메타데이터
| 항목 |
값 |
| Designation |
C/2001 K3 (Skiff) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-04-22T21:02:11.837760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:09Z |
| Obs used |
331 |
| NEO |
- |
| M1 |
12.100 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2001-07-19.0000000 |
| e |
0.99893567 |
| q (au) |
3.060125 |
| a (au) |
2875.163026 |
| i (deg) |
52.026577 |
| Ω (om, deg) |
289.850117 |
| ω (w, deg) |
3.452328 |
| M (ma, deg) |
0.000557 |
밝기
산란 + 전체 선형
$$
M_a = (14.428 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.428 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.752 |
| k |
0.800 |
| 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 |
06:21:32.50 |
+43:48:35.5 |
HIP 30267 |
15.80 |
| 2026-09-20 12:00 |
06:21:33.05 |
+43:48:47.1 |
HIP 30267 |
15.58 |
| 2026-09-21 00:00 |
06:21:33.56 |
+43:48:58.7 |
HIP 30267 |
15.37 |
| 2026-09-21 12:00 |
06:21:34.05 |
+43:49:10.4 |
HIP 30267 |
15.16 |
| 2026-09-22 00:00 |
06:21:34.50 |
+43:49:22.1 |
HIP 30267 |
14.95 |
| 2026-09-22 12:00 |
06:21:34.92 |
+43:49:33.8 |
HIP 30267 |
14.74 |
| 2026-09-23 00:00 |
06:21:35.32 |
+43:49:45.6 |
HIP 30267 |
14.53 |
| 2026-09-23 12:00 |
06:21:35.68 |
+43:49:57.3 |
HIP 30267 |
14.32 |
| 2026-09-24 00:00 |
06:21:36.02 |
+43:50:09.1 |
HIP 30267 |
14.12 |
| 2026-09-24 12:00 |
06:21:36.32 |
+43:50:20.9 |
HIP 30267 |
13.91 |
| 2026-09-25 00:00 |
06:21:36.59 |
+43:50:32.8 |
HIP 30267 |
13.71 |
| 2026-09-25 12:00 |
06:21:36.84 |
+43:50:44.7 |
HIP 30267 |
13.51 |
| 2026-09-26 00:00 |
06:21:37.05 |
+43:50:56.5 |
HIP 30267 |
13.31 |
| 2026-09-26 12:00 |
06:21:37.23 |
+43:51:08.4 |
HIP 30267 |
13.11 |
| 2026-09-27 00:00 |
06:21:37.38 |
+43:51:20.4 |
HIP 30267 |
12.91 |
| 2026-09-27 12:00 |
06:21:37.50 |
+43:51:32.3 |
HIP 30267 |
12.72 |
| 2026-09-28 00:00 |
06:21:37.59 |
+43:51:44.3 |
HIP 30267 |
12.52 |
| 2026-09-28 12:00 |
06:21:37.65 |
+43:51:56.2 |
HIP 30267 |
12.33 |
| 2026-09-29 00:00 |
06:21:37.68 |
+43:52:08.2 |
HIP 30267 |
12.14 |
| 2026-09-29 12:00 |
06:21:37.68 |
+43:52:20.2 |
HIP 30267 |
11.96 |
| 2026-09-30 00:00 |
06:21:37.65 |
+43:52:32.2 |
HIP 30267 |
11.77 |
| 2026-09-30 12:00 |
06:21:37.59 |
+43:52:44.3 |
HIP 30267 |
11.59 |
| 2026-10-01 00:00 |
06:21:37.49 |
+43:52:56.3 |
HIP 30267 |
11.41 |
| 2026-10-01 12:00 |
06:21:37.37 |
+43:53:08.4 |
HIP 30267 |
11.23 |
| 2026-10-02 00:00 |
06:21:37.21 |
+43:53:20.4 |
HIP 30267 |
11.06 |
| 2026-10-02 12:00 |
06:21:37.03 |
+43:53:32.5 |
HIP 30267 |
10.89 |
| 2026-10-03 00:00 |
06:21:36.81 |
+43:53:44.6 |
HIP 30267 |
10.72 |
| 2026-10-03 12:00 |
06:21:36.56 |
+43:53:56.6 |
HIP 30267 |
10.55 |
| 2026-10-04 00:00 |
06:21:36.28 |
+43:54:08.7 |
HIP 30267 |
10.39 |
| 2026-10-04 12:00 |
06:21:35.98 |
+43:54:20.8 |
HIP 30267 |
10.24 |
| 2026-10-05 00:00 |
06:21:35.63 |
+43:54:32.9 |
HIP 30267 |
10.08 |
| 2026-10-05 12:00 |
06:21:35.26 |
+43:54:45.0 |
HIP 30267 |
9.94 |
| 2026-10-06 00:00 |
06:21:34.86 |
+43:54:57.1 |
HIP 30267 |
9.79 |
| 2026-10-06 12:00 |
06:21:34.43 |
+43:55:09.2 |
HIP 30267 |
9.66 |
| 2026-10-07 00:00 |
06:21:33.96 |
+43:55:21.3 |
HIP 30267 |
9.53 |
| 2026-10-07 12:00 |
06:21:33.47 |
+43:55:33.4 |
HIP 30267 |
9.40 |
| 2026-10-08 00:00 |
06:21:32.94 |
+43:55:45.5 |
HIP 30267 |
9.28 |
| 2026-10-08 12:00 |
06:21:32.38 |
+43:55:57.6 |
HIP 30267 |
9.17 |
| 2026-10-09 00:00 |
06:21:31.79 |
+43:56:09.7 |
HIP 30267 |
9.07 |
| 2026-10-09 12:00 |
06:21:31.17 |
+43:56:21.7 |
HIP 30267 |
8.97 |
| 2026-10-10 00:00 |
06:21:30.52 |
+43:56:33.8 |
HIP 30267 |
8.89 |
| 2026-10-10 12:00 |
06:21:29.84 |
+43:56:45.9 |
HIP 30267 |
8.81 |
| 2026-10-11 00:00 |
06:21:29.13 |
+43:56:57.9 |
HIP 30267 |
8.74 |