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) |
| 2026-07-29 00:00 |
06:40:12.56 |
+36:59:21.6 |
HIP 31943 |
16.71 |
| 2026-07-29 12:00 |
06:41:59.50 |
+37:02:33.0 |
HIP 32100 |
5.70 |
| 2026-07-30 00:00 |
06:43:46.31 |
+37:05:39.4 |
HIP 32190 |
7.24 |
| 2026-07-30 12:00 |
06:45:33.01 |
+37:08:40.7 |
HIP 32258 |
16.87 |
| 2026-07-31 00:00 |
06:47:19.59 |
+37:11:37.1 |
HIP 32556 |
10.25 |
| 2026-07-31 12:00 |
06:49:06.04 |
+37:14:28.4 |
HIP 32673 |
16.03 |
| 2026-08-01 00:00 |
06:50:52.36 |
+37:17:14.9 |
HIP 32746 |
19.12 |
| 2026-08-01 12:00 |
06:52:38.54 |
+37:19:56.4 |
HIP 33209 |
33.99 |
| 2026-08-02 00:00 |
06:54:24.59 |
+37:22:33.1 |
HIP 33209 |
26.40 |
| 2026-08-02 12:00 |
06:56:10.49 |
+37:25:04.9 |
HIP 33453 |
13.58 |
| 2026-08-03 00:00 |
06:57:56.24 |
+37:27:32.0 |
HIP 33528 |
4.12 |
| 2026-08-03 12:00 |
06:59:41.85 |
+37:29:54.2 |
HIP 33528 |
19.01 |
| 2026-08-04 00:00 |
07:01:27.29 |
+37:32:11.7 |
HIP 33903 |
14.34 |
| 2026-08-04 12:00 |
07:03:12.58 |
+37:34:24.5 |
HIP 34103 |
12.80 |
| 2026-08-05 00:00 |
07:04:57.71 |
+37:36:32.7 |
HIP 34103 |
8.49 |
| 2026-08-05 12:00 |
07:06:42.66 |
+37:38:36.2 |
HIP 34265 |
19.52 |
| 2026-08-06 00:00 |
07:08:27.45 |
+37:40:35.0 |
HIP 34462 |
13.99 |
| 2026-08-06 12:00 |
07:10:12.06 |
+37:42:29.4 |
HIP 34741 |
16.36 |
| 2026-08-07 00:00 |
07:11:56.49 |
+37:44:19.2 |
HIP 34741 |
6.38 |
| 2026-08-07 12:00 |
07:13:40.73 |
+37:46:04.5 |
HIP 34891 |
10.94 |
| 2026-08-08 00:00 |
07:15:24.79 |
+37:47:45.4 |
HIP 35276 |
22.65 |
| 2026-08-08 12:00 |
07:17:08.65 |
+37:49:21.8 |
HIP 35276 |
6.09 |
| 2026-08-09 00:00 |
07:18:52.32 |
+37:50:53.9 |
HIP 35276 |
20.16 |
| 2026-08-09 12:00 |
07:20:35.79 |
+37:52:21.6 |
HIP 35662 |
16.64 |
| 2026-08-10 00:00 |
07:22:19.06 |
+37:53:45.1 |
HIP 35662 |
16.90 |
| 2026-08-10 12:00 |
07:24:02.12 |
+37:55:04.3 |
HIP 35878 |
7.23 |
| 2026-08-11 00:00 |
07:25:44.96 |
+37:56:19.3 |
HIP 36091 |
8.41 |
| 2026-08-11 12:00 |
07:27:27.59 |
+37:57:30.1 |
HIP 36091 |
17.49 |
| 2026-08-12 00:00 |
07:29:10.00 |
+37:58:36.8 |
HIP 36463 |
16.57 |
| 2026-08-12 12:00 |
07:30:52.19 |
+37:59:39.4 |
HIP 36463 |
13.36 |
| 2026-08-13 00:00 |
07:32:34.15 |
+38:00:37.9 |
HIP 36714 |
11.42 |
| 2026-08-13 12:00 |
07:34:15.89 |
+38:01:32.5 |
HIP 36714 |
16.44 |
| 2026-08-14 00:00 |
07:35:57.38 |
+38:02:23.1 |
HIP 36953 |
3.86 |
| 2026-08-14 12:00 |
07:37:38.65 |
+38:03:09.8 |
HIP 37153 |
13.60 |
| 2026-08-15 00:00 |
07:39:19.67 |
+38:03:52.5 |
HIP 37153 |
18.38 |
| 2026-08-15 12:00 |
07:41:00.44 |
+38:04:31.5 |
HIP 37485 |
9.16 |
| 2026-08-16 00:00 |
07:42:40.97 |
+38:05:06.7 |
HIP 37485 |
11.99 |
| 2026-08-16 12:00 |
07:44:21.26 |
+38:05:38.1 |
HIP 37945 |
28.91 |
| 2026-08-17 00:00 |
07:46:01.28 |
+38:06:05.8 |
HIP 37945 |
12.52 |
| 2026-08-17 12:00 |
07:47:41.06 |
+38:06:29.8 |
HIP 37945 |
15.82 |
| 2026-08-18 00:00 |
07:49:20.57 |
+38:06:50.2 |
HIP 38215 |
7.21 |
| 2026-08-18 12:00 |
07:50:59.83 |
+38:07:07.1 |
HIP 38215 |
15.97 |
| 2026-08-19 00:00 |
07:52:38.82 |
+38:07:20.4 |
HIP 38636 |
23.95 |