메타데이터
| 항목 |
값 |
| Designation |
468P/Siding Spring |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-11-23T01:26:27.240000Z |
| Orbit solution date (soln_date, UTC) |
2024-07-22T18:42:17Z |
| Obs used |
159 |
| NEO |
- |
| M1 |
11.500 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-07-19T08:58:28.416000Z |
| Discovery magnitude (MPC) |
19.60 V |
| Discovery observatory (MPC) |
I47 · Pierre Auger Observatory, Malargüe |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-06-10.0000000 |
| e |
0.44478834 |
| q (au) |
3.967881 |
| a (au) |
7.146610 |
| i (deg) |
50.364692 |
| Ω (om, deg) |
356.098740 |
| ω (w, deg) |
322.249960 |
| M (ma, deg) |
238.402517 |
밝기
산란 + 전체 선형
$$
M_a = (6.096 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.096 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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) |
| 2026-06-01 00:00 |
02:08:59.86 |
+53:16:32.1 |
HIP 10159 |
15.23 |
| 2026-06-01 12:00 |
02:09:28.11 |
+53:20:22.6 |
HIP 10159 |
12.94 |
| 2026-06-02 00:00 |
02:09:56.31 |
+53:24:13.5 |
HIP 10159 |
12.99 |
| 2026-06-02 12:00 |
02:10:24.47 |
+53:28:04.8 |
HIP 10159 |
15.34 |
| 2026-06-03 00:00 |
02:10:52.59 |
+53:31:56.5 |
HIP 10159 |
19.17 |
| 2026-06-03 12:00 |
02:11:20.67 |
+53:35:48.7 |
HIP 10115 |
18.30 |
| 2026-06-04 00:00 |
02:11:48.70 |
+53:39:41.3 |
HIP 10115 |
18.48 |
| 2026-06-04 12:00 |
02:12:16.68 |
+53:43:34.3 |
HIP 10391 |
18.03 |
| 2026-06-05 00:00 |
02:12:44.62 |
+53:47:27.7 |
HIP 10391 |
12.38 |
| 2026-06-05 12:00 |
02:13:12.51 |
+53:51:21.6 |
HIP 10391 |
6.78 |
| 2026-06-06 00:00 |
02:13:40.35 |
+53:55:15.8 |
HIP 10391 |
1.73 |
| 2026-06-06 12:00 |
02:14:08.14 |
+53:59:10.4 |
HIP 10391 |
4.92 |
| 2026-06-07 00:00 |
02:14:35.88 |
+54:03:05.5 |
HIP 10391 |
10.46 |
| 2026-06-07 12:00 |
02:15:03.58 |
+54:07:01.0 |
HIP 10391 |
16.08 |
| 2026-06-08 00:00 |
02:15:31.21 |
+54:10:56.8 |
HIP 10338 |
20.46 |
| 2026-06-08 12:00 |
02:15:58.80 |
+54:14:53.1 |
HIP 10463 |
19.52 |
| 2026-06-09 00:00 |
02:16:26.33 |
+54:18:49.8 |
HIP 10713 |
15.97 |
| 2026-06-09 12:00 |
02:16:53.81 |
+54:22:46.8 |
HIP 10713 |
10.48 |
| 2026-06-10 00:00 |
02:17:21.23 |
+54:26:44.3 |
HIP 10713 |
5.29 |
| 2026-06-10 12:00 |
02:17:48.59 |
+54:30:42.1 |
HIP 10713 |
3.09 |
| 2026-06-11 00:00 |
02:18:15.89 |
+54:34:40.3 |
HIP 10713 |
7.36 |
| 2026-06-11 12:00 |
02:18:43.14 |
+54:38:39.0 |
HIP 10713 |
12.71 |
| 2026-06-12 00:00 |
02:19:10.32 |
+54:42:38.0 |
HIP 10713 |
18.21 |
| 2026-06-12 12:00 |
02:19:37.45 |
+54:46:37.3 |
HIP 10961 |
21.15 |
| 2026-06-13 00:00 |
02:20:04.51 |
+54:50:37.1 |
HIP 10961 |
22.32 |
| 2026-06-13 12:00 |
02:20:31.50 |
+54:54:37.2 |
HIP 10961 |
24.75 |
| 2026-06-14 00:00 |
02:20:58.43 |
+54:58:37.7 |
HIP 10934 |
21.06 |
| 2026-06-14 12:00 |
02:21:25.30 |
+55:02:38.6 |
HIP 10934 |
17.71 |
| 2026-06-15 00:00 |
02:21:52.09 |
+55:06:39.8 |
HIP 10934 |
15.65 |
| 2026-06-15 12:00 |
02:22:18.82 |
+55:10:41.4 |
HIP 10934 |
15.41 |
| 2026-06-16 00:00 |
02:22:45.48 |
+55:14:43.3 |
HIP 11174 |
11.85 |
| 2026-06-16 12:00 |
02:23:12.07 |
+55:18:45.6 |
HIP 11174 |
6.45 |
| 2026-06-17 00:00 |
02:23:38.58 |
+55:22:48.3 |
HIP 11174 |
2.08 |
| 2026-06-17 12:00 |
02:24:05.02 |
+55:26:51.2 |
HIP 11174 |
5.31 |
| 2026-06-18 00:00 |
02:24:31.39 |
+55:30:54.6 |
HIP 11174 |
10.63 |
| 2026-06-18 12:00 |
02:24:57.68 |
+55:34:58.2 |
HIP 11174 |
16.07 |
| 2026-06-19 00:00 |
02:25:23.90 |
+55:39:02.2 |
HIP 11174 |
21.54 |
| 2026-06-19 12:00 |
02:25:50.03 |
+55:43:06.5 |
HIP 11346 |
23.09 |
| 2026-06-20 00:00 |
02:26:16.09 |
+55:47:11.2 |
HIP 11346 |
19.15 |
| 2026-06-20 12:00 |
02:26:42.07 |
+55:51:16.2 |
HIP 11346 |
16.12 |
| 2026-06-21 00:00 |
02:27:07.97 |
+55:55:21.5 |
HIP 11346 |
14.58 |
| 2026-06-21 12:00 |
02:27:33.78 |
+55:59:27.1 |
HIP 11346 |
14.96 |
| 2026-06-22 00:00 |
02:27:59.51 |
+56:03:33.0 |
HIP 11346 |
17.15 |