메타데이터
| 항목 |
값 |
| Designation |
C/2000 Y2 (Skiff) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-03-21T19:21:55.632960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:08Z |
| Obs used |
159 |
| NEO |
- |
| M1 |
14.400 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2001-02-15.0000000 |
| e |
0.99434819 |
| q (au) |
2.768707 |
| a (au) |
489.879307 |
| i (deg) |
12.087438 |
| Ω (om, deg) |
185.848328 |
| ω (w, deg) |
326.817997 |
| M (ma, deg) |
359.996836 |
밝기
산란 + 전체 선형
$$
M_a = (13.823 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.823 |
| n |
2.000 |
| gf |
0.942 |
| gb |
-1.000 |
| k |
0.999 |
| δ90 |
1.000 |
| 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 |
20:24:14.26 |
-08:18:17.6 |
HIP 100680 |
28.86 |
| 2026-06-01 12:00 |
20:24:12.87 |
-08:18:16.6 |
HIP 100680 |
28.96 |
| 2026-06-02 00:00 |
20:24:11.47 |
-08:18:15.8 |
HIP 100680 |
29.07 |
| 2026-06-02 12:00 |
20:24:10.05 |
-08:18:15.0 |
HIP 100680 |
29.19 |
| 2026-06-03 00:00 |
20:24:08.61 |
-08:18:14.4 |
HIP 100680 |
29.30 |
| 2026-06-03 12:00 |
20:24:07.16 |
-08:18:13.8 |
HIP 100680 |
29.42 |
| 2026-06-04 00:00 |
20:24:05.69 |
-08:18:13.3 |
HIP 100680 |
29.55 |
| 2026-06-04 12:00 |
20:24:04.20 |
-08:18:13.0 |
HIP 100680 |
29.67 |
| 2026-06-05 00:00 |
20:24:02.69 |
-08:18:12.7 |
HIP 100680 |
29.80 |
| 2026-06-05 12:00 |
20:24:01.17 |
-08:18:12.5 |
HIP 100680 |
29.94 |
| 2026-06-06 00:00 |
20:23:59.63 |
-08:18:12.5 |
HIP 100680 |
30.08 |
| 2026-06-06 12:00 |
20:23:58.07 |
-08:18:12.5 |
HIP 100680 |
30.22 |
| 2026-06-07 00:00 |
20:23:56.50 |
-08:18:12.6 |
HIP 100680 |
30.37 |
| 2026-06-07 12:00 |
20:23:54.91 |
-08:18:12.9 |
HIP 100680 |
30.52 |
| 2026-06-08 00:00 |
20:23:53.31 |
-08:18:13.2 |
HIP 100680 |
30.68 |
| 2026-06-08 12:00 |
20:23:51.68 |
-08:18:13.6 |
HIP 100680 |
30.84 |
| 2026-06-09 00:00 |
20:23:50.05 |
-08:18:14.1 |
HIP 100680 |
31.01 |
| 2026-06-09 12:00 |
20:23:48.39 |
-08:18:14.8 |
HIP 100680 |
31.18 |
| 2026-06-10 00:00 |
20:23:46.72 |
-08:18:15.5 |
HIP 100680 |
31.35 |
| 2026-06-10 12:00 |
20:23:45.03 |
-08:18:16.3 |
HIP 100680 |
31.53 |
| 2026-06-11 00:00 |
20:23:43.33 |
-08:18:17.2 |
HIP 100680 |
31.72 |
| 2026-06-11 12:00 |
20:23:41.62 |
-08:18:18.2 |
HIP 100680 |
31.91 |
| 2026-06-12 00:00 |
20:23:39.88 |
-08:18:19.4 |
HIP 100680 |
32.10 |
| 2026-06-12 12:00 |
20:23:38.14 |
-08:18:20.6 |
HIP 100680 |
32.30 |
| 2026-06-13 00:00 |
20:23:36.37 |
-08:18:21.9 |
HIP 100680 |
32.51 |
| 2026-06-13 12:00 |
20:23:34.59 |
-08:18:23.3 |
HIP 100680 |
32.72 |
| 2026-06-14 00:00 |
20:23:32.80 |
-08:18:24.8 |
HIP 100680 |
32.93 |
| 2026-06-14 12:00 |
20:23:30.99 |
-08:18:26.4 |
HIP 100680 |
33.15 |
| 2026-06-15 00:00 |
20:23:29.17 |
-08:18:28.1 |
HIP 100680 |
33.38 |
| 2026-06-15 12:00 |
20:23:27.34 |
-08:18:29.9 |
HIP 100481 |
33.61 |
| 2026-06-16 00:00 |
20:23:25.49 |
-08:18:31.8 |
HIP 100481 |
33.40 |
| 2026-06-16 12:00 |
20:23:23.62 |
-08:18:33.8 |
HIP 100481 |
33.20 |
| 2026-06-17 00:00 |
20:23:21.74 |
-08:18:35.9 |
HIP 100481 |
33.00 |
| 2026-06-17 12:00 |
20:23:19.85 |
-08:18:38.1 |
HIP 100481 |
32.81 |
| 2026-06-18 00:00 |
20:23:17.94 |
-08:18:40.4 |
HIP 100481 |
32.62 |
| 2026-06-18 12:00 |
20:23:16.02 |
-08:18:42.8 |
HIP 100481 |
32.43 |
| 2026-06-19 00:00 |
20:23:14.09 |
-08:18:45.3 |
HIP 100481 |
32.24 |
| 2026-06-19 12:00 |
20:23:12.14 |
-08:18:47.9 |
HIP 100481 |
32.06 |
| 2026-06-20 00:00 |
20:23:10.19 |
-08:18:50.6 |
HIP 100481 |
31.88 |
| 2026-06-20 12:00 |
20:23:08.21 |
-08:18:53.3 |
HIP 100481 |
31.71 |
| 2026-06-21 00:00 |
20:23:06.23 |
-08:18:56.2 |
HIP 100481 |
31.54 |
| 2026-06-21 12:00 |
20:23:04.23 |
-08:18:59.2 |
HIP 100481 |
31.37 |
| 2026-06-22 00:00 |
20:23:02.23 |
-08:19:02.2 |
HIP 100481 |
31.21 |