메타데이터
| 항목 |
값 |
| Designation |
162P/Siding Spring |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-03-08T10:33:48.648960Z |
| Orbit solution date (soln_date, UTC) |
2025-07-31T12:12:41Z |
| Obs used |
3224 |
| NEO |
Yes |
| M1 |
15.200 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-12-01.0000000 |
| e |
0.59607784 |
| q (au) |
1.233274 |
| a (au) |
3.053246 |
| i (deg) |
27.817056 |
| Ω (om, deg) |
31.236338 |
| ω (w, deg) |
356.327515 |
| M (ma, deg) |
49.429050 |
밝기
산란 + 전체 선형
$$
M_a = (13.651 + 2.493\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.651 |
| n |
2.493 |
| gf |
0.924 |
| gb |
-0.877 |
| k |
0.998 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
03:18:15.13 |
+20:48:33.6 |
HIP 15198 |
33.77 |
| 2026-06-01 12:00 |
03:19:50.95 |
+21:01:29.4 |
HIP 15627 |
20.63 |
| 2026-06-02 00:00 |
03:21:26.98 |
+21:14:21.6 |
HIP 15627 |
6.35 |
| 2026-06-02 12:00 |
03:23:03.19 |
+21:27:10.3 |
HIP 15766 |
7.16 |
| 2026-06-03 00:00 |
03:24:39.60 |
+21:39:55.3 |
HIP 15766 |
21.34 |
| 2026-06-03 12:00 |
03:26:16.21 |
+21:52:36.6 |
HIP 15882 |
25.55 |
| 2026-06-04 00:00 |
03:27:53.01 |
+22:05:14.3 |
HIP 16144 |
4.35 |
| 2026-06-04 12:00 |
03:29:30.01 |
+22:17:48.1 |
HIP 16174 |
21.15 |
| 2026-06-05 00:00 |
03:31:07.20 |
+22:30:18.2 |
HIP 16428 |
5.53 |
| 2026-06-05 12:00 |
03:32:44.60 |
+22:42:44.4 |
HIP 16428 |
20.99 |
| 2026-06-06 00:00 |
03:34:22.19 |
+22:55:06.7 |
HIP 16668 |
9.72 |
| 2026-06-06 12:00 |
03:35:59.97 |
+23:07:25.0 |
HIP 16859 |
14.34 |
| 2026-06-07 00:00 |
03:37:37.96 |
+23:19:39.4 |
HIP 16859 |
11.53 |
| 2026-06-07 12:00 |
03:39:16.14 |
+23:31:49.8 |
HIP 17091 |
15.47 |
| 2026-06-08 00:00 |
03:40:54.52 |
+23:43:56.1 |
HIP 17225 |
16.09 |
| 2026-06-08 12:00 |
03:42:33.10 |
+23:55:58.4 |
HIP 17401 |
23.12 |
| 2026-06-09 00:00 |
03:44:11.88 |
+24:07:56.4 |
HIP 17499 |
9.34 |
| 2026-06-09 12:00 |
03:45:50.85 |
+24:19:50.3 |
HIP 17573 |
2.25 |
| 2026-06-10 00:00 |
03:47:30.02 |
+24:31:40.0 |
HIP 17664 |
6.98 |
| 2026-06-10 12:00 |
03:49:09.39 |
+24:43:25.5 |
HIP 17862 |
20.75 |
| 2026-06-11 00:00 |
03:50:48.95 |
+24:55:06.6 |
HIP 18046 |
16.82 |
| 2026-06-11 12:00 |
03:52:28.71 |
+25:06:43.4 |
HIP 18106 |
4.97 |
| 2026-06-12 00:00 |
03:54:08.66 |
+25:18:15.8 |
HIP 18273 |
14.78 |
| 2026-06-12 12:00 |
03:55:48.80 |
+25:29:43.8 |
HIP 18273 |
17.17 |
| 2026-06-13 00:00 |
03:57:29.14 |
+25:41:07.3 |
HIP 18491 |
24.47 |
| 2026-06-13 12:00 |
03:59:09.67 |
+25:52:26.4 |
HIP 18630 |
21.93 |
| 2026-06-14 00:00 |
04:00:50.39 |
+26:03:40.9 |
HIP 18815 |
16.78 |
| 2026-06-14 12:00 |
04:02:31.30 |
+26:14:50.8 |
HIP 18868 |
19.70 |
| 2026-06-15 00:00 |
04:04:12.39 |
+26:25:56.2 |
HIP 19136 |
28.40 |
| 2026-06-15 12:00 |
04:05:53.68 |
+26:36:56.9 |
HIP 19136 |
24.36 |
| 2026-06-16 00:00 |
04:07:35.15 |
+26:47:53.0 |
HIP 19332 |
13.38 |
| 2026-06-16 12:00 |
04:09:16.80 |
+26:58:44.3 |
HIP 19382 |
8.46 |
| 2026-06-17 00:00 |
04:10:58.63 |
+27:09:30.9 |
HIP 19592 |
12.83 |
| 2026-06-17 12:00 |
04:12:40.65 |
+27:20:12.7 |
HIP 19592 |
15.13 |
| 2026-06-18 00:00 |
04:14:22.85 |
+27:30:49.8 |
HIP 19792 |
26.83 |
| 2026-06-18 12:00 |
04:16:05.22 |
+27:41:21.9 |
HIP 19792 |
26.29 |
| 2026-06-19 00:00 |
04:17:47.77 |
+27:51:49.3 |
HIP 20090 |
16.81 |
| 2026-06-19 12:00 |
04:19:30.50 |
+28:02:11.7 |
HIP 20090 |
14.51 |
| 2026-06-20 00:00 |
04:21:13.40 |
+28:12:29.2 |
HIP 20388 |
11.48 |
| 2026-06-20 12:00 |
04:22:56.47 |
+28:22:41.7 |
HIP 20388 |
13.48 |
| 2026-06-21 00:00 |
04:24:39.71 |
+28:32:49.2 |
HIP 20512 |
24.87 |
| 2026-06-21 12:00 |
04:26:23.12 |
+28:42:51.7 |
HIP 20728 |
32.95 |
| 2026-06-22 00:00 |
04:28:06.70 |
+28:52:49.2 |
HIP 20989 |
27.36 |