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) |
| 2026-05-12 00:00 |
20:24:54.06 |
-08:20:15.0 |
HIP 100680 |
26.02 |
| 2026-05-12 12:00 |
20:24:53.46 |
-08:20:10.2 |
HIP 100680 |
26.09 |
| 2026-05-13 00:00 |
20:24:52.83 |
-08:20:05.5 |
HIP 100680 |
26.16 |
| 2026-05-13 12:00 |
20:24:52.19 |
-08:20:00.9 |
HIP 100680 |
26.22 |
| 2026-05-14 00:00 |
20:24:51.53 |
-08:19:56.4 |
HIP 100680 |
26.28 |
| 2026-05-14 12:00 |
20:24:50.84 |
-08:19:52.0 |
HIP 100680 |
26.35 |
| 2026-05-15 00:00 |
20:24:50.13 |
-08:19:47.7 |
HIP 100680 |
26.41 |
| 2026-05-15 12:00 |
20:24:49.41 |
-08:19:43.4 |
HIP 100680 |
26.47 |
| 2026-05-16 00:00 |
20:24:48.66 |
-08:19:39.3 |
HIP 100680 |
26.53 |
| 2026-05-16 12:00 |
20:24:47.89 |
-08:19:35.3 |
HIP 100680 |
26.59 |
| 2026-05-17 00:00 |
20:24:47.10 |
-08:19:31.3 |
HIP 100680 |
26.65 |
| 2026-05-17 12:00 |
20:24:46.29 |
-08:19:27.5 |
HIP 100680 |
26.71 |
| 2026-05-18 00:00 |
20:24:45.46 |
-08:19:23.7 |
HIP 100680 |
26.77 |
| 2026-05-18 12:00 |
20:24:44.61 |
-08:19:20.0 |
HIP 100680 |
26.83 |
| 2026-05-19 00:00 |
20:24:43.74 |
-08:19:16.5 |
HIP 100680 |
26.89 |
| 2026-05-19 12:00 |
20:24:42.85 |
-08:19:13.0 |
HIP 100680 |
26.95 |
| 2026-05-20 00:00 |
20:24:41.93 |
-08:19:09.6 |
HIP 100680 |
27.01 |
| 2026-05-20 12:00 |
20:24:41.00 |
-08:19:06.3 |
HIP 100680 |
27.07 |
| 2026-05-21 00:00 |
20:24:40.05 |
-08:19:03.2 |
HIP 100680 |
27.14 |
| 2026-05-21 12:00 |
20:24:39.08 |
-08:19:00.1 |
HIP 100680 |
27.20 |
| 2026-05-22 00:00 |
20:24:38.09 |
-08:18:57.1 |
HIP 100680 |
27.26 |
| 2026-05-22 12:00 |
20:24:37.08 |
-08:18:54.2 |
HIP 100680 |
27.33 |
| 2026-05-23 00:00 |
20:24:36.05 |
-08:18:51.4 |
HIP 100680 |
27.39 |
| 2026-05-23 12:00 |
20:24:35.00 |
-08:18:48.7 |
HIP 100680 |
27.46 |
| 2026-05-24 00:00 |
20:24:33.93 |
-08:18:46.1 |
HIP 100680 |
27.52 |
| 2026-05-24 12:00 |
20:24:32.84 |
-08:18:43.6 |
HIP 100680 |
27.59 |
| 2026-05-25 00:00 |
20:24:31.73 |
-08:18:41.1 |
HIP 100680 |
27.66 |
| 2026-05-25 12:00 |
20:24:30.60 |
-08:18:38.8 |
HIP 100680 |
27.73 |
| 2026-05-26 00:00 |
20:24:29.46 |
-08:18:36.6 |
HIP 100680 |
27.81 |
| 2026-05-26 12:00 |
20:24:28.29 |
-08:18:34.5 |
HIP 100680 |
27.88 |
| 2026-05-27 00:00 |
20:24:27.11 |
-08:18:32.5 |
HIP 100680 |
27.96 |
| 2026-05-27 12:00 |
20:24:25.91 |
-08:18:30.5 |
HIP 100680 |
28.04 |
| 2026-05-28 00:00 |
20:24:24.69 |
-08:18:28.7 |
HIP 100680 |
28.12 |
| 2026-05-28 12:00 |
20:24:23.45 |
-08:18:27.0 |
HIP 100680 |
28.20 |
| 2026-05-29 00:00 |
20:24:22.19 |
-08:18:25.3 |
HIP 100680 |
28.29 |
| 2026-05-29 12:00 |
20:24:20.91 |
-08:18:23.8 |
HIP 100680 |
28.38 |
| 2026-05-30 00:00 |
20:24:19.62 |
-08:18:22.4 |
HIP 100680 |
28.47 |
| 2026-05-30 12:00 |
20:24:18.30 |
-08:18:21.0 |
HIP 100680 |
28.56 |
| 2026-05-31 00:00 |
20:24:16.97 |
-08:18:19.8 |
HIP 100680 |
28.66 |
| 2026-05-31 12:00 |
20:24:15.62 |
-08:18:18.6 |
HIP 100680 |
28.76 |
| 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 |