344P/Read
메타데이터
| 항목 |
값 |
| Designation |
344P/Read |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-01-10T17:39:03.035520Z |
| Orbit solution date (soln_date, UTC) |
2023-05-03T22:44:48Z |
| Obs used |
535 |
| NEO |
- |
| M1 |
5.300 |
| K1 |
25.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-12-08.0000000 |
| e |
0.42197889 |
| q (au) |
2.824924 |
| a (au) |
4.887234 |
| i (deg) |
3.483249 |
| Ω (om, deg) |
273.290163 |
| ω (w, deg) |
140.373304 |
| M (ma, deg) |
163.497658 |
밝기
산란 + 전체 선형
$$
M_a = (15.246 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.246 |
| n |
2.000 |
| gf |
0.984 |
| gb |
-0.500 |
| k |
0.800 |
| δ90 |
1.997 |
| 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) |
| 2026-02-03 00:00 |
21:07:59.91 |
-14:28:18.1 |
HIP 104340 |
9.44 |
| 2026-02-03 12:00 |
21:08:32.94 |
-14:25:45.4 |
HIP 104340 |
8.20 |
| 2026-02-04 00:00 |
21:09:05.98 |
-14:23:12.1 |
HIP 104340 |
13.65 |
| 2026-02-04 12:00 |
21:09:39.03 |
-14:20:38.3 |
HIP 104494 |
7.50 |
| 2026-02-05 00:00 |
21:10:12.08 |
-14:18:04.1 |
HIP 104494 |
2.79 |
| 2026-02-05 12:00 |
21:10:45.15 |
-14:15:29.4 |
HIP 104494 |
10.04 |
| 2026-02-06 00:00 |
21:11:18.22 |
-14:12:54.2 |
HIP 104634 |
16.42 |
| 2026-02-06 12:00 |
21:11:51.30 |
-14:10:18.5 |
HIP 104634 |
18.20 |
| 2026-02-07 00:00 |
21:12:24.38 |
-14:07:42.4 |
HIP 104634 |
23.12 |
| 2026-02-07 12:00 |
21:12:57.47 |
-14:05:05.7 |
HIP 104859 |
22.74 |
| 2026-02-08 00:00 |
21:13:30.57 |
-14:02:28.6 |
HIP 104859 |
15.74 |
| 2026-02-08 12:00 |
21:14:03.67 |
-13:59:51.1 |
HIP 104859 |
11.00 |
| 2026-02-09 00:00 |
21:14:36.77 |
-13:57:13.0 |
HIP 104859 |
11.69 |
| 2026-02-09 12:00 |
21:15:09.88 |
-13:54:34.5 |
HIP 104859 |
17.19 |
| 2026-02-10 00:00 |
21:15:42.98 |
-13:51:55.6 |
HIP 104859 |
24.45 |
| 2026-02-10 12:00 |
21:16:16.09 |
-13:49:16.1 |
HIP 104859 |
32.30 |
| 2026-02-11 00:00 |
21:16:49.21 |
-13:46:36.3 |
HIP 105079 |
30.45 |
| 2026-02-11 12:00 |
21:17:22.32 |
-13:43:55.9 |
HIP 105079 |
27.28 |
| 2026-02-12 00:00 |
21:17:55.43 |
-13:41:15.2 |
HIP 105079 |
26.54 |
| 2026-02-12 12:00 |
21:18:28.54 |
-13:38:33.9 |
HIP 105333 |
25.86 |
| 2026-02-13 00:00 |
21:19:01.65 |
-13:35:52.3 |
HIP 105333 |
17.38 |
| 2026-02-13 12:00 |
21:19:34.76 |
-13:33:10.2 |
HIP 105333 |
8.90 |
| 2026-02-14 00:00 |
21:20:07.86 |
-13:30:27.7 |
HIP 105333 |
0.45 |
| 2026-02-14 12:00 |
21:20:40.96 |
-13:27:44.7 |
HIP 105333 |
8.09 |
| 2026-02-15 00:00 |
21:21:14.06 |
-13:25:01.3 |
HIP 105333 |
16.59 |
| 2026-02-15 12:00 |
21:21:47.15 |
-13:22:17.5 |
HIP 105603 |
24.33 |
| 2026-02-16 00:00 |
21:22:20.24 |
-13:19:33.3 |
HIP 105603 |
18.55 |
| 2026-02-16 12:00 |
21:22:53.32 |
-13:16:48.6 |
HIP 105603 |
15.52 |
| 2026-02-17 00:00 |
21:23:26.39 |
-13:14:03.6 |
HIP 105603 |
16.80 |
| 2026-02-17 12:00 |
21:23:59.46 |
-13:11:18.1 |
HIP 105668 |
18.84 |
| 2026-02-18 00:00 |
21:24:32.52 |
-13:08:32.3 |
HIP 105668 |
16.66 |
| 2026-02-18 12:00 |
21:25:05.57 |
-13:05:46.0 |
HIP 105668 |
18.57 |
| 2026-02-19 00:00 |
21:25:38.61 |
-13:02:59.3 |
HIP 105668 |
23.60 |
| 2026-02-19 12:00 |
21:26:11.64 |
-13:00:12.3 |
HIP 105668 |
30.24 |
| 2026-02-20 00:00 |
21:26:44.65 |
-12:57:24.9 |
HIP 105668 |
37.63 |
| 2026-02-20 12:00 |
21:27:17.66 |
-12:54:37.0 |
HIP 106089 |
31.70 |
| 2026-02-21 00:00 |
21:27:50.66 |
-12:51:48.9 |
HIP 106089 |
23.21 |
| 2026-02-21 12:00 |
21:28:23.64 |
-12:49:00.3 |
HIP 106089 |
14.76 |
| 2026-02-22 00:00 |
21:28:56.61 |
-12:46:11.4 |
HIP 106089 |
6.47 |
| 2026-02-22 12:00 |
21:29:29.56 |
-12:43:22.1 |
HIP 106089 |
3.32 |
| 2026-02-23 00:00 |
21:30:02.50 |
-12:40:32.4 |
HIP 106147 |
9.97 |
| 2026-02-23 12:00 |
21:30:35.42 |
-12:37:42.4 |
HIP 106147 |
10.81 |
| 2026-02-24 00:00 |
21:31:08.33 |
-12:34:52.1 |
HIP 106147 |
16.71 |