04-11 00:00 |
05:39:35.90 |
+00:13:51.3 |
HIP 26762 |
23.32 |
| 2026-04-11 12:00 |
05:39:36.97 |
+00:14:07.1 |
HIP 26762 |
22.99 |
| 2026-04-12 00:00 |
05:39:38.06 |
+00:14:22.8 |
HIP 26762 |
22.66 |
| 2026-04-12 12:00 |
05:39:39.17 |
+00:14:38.5 |
HIP 26762 |
22.32 |
| 2026-04-13 00:00 |
05:39:40.30 |
+00:14:54.0 |
HIP 26762 |
21.98 |
| 2026-04-13 12:00 |
05:39:41.46 |
+00:15:09.6 |
HIP 26762 |
21.64 |
| 2026-04-14 00:00 |
05:39:42.64 |
+00:15:25.0 |
HIP 26762 |
21.30 |
| 2026-04-14 12:00 |
05:39:43.84 |
+00:15:40.4 |
HIP 26762 |
20.95 |
| 2026-04-15 00:00 |
05:39:45.06 |
+00:15:55.7 |
HIP 26762 |
20.59 |
| 2026-04-15 12:00 |
05:39:46.31 |
+00:16:11.0 |
HIP 26762 |
20.24 |
| 2026-04-16 00:00 |
05:39:47.57 |
+00:16:26.2 |
HIP 26762 |
19.88 |