메타데이터
| 항목 |
값 |
| Designation |
C/2005 K1 (Skiff) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-11-21T04:38:57.312960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:49Z |
| Obs used |
616 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
12.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-08-23.0000000 |
| e |
1.00329003 |
| q (au) |
3.692912 |
| a (au) |
-1122.454642 |
| i (deg) |
77.747578 |
| Ω (om, deg) |
106.305012 |
| ω (w, deg) |
134.938813 |
| M (ma, deg) |
-0.002364 |
밝기
산란 + 전체 선형
$$
M_a = (4.163 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.163 |
| n |
6.000 |
| gf |
1.000 |
| 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) |
| 2026-09-20 00:00 |
05:09:16.31 |
-53:28:52.9 |
HIP 23857 |
15.17 |
| 2026-09-20 12:00 |
05:09:15.61 |
-53:29:33.5 |
HIP 23857 |
14.88 |
| 2026-09-21 00:00 |
05:09:14.88 |
-53:30:14.1 |
HIP 23857 |
14.60 |
| 2026-09-21 12:00 |
05:09:14.10 |
-53:30:54.7 |
HIP 23857 |
14.35 |
| 2026-09-22 00:00 |
05:09:13.27 |
-53:31:35.2 |
HIP 23857 |
14.13 |
| 2026-09-22 12:00 |
05:09:12.41 |
-53:32:15.6 |
HIP 23857 |
13.92 |
| 2026-09-23 00:00 |
05:09:11.50 |
-53:32:56.0 |
HIP 23857 |
13.75 |
| 2026-09-23 12:00 |
05:09:10.55 |
-53:33:36.3 |
HIP 23857 |
13.60 |
| 2026-09-24 00:00 |
05:09:09.56 |
-53:34:16.5 |
HIP 23857 |
13.47 |
| 2026-09-24 12:00 |
05:09:08.52 |
-53:34:56.7 |
HIP 23857 |
13.37 |
| 2026-09-25 00:00 |
05:09:07.44 |
-53:35:36.8 |
HIP 23857 |
13.30 |
| 2026-09-25 12:00 |
05:09:06.32 |
-53:36:16.8 |
HIP 23857 |
13.27 |
| 2026-09-26 00:00 |
05:09:05.16 |
-53:36:56.7 |
HIP 23857 |
13.25 |
| 2026-09-26 12:00 |
05:09:03.95 |
-53:37:36.5 |
HIP 23857 |
13.27 |
| 2026-09-27 00:00 |
05:09:02.70 |
-53:38:16.2 |
HIP 23857 |
13.32 |
| 2026-09-27 12:00 |
05:09:01.41 |
-53:38:55.9 |
HIP 23857 |
13.40 |
| 2026-09-28 00:00 |
05:09:00.08 |
-53:39:35.4 |
HIP 23857 |
13.50 |
| 2026-09-28 12:00 |
05:08:58.70 |
-53:40:14.9 |
HIP 23857 |
13.64 |
| 2026-09-29 00:00 |
05:08:57.28 |
-53:40:54.3 |
HIP 23857 |
13.80 |
| 2026-09-29 12:00 |
05:08:55.82 |
-53:41:33.5 |
HIP 23857 |
13.98 |
| 2026-09-30 00:00 |
05:08:54.32 |
-53:42:12.7 |
HIP 23857 |
14.19 |
| 2026-09-30 12:00 |
05:08:52.78 |
-53:42:51.7 |
HIP 23857 |
14.43 |
| 2026-10-01 00:00 |
05:08:51.19 |
-53:43:30.6 |
HIP 23857 |
14.69 |
| 2026-10-01 12:00 |
05:08:49.56 |
-53:44:09.4 |
HIP 23857 |
14.97 |
| 2026-10-02 00:00 |
05:08:47.89 |
-53:44:48.1 |
HIP 23857 |
15.27 |
| 2026-10-02 12:00 |
05:08:46.18 |
-53:45:26.6 |
HIP 23857 |
15.59 |
| 2026-10-03 00:00 |
05:08:44.42 |
-53:46:05.1 |
HIP 23857 |
15.92 |
| 2026-10-03 12:00 |
05:08:42.63 |
-53:46:43.4 |
HIP 23857 |
16.28 |
| 2026-10-04 00:00 |
05:08:40.79 |
-53:47:21.6 |
HIP 23857 |
16.65 |
| 2026-10-04 12:00 |
05:08:38.91 |
-53:47:59.6 |
HIP 23857 |
17.04 |
| 2026-10-05 00:00 |
05:08:36.99 |
-53:48:37.5 |
HIP 23857 |
17.44 |
| 2026-10-05 12:00 |
05:08:35.03 |
-53:49:15.2 |
HIP 23857 |
17.85 |
| 2026-10-06 00:00 |
05:08:33.03 |
-53:49:52.8 |
HIP 23857 |
18.27 |
| 2026-10-06 12:00 |
05:08:30.98 |
-53:50:30.3 |
HIP 23857 |
18.71 |
| 2026-10-07 00:00 |
05:08:28.90 |
-53:51:07.6 |
HIP 23857 |
19.16 |
| 2026-10-07 12:00 |
05:08:26.77 |
-53:51:44.7 |
HIP 23857 |
19.61 |
| 2026-10-08 00:00 |
05:08:24.60 |
-53:52:21.7 |
HIP 23857 |
20.08 |
| 2026-10-08 12:00 |
05:08:22.40 |
-53:52:58.5 |
HIP 23857 |
20.56 |
| 2026-10-09 00:00 |
05:08:20.15 |
-53:53:35.2 |
HIP 23857 |
21.04 |
| 2026-10-09 12:00 |
05:08:17.86 |
-53:54:11.7 |
HIP 23857 |
21.53 |
| 2026-10-10 00:00 |
05:08:15.53 |
-53:54:48.0 |
HIP 23986 |
21.99 |
| 2026-10-10 12:00 |
05:08:13.16 |
-53:55:24.1 |
HIP 23986 |
21.61 |
| 2026-10-11 00:00 |
05:08:10.75 |
-53:56:00.0 |
HIP 23986 |
21.26 |