메타데이터
| 항목 |
값 |
| Designation |
166P/NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2002-05-20T20:10:57.889920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:27:43Z |
| Obs used |
168 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
8.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2003-06-29.0000000 |
| e |
0.38310092 |
| q (au) |
8.564302 |
| a (au) |
13.882826 |
| i (deg) |
15.368401 |
| Ω (om, deg) |
64.488838 |
| ω (w, deg) |
321.878902 |
| M (ma, deg) |
7.700866 |
밝기
산란 + 전체 선형
$$
M_a = (6.233 + 3.388\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.233 |
| n |
3.388 |
| gf |
0.990 |
| gb |
-1.000 |
| 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) |
| 2026-07-29 00:00 |
13:25:33.95 |
+02:11:34.8 |
HIP 65564 |
31.37 |
| 2026-07-29 12:00 |
13:25:36.14 |
+02:11:01.4 |
HIP 65564 |
30.62 |
| 2026-07-30 00:00 |
13:25:38.37 |
+02:10:27.7 |
HIP 65564 |
29.87 |
| 2026-07-30 12:00 |
13:25:40.65 |
+02:09:53.9 |
HIP 65564 |
29.10 |
| 2026-07-31 00:00 |
13:25:42.97 |
+02:09:19.9 |
HIP 65564 |
28.34 |
| 2026-07-31 12:00 |
13:25:45.34 |
+02:08:45.6 |
HIP 65564 |
27.56 |
| 2026-08-01 00:00 |
13:25:47.75 |
+02:08:11.2 |
HIP 65564 |
26.78 |
| 2026-08-01 12:00 |
13:25:50.20 |
+02:07:36.6 |
HIP 65564 |
26.00 |
| 2026-08-02 00:00 |
13:25:52.70 |
+02:07:01.7 |
HIP 65564 |
25.21 |
| 2026-08-02 12:00 |
13:25:55.24 |
+02:06:26.7 |
HIP 65564 |
24.42 |
| 2026-08-03 00:00 |
13:25:57.82 |
+02:05:51.5 |
HIP 65564 |
23.63 |
| 2026-08-03 12:00 |
13:26:00.44 |
+02:05:16.0 |
HIP 65564 |
22.84 |
| 2026-08-04 00:00 |
13:26:03.11 |
+02:04:40.4 |
HIP 65564 |
22.05 |
| 2026-08-04 12:00 |
13:26:05.82 |
+02:04:04.6 |
HIP 65564 |
21.26 |
| 2026-08-05 00:00 |
13:26:08.58 |
+02:03:28.6 |
HIP 65564 |
20.47 |
| 2026-08-05 12:00 |
13:26:11.37 |
+02:02:52.4 |
HIP 65564 |
19.69 |
| 2026-08-06 00:00 |
13:26:14.21 |
+02:02:16.1 |
HIP 65564 |
18.91 |
| 2026-08-06 12:00 |
13:26:17.09 |
+02:01:39.5 |
HIP 65564 |
18.14 |
| 2026-08-07 00:00 |
13:26:20.01 |
+02:01:02.8 |
HIP 65564 |
17.39 |
| 2026-08-07 12:00 |
13:26:22.98 |
+02:00:25.9 |
HIP 65564 |
16.65 |
| 2026-08-08 00:00 |
13:26:25.99 |
+01:59:48.8 |
HIP 65564 |
15.93 |
| 2026-08-08 12:00 |
13:26:29.03 |
+01:59:11.5 |
HIP 65564 |
15.23 |
| 2026-08-09 00:00 |
13:26:32.12 |
+01:58:34.1 |
HIP 65564 |
14.57 |
| 2026-08-09 12:00 |
13:26:35.25 |
+01:57:56.4 |
HIP 65564 |
13.94 |
| 2026-08-10 00:00 |
13:26:38.42 |
+01:57:18.7 |
HIP 65564 |
13.36 |
| 2026-08-10 12:00 |
13:26:41.64 |
+01:56:40.7 |
HIP 65564 |
12.82 |
| 2026-08-11 00:00 |
13:26:44.89 |
+01:56:02.6 |
HIP 65564 |
12.35 |
| 2026-08-11 12:00 |
13:26:48.19 |
+01:55:24.3 |
HIP 65564 |
11.95 |
| 2026-08-12 00:00 |
13:26:51.52 |
+01:54:45.9 |
HIP 65564 |
11.63 |
| 2026-08-12 12:00 |
13:26:54.90 |
+01:54:07.2 |
HIP 65564 |
11.40 |
| 2026-08-13 00:00 |
13:26:58.31 |
+01:53:28.5 |
HIP 65564 |
11.28 |
| 2026-08-13 12:00 |
13:27:01.77 |
+01:52:49.6 |
HIP 65564 |
11.25 |
| 2026-08-14 00:00 |
13:27:05.26 |
+01:52:10.5 |
HIP 65564 |
11.33 |
| 2026-08-14 12:00 |
13:27:08.79 |
+01:51:31.3 |
HIP 65564 |
11.53 |
| 2026-08-15 00:00 |
13:27:12.37 |
+01:50:51.9 |
HIP 65564 |
11.83 |
| 2026-08-15 12:00 |
13:27:15.98 |
+01:50:12.4 |
HIP 65564 |
12.22 |
| 2026-08-16 00:00 |
13:27:19.63 |
+01:49:32.7 |
HIP 65564 |
12.72 |
| 2026-08-16 12:00 |
13:27:23.32 |
+01:48:52.9 |
HIP 65564 |
13.30 |
| 2026-08-17 00:00 |
13:27:27.05 |
+01:48:13.0 |
HIP 65564 |
13.95 |
| 2026-08-17 12:00 |
13:27:30.81 |
+01:47:32.9 |
HIP 65564 |
14.67 |
| 2026-08-18 00:00 |
13:27:34.61 |
+01:46:52.7 |
HIP 65564 |
15.46 |
| 2026-08-18 12:00 |
13:27:38.45 |
+01:46:12.4 |
HIP 65564 |
16.30 |
| 2026-08-19 00:00 |
13:27:42.33 |
+01:45:31.9 |
HIP 65564 |
17.19 |