메타데이터
| 항목 |
값 |
| Designation |
451P/Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-01-17T03:54:57.801600Z |
| Orbit solution date (soln_date, UTC) |
2023-04-21T18:44:16Z |
| Obs used |
157 |
| NEO |
- |
| M1 |
11.600 |
| K1 |
15.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2006-11-24T10:39:07.776000Z |
| Discovery magnitude (MPC) |
20.10 N |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-01-11.0000000 |
| e |
0.55743773 |
| q (au) |
2.795689 |
| a (au) |
6.317053 |
| i (deg) |
26.493684 |
| Ω (om, deg) |
301.041988 |
| ω (w, deg) |
186.900815 |
| M (ma, deg) |
67.654045 |
밝기
산란 + 전체 선형
$$
M_a = (14.305 + 3.229\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.305 |
| n |
3.229 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.999 |
| 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 |
18:10:43.38 |
-40:11:18.6 |
HIP 89121 |
10.04 |
| 2026-06-01 12:00 |
18:10:27.76 |
-40:11:19.9 |
HIP 89121 |
12.31 |
| 2026-06-02 00:00 |
18:10:12.06 |
-40:11:20.4 |
HIP 88933 |
11.43 |
| 2026-06-02 12:00 |
18:09:56.29 |
-40:11:20.2 |
HIP 88933 |
8.43 |
| 2026-06-03 00:00 |
18:09:40.44 |
-40:11:19.4 |
HIP 88933 |
5.43 |
| 2026-06-03 12:00 |
18:09:24.51 |
-40:11:17.7 |
HIP 88933 |
2.49 |
| 2026-06-04 00:00 |
18:09:08.52 |
-40:11:15.4 |
HIP 88933 |
1.21 |
| 2026-06-04 12:00 |
18:08:52.45 |
-40:11:12.3 |
HIP 88933 |
3.94 |
| 2026-06-05 00:00 |
18:08:36.32 |
-40:11:08.5 |
HIP 88933 |
6.97 |
| 2026-06-05 12:00 |
18:08:20.12 |
-40:11:03.9 |
HIP 88845 |
7.66 |
| 2026-06-06 00:00 |
18:08:03.86 |
-40:10:58.5 |
HIP 88845 |
7.40 |
| 2026-06-06 12:00 |
18:07:47.54 |
-40:10:52.5 |
HIP 88845 |
8.37 |
| 2026-06-07 00:00 |
18:07:31.16 |
-40:10:45.6 |
HIP 88735 |
9.32 |
| 2026-06-07 12:00 |
18:07:14.73 |
-40:10:38.0 |
HIP 88735 |
7.19 |
| 2026-06-08 00:00 |
18:06:58.23 |
-40:10:29.7 |
HIP 88735 |
6.01 |
| 2026-06-08 12:00 |
18:06:41.69 |
-40:10:20.6 |
HIP 88735 |
6.35 |
| 2026-06-09 00:00 |
18:06:25.10 |
-40:10:10.7 |
HIP 88735 |
8.04 |
| 2026-06-09 12:00 |
18:06:08.46 |
-40:10:00.0 |
HIP 88735 |
10.44 |
| 2026-06-10 00:00 |
18:05:51.77 |
-40:09:48.6 |
HIP 88735 |
13.19 |
| 2026-06-10 12:00 |
18:05:35.04 |
-40:09:36.4 |
HIP 88735 |
16.10 |
| 2026-06-11 00:00 |
18:05:18.27 |
-40:09:23.4 |
HIP 88577 |
17.56 |
| 2026-06-11 12:00 |
18:05:01.46 |
-40:09:09.6 |
HIP 88577 |
17.78 |
| 2026-06-12 00:00 |
18:04:44.61 |
-40:08:55.1 |
HIP 88577 |
18.57 |
| 2026-06-12 12:00 |
18:04:27.73 |
-40:08:39.7 |
HIP 88577 |
19.87 |
| 2026-06-13 00:00 |
18:04:10.82 |
-40:08:23.6 |
HIP 88352 |
18.97 |
| 2026-06-13 12:00 |
18:03:53.88 |
-40:08:06.7 |
HIP 88352 |
15.73 |
| 2026-06-14 00:00 |
18:03:36.91 |
-40:07:49.0 |
HIP 88352 |
12.49 |
| 2026-06-14 12:00 |
18:03:19.92 |
-40:07:30.5 |
HIP 88352 |
9.26 |
| 2026-06-15 00:00 |
18:03:02.90 |
-40:07:11.2 |
HIP 88352 |
6.04 |
| 2026-06-15 12:00 |
18:02:45.87 |
-40:06:51.1 |
HIP 88352 |
2.93 |
| 2026-06-16 00:00 |
18:02:28.82 |
-40:06:30.2 |
HIP 88352 |
1.46 |
| 2026-06-16 12:00 |
18:02:11.75 |
-40:06:08.6 |
HIP 88352 |
4.14 |
| 2026-06-17 00:00 |
18:01:54.68 |
-40:05:46.1 |
HIP 88352 |
7.34 |
| 2026-06-17 12:00 |
18:01:37.59 |
-40:05:22.9 |
HIP 88266 |
7.67 |
| 2026-06-18 00:00 |
18:01:20.50 |
-40:04:58.8 |
HIP 88266 |
8.09 |
| 2026-06-18 12:00 |
18:01:03.40 |
-40:04:34.0 |
HIP 88266 |
9.70 |
| 2026-06-19 00:00 |
18:00:46.30 |
-40:04:08.3 |
HIP 88266 |
12.03 |
| 2026-06-19 12:00 |
18:00:29.20 |
-40:03:41.9 |
HIP 88266 |
14.74 |
| 2026-06-20 00:00 |
18:00:12.11 |
-40:03:14.7 |
HIP 88266 |
17.66 |
| 2026-06-20 12:00 |
17:59:55.02 |
-40:02:46.7 |
HIP 88266 |
20.70 |
| 2026-06-21 00:00 |
17:59:37.94 |
-40:02:17.9 |
HIP 88266 |
23.81 |
| 2026-06-21 12:00 |
17:59:20.87 |
-40:01:48.4 |
HIP 88266 |
26.97 |
| 2026-06-22 00:00 |
17:59:03.81 |
-40:01:18.0 |
HIP 87854 |
26.03 |