메타데이터
| 항목 |
값 |
| Designation |
C/2000 S5 |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-10-26T15:21:36Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:06Z |
| Obs used |
11 |
| NEO |
- |
| M1 |
9.900 |
| K1 |
15.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2000-10-10.0000000 |
| e |
1.00000000 |
| q (au) |
0.601800 |
| a (au) |
- |
| i (deg) |
53.820000 |
| Ω (om, deg) |
341.630000 |
| ω (w, deg) |
291.480000 |
| M (ma, deg) |
- |
밝기
산란 + 전체 선형
$$
M_a = (10.131 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.131 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
05:00:20.60 |
+75:52:18.9 |
HIP 23114 |
17.99 |
| 2026-03-26 12:00 |
05:00:23.99 |
+75:51:51.4 |
HIP 23114 |
18.49 |
| 2026-03-27 00:00 |
05:00:27.45 |
+75:51:24.1 |
HIP 23114 |
18.99 |
| 2026-03-27 12:00 |
05:00:31.00 |
+75:50:56.9 |
HIP 23114 |
19.49 |
| 2026-03-28 00:00 |
05:00:34.62 |
+75:50:29.8 |
HIP 23114 |
20.00 |
| 2026-03-28 12:00 |
05:00:38.31 |
+75:50:02.8 |
HIP 23114 |
20.50 |
| 2026-03-29 00:00 |
05:00:42.08 |
+75:49:35.9 |
HIP 23114 |
21.00 |
| 2026-03-29 12:00 |
05:00:45.93 |
+75:49:09.2 |
HIP 23114 |
21.50 |
| 2026-03-30 00:00 |
05:00:49.85 |
+75:48:42.5 |
HIP 23114 |
22.01 |
| 2026-03-30 12:00 |
05:00:53.84 |
+75:48:16.0 |
HIP 23114 |
22.51 |
| 2026-03-31 00:00 |
05:00:57.91 |
+75:47:49.6 |
HIP 23114 |
23.01 |
| 2026-03-31 12:00 |
05:01:02.05 |
+75:47:23.3 |
HIP 23114 |
23.52 |
| 2026-04-01 00:00 |
05:01:06.26 |
+75:46:57.2 |
HIP 23114 |
24.02 |
| 2026-04-01 12:00 |
05:01:10.55 |
+75:46:31.1 |
HIP 23114 |
24.52 |
| 2026-04-02 00:00 |
05:01:14.91 |
+75:46:05.2 |
HIP 23114 |
25.03 |
| 2026-04-02 12:00 |
05:01:19.34 |
+75:45:39.4 |
HIP 23114 |
25.53 |
| 2026-04-03 00:00 |
05:01:23.84 |
+75:45:13.8 |
HIP 23114 |
26.03 |
| 2026-04-03 12:00 |
05:01:28.41 |
+75:44:48.3 |
HIP 23114 |
26.54 |
| 2026-04-04 00:00 |
05:01:33.05 |
+75:44:22.9 |
HIP 23114 |
27.04 |
| 2026-04-04 12:00 |
05:01:37.76 |
+75:43:57.6 |
HIP 23114 |
27.54 |
| 2026-04-05 00:00 |
05:01:42.54 |
+75:43:32.5 |
HIP 23943 |
27.77 |
| 2026-04-05 12:00 |
05:01:47.39 |
+75:43:07.5 |
HIP 23943 |
27.65 |
| 2026-04-06 00:00 |
05:01:52.30 |
+75:42:42.7 |
HIP 23943 |
27.54 |
| 2026-04-06 12:00 |
05:01:57.29 |
+75:42:18.0 |
HIP 23943 |
27.43 |
| 2026-04-07 00:00 |
05:02:02.34 |
+75:41:53.4 |
HIP 23943 |
27.33 |
| 2026-04-07 12:00 |
05:02:07.46 |
+75:41:29.0 |
HIP 23943 |
27.23 |
| 2026-04-08 00:00 |
05:02:12.65 |
+75:41:04.7 |
HIP 23943 |
27.13 |
| 2026-04-08 12:00 |
05:02:17.90 |
+75:40:40.6 |
HIP 23943 |
27.04 |
| 2026-04-09 00:00 |
05:02:23.22 |
+75:40:16.6 |
HIP 23943 |
26.95 |
| 2026-04-09 12:00 |
05:02:28.61 |
+75:39:52.8 |
HIP 23943 |
26.87 |
| 2026-04-10 00:00 |
05:02:34.06 |
+75:39:29.1 |
HIP 23943 |
26.79 |
| 2026-04-10 12:00 |
05:02:39.57 |
+75:39:05.5 |
HIP 23943 |
26.72 |
| 2026-04-11 00:00 |
05:02:45.15 |
+75:38:42.2 |
HIP 23943 |
26.65 |
| 2026-04-11 12:00 |
05:02:50.80 |
+75:38:18.9 |
HIP 23943 |
26.59 |
| 2026-04-12 00:00 |
05:02:56.50 |
+75:37:55.8 |
HIP 24036 |
26.48 |
| 2026-04-12 12:00 |
05:03:02.27 |
+75:37:32.9 |
HIP 24036 |
26.17 |
| 2026-04-13 00:00 |
05:03:08.10 |
+75:37:10.1 |
HIP 24036 |
25.87 |
| 2026-04-13 12:00 |
05:03:14.00 |
+75:36:47.5 |
HIP 24036 |
25.58 |
| 2026-04-14 00:00 |
05:03:19.95 |
+75:36:25.1 |
HIP 24036 |
25.28 |
| 2026-04-14 12:00 |
05:03:25.97 |
+75:36:02.8 |
HIP 24036 |
24.99 |
| 2026-04-15 00:00 |
05:03:32.05 |
+75:35:40.7 |
HIP 24027 |
24.53 |
| 2026-04-15 12:00 |
05:03:38.18 |
+75:35:18.7 |
HIP 24027 |
24.07 |
| 2026-04-16 00:00 |
05:03:44.38 |
+75:34:56.9 |
HIP 24027 |
23.61 |