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) |
| 2026-05-12 00:00 |
02:16:49.23 |
+11:31:29.5 |
HIP 10549 |
17.02 |
| 2026-05-12 12:00 |
02:18:18.19 |
+11:46:09.9 |
HIP 10825 |
19.63 |
| 2026-05-13 00:00 |
02:19:47.29 |
+12:00:48.6 |
HIP 10825 |
6.92 |
| 2026-05-13 12:00 |
02:21:16.54 |
+12:15:25.6 |
HIP 11019 |
8.79 |
| 2026-05-14 00:00 |
02:22:45.94 |
+12:30:00.8 |
HIP 11082 |
3.74 |
| 2026-05-14 12:00 |
02:24:15.49 |
+12:44:34.2 |
HIP 11280 |
16.17 |
| 2026-05-15 00:00 |
02:25:45.20 |
+12:59:05.6 |
HIP 11280 |
10.80 |
| 2026-05-15 12:00 |
02:27:15.06 |
+13:13:35.2 |
HIP 11461 |
18.29 |
| 2026-05-16 00:00 |
02:28:45.08 |
+13:28:02.7 |
HIP 11522 |
24.69 |
| 2026-05-16 12:00 |
02:30:15.25 |
+13:42:28.2 |
HIP 11700 |
18.01 |
| 2026-05-17 00:00 |
02:31:45.59 |
+13:56:51.7 |
HIP 11700 |
12.15 |
| 2026-05-17 12:00 |
02:33:16.08 |
+14:11:13.0 |
HIP 12025 |
34.21 |
| 2026-05-18 00:00 |
02:34:46.73 |
+14:25:32.1 |
HIP 12025 |
8.70 |
| 2026-05-18 12:00 |
02:36:17.55 |
+14:39:49.0 |
HIP 12025 |
18.85 |
| 2026-05-19 00:00 |
02:37:48.52 |
+14:54:03.6 |
HIP 12349 |
17.39 |
| 2026-05-19 12:00 |
02:39:19.67 |
+15:08:16.0 |
HIP 12349 |
17.32 |
| 2026-05-20 00:00 |
02:40:50.97 |
+15:22:25.9 |
HIP 12553 |
18.48 |
| 2026-05-20 12:00 |
02:42:22.45 |
+15:36:33.4 |
HIP 12553 |
13.04 |
| 2026-05-21 00:00 |
02:43:54.09 |
+15:50:38.5 |
HIP 12742 |
15.65 |
| 2026-05-21 12:00 |
02:45:25.90 |
+16:04:41.0 |
HIP 12742 |
23.30 |
| 2026-05-22 00:00 |
02:46:57.88 |
+16:18:41.0 |
HIP 13145 |
32.36 |
| 2026-05-22 12:00 |
02:48:30.04 |
+16:32:38.4 |
HIP 13145 |
26.57 |
| 2026-05-23 00:00 |
02:50:02.36 |
+16:46:33.2 |
HIP 13297 |
18.20 |
| 2026-05-23 12:00 |
02:51:34.86 |
+17:00:25.2 |
HIP 13297 |
7.99 |
| 2026-05-24 00:00 |
02:53:07.54 |
+17:14:14.5 |
HIP 13297 |
34.05 |
| 2026-05-24 12:00 |
02:54:40.39 |
+17:28:01.0 |
HIP 13579 |
16.45 |
| 2026-05-25 00:00 |
02:56:13.42 |
+17:41:44.7 |
HIP 13600 |
17.99 |
| 2026-05-25 12:00 |
02:57:46.62 |
+17:55:25.5 |
HIP 13824 |
6.90 |
| 2026-05-26 00:00 |
02:59:20.01 |
+18:09:03.4 |
HIP 14021 |
19.11 |
| 2026-05-26 12:00 |
03:00:53.58 |
+18:22:38.3 |
HIP 14132 |
19.65 |
| 2026-05-27 00:00 |
03:02:27.33 |
+18:36:10.2 |
HIP 14141 |
9.70 |
| 2026-05-27 12:00 |
03:04:01.27 |
+18:49:39.1 |
HIP 14391 |
24.66 |
| 2026-05-28 00:00 |
03:05:35.39 |
+19:03:04.8 |
HIP 14391 |
21.58 |
| 2026-05-28 12:00 |
03:07:09.70 |
+19:16:27.4 |
HIP 14493 |
5.39 |
| 2026-05-29 00:00 |
03:08:44.19 |
+19:29:46.8 |
HIP 14672 |
13.76 |
| 2026-05-29 12:00 |
03:10:18.87 |
+19:43:02.9 |
HIP 14838 |
18.55 |
| 2026-05-30 00:00 |
03:11:53.74 |
+19:56:15.8 |
HIP 14838 |
13.21 |
| 2026-05-30 12:00 |
03:13:28.80 |
+20:09:25.4 |
HIP 15100 |
21.46 |
| 2026-05-31 00:00 |
03:15:04.05 |
+20:22:31.5 |
HIP 15100 |
4.44 |
| 2026-05-31 12:00 |
03:16:39.49 |
+20:35:34.3 |
HIP 15198 |
12.64 |
| 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 |