메타데이터
| 항목 |
값 |
| Designation |
243P/NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-03-02T16:36:03.709440Z |
| Orbit solution date (soln_date, UTC) |
2026-05-05T09:12:21Z |
| Obs used |
825 |
| NEO |
- |
| M1 |
9.300 |
| K1 |
18.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-03-16.0000000 |
| e |
0.35912835 |
| q (au) |
2.455172 |
| a (au) |
3.830988 |
| i (deg) |
7.639598 |
| Ω (om, deg) |
87.672761 |
| ω (w, deg) |
283.771605 |
| M (ma, deg) |
49.857461 |
밝기
산란 + 전체 선형
$$
M_a = (10.910 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.910 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.855 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
04:48:28.52 |
+18:56:18.3 |
HIP 22349 |
14.05 |
| 2026-07-29 12:00 |
04:49:15.99 |
+18:58:04.3 |
HIP 22349 |
17.42 |
| 2026-07-30 00:00 |
04:50:03.34 |
+18:59:49.3 |
HIP 22565 |
20.94 |
| 2026-07-30 12:00 |
04:50:50.58 |
+19:01:33.2 |
HIP 22565 |
13.46 |
| 2026-07-31 00:00 |
04:51:37.71 |
+19:03:16.1 |
HIP 22654 |
11.35 |
| 2026-07-31 12:00 |
04:52:24.72 |
+19:04:57.8 |
HIP 22654 |
5.15 |
| 2026-08-01 00:00 |
04:53:11.61 |
+19:06:38.5 |
HIP 22745 |
6.09 |
| 2026-08-01 12:00 |
04:53:58.39 |
+19:08:18.2 |
HIP 22745 |
6.68 |
| 2026-08-02 00:00 |
04:54:45.04 |
+19:09:56.8 |
HIP 22745 |
17.34 |
| 2026-08-02 12:00 |
04:55:31.58 |
+19:11:34.3 |
HIP 22850 |
19.23 |
| 2026-08-03 00:00 |
04:56:17.99 |
+19:13:10.8 |
HIP 22850 |
24.65 |
| 2026-08-03 12:00 |
04:57:04.28 |
+19:14:46.3 |
HIP 23109 |
23.72 |
| 2026-08-04 00:00 |
04:57:50.44 |
+19:16:20.7 |
HIP 23109 |
18.28 |
| 2026-08-04 12:00 |
04:58:36.48 |
+19:17:54.2 |
HIP 23109 |
18.64 |
| 2026-08-05 00:00 |
04:59:22.39 |
+19:19:26.5 |
HIP 23109 |
24.51 |
| 2026-08-05 12:00 |
05:00:08.18 |
+19:20:57.9 |
HIP 23178 |
27.54 |
| 2026-08-06 00:00 |
05:00:53.83 |
+19:22:28.3 |
HIP 23178 |
33.20 |
| 2026-08-06 12:00 |
05:01:39.36 |
+19:23:57.6 |
HIP 23356 |
32.14 |
| 2026-08-07 00:00 |
05:02:24.75 |
+19:25:26.0 |
HIP 23579 |
31.66 |
| 2026-08-07 12:00 |
05:03:10.00 |
+19:26:53.4 |
HIP 23579 |
25.45 |
| 2026-08-08 00:00 |
05:03:55.12 |
+19:28:19.8 |
HIP 23579 |
22.91 |
| 2026-08-08 12:00 |
05:04:40.11 |
+19:29:45.2 |
HIP 23695 |
22.31 |
| 2026-08-09 00:00 |
05:05:24.95 |
+19:31:09.6 |
HIP 23695 |
17.33 |
| 2026-08-09 12:00 |
05:06:09.66 |
+19:32:33.0 |
HIP 23695 |
18.15 |
| 2026-08-10 00:00 |
05:06:54.22 |
+19:33:55.5 |
HIP 23695 |
24.15 |
| 2026-08-10 12:00 |
05:07:38.64 |
+19:35:17.1 |
HIP 23949 |
23.48 |
| 2026-08-11 00:00 |
05:08:22.92 |
+19:36:37.7 |
HIP 23949 |
16.31 |
| 2026-08-11 12:00 |
05:09:07.05 |
+19:37:57.3 |
HIP 23949 |
14.19 |
| 2026-08-12 00:00 |
05:09:51.03 |
+19:39:16.1 |
HIP 23949 |
18.85 |
| 2026-08-12 12:00 |
05:10:34.86 |
+19:40:33.9 |
HIP 23949 |
26.93 |
| 2026-08-13 00:00 |
05:11:18.54 |
+19:41:50.7 |
HIP 24284 |
19.75 |
| 2026-08-13 12:00 |
05:12:02.07 |
+19:43:06.7 |
HIP 24284 |
9.94 |
| 2026-08-14 00:00 |
05:12:45.45 |
+19:44:21.8 |
HIP 24301 |
2.05 |
| 2026-08-14 12:00 |
05:13:28.67 |
+19:45:35.9 |
HIP 24301 |
8.62 |
| 2026-08-15 00:00 |
05:14:11.73 |
+19:46:49.2 |
HIP 24301 |
18.78 |
| 2026-08-15 12:00 |
05:14:54.63 |
+19:48:01.6 |
HIP 24480 |
15.85 |
| 2026-08-16 00:00 |
05:15:37.38 |
+19:49:13.1 |
HIP 24535 |
8.57 |
| 2026-08-16 12:00 |
05:16:19.96 |
+19:50:23.8 |
HIP 24535 |
9.79 |
| 2026-08-17 00:00 |
05:17:02.39 |
+19:51:33.6 |
HIP 24619 |
15.84 |
| 2026-08-17 12:00 |
05:17:44.65 |
+19:52:42.6 |
HIP 24663 |
15.54 |
| 2026-08-18 00:00 |
05:18:26.74 |
+19:53:50.7 |
HIP 24820 |
18.15 |
| 2026-08-18 12:00 |
05:19:08.67 |
+19:54:58.0 |
HIP 24820 |
13.19 |
| 2026-08-19 00:00 |
05:19:50.43 |
+19:56:04.5 |
HIP 24820 |
14.65 |