메타데이터
| 항목 |
값 |
| Designation |
C/2002 P1 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-11-23T04:02:07.762560Z |
| Orbit solution date (soln_date, UTC) |
2026-07-06T12:12:23Z |
| Obs used |
102 |
| NEO |
- |
| M1 |
10.800 |
| K1 |
5.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-10-22.0000000 |
| e |
0.98422527 |
| q (au) |
6.530250 |
| a (au) |
413.968977 |
| i (deg) |
34.606091 |
| Ω (om, deg) |
310.672593 |
| ω (w, deg) |
347.764969 |
| M (ma, deg) |
0.038947 |
밝기
산란 + 전체 선형
$$
M_a = (14.523 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.523 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.776 |
| k |
0.800 |
| δ90 |
9.999 |
| 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) |
| 2026-09-20 00:00 |
05:00:51.37 |
+51:41:36.1 |
HIP 23168 |
22.35 |
| 2026-09-20 12:00 |
05:00:50.83 |
+51:41:54.5 |
HIP 23168 |
22.09 |
| 2026-09-21 00:00 |
05:00:50.25 |
+51:42:12.9 |
HIP 23168 |
21.82 |
| 2026-09-21 12:00 |
05:00:49.63 |
+51:42:31.2 |
HIP 23168 |
21.54 |
| 2026-09-22 00:00 |
05:00:48.98 |
+51:42:49.5 |
HIP 23168 |
21.27 |
| 2026-09-22 12:00 |
05:00:48.28 |
+51:43:07.7 |
HIP 23168 |
20.99 |
| 2026-09-23 00:00 |
05:00:47.55 |
+51:43:25.8 |
HIP 23168 |
20.71 |
| 2026-09-23 12:00 |
05:00:46.78 |
+51:43:43.9 |
HIP 23168 |
20.43 |
| 2026-09-24 00:00 |
05:00:45.97 |
+51:44:01.9 |
HIP 23168 |
20.14 |
| 2026-09-24 12:00 |
05:00:45.12 |
+51:44:19.8 |
HIP 23168 |
19.86 |
| 2026-09-25 00:00 |
05:00:44.24 |
+51:44:37.6 |
HIP 23168 |
19.56 |
| 2026-09-25 12:00 |
05:00:43.32 |
+51:44:55.4 |
HIP 23168 |
19.27 |
| 2026-09-26 00:00 |
05:00:42.35 |
+51:45:13.1 |
HIP 23168 |
18.97 |
| 2026-09-26 12:00 |
05:00:41.36 |
+51:45:30.8 |
HIP 23168 |
18.68 |
| 2026-09-27 00:00 |
05:00:40.32 |
+51:45:48.3 |
HIP 23168 |
18.37 |
| 2026-09-27 12:00 |
05:00:39.25 |
+51:46:05.8 |
HIP 23168 |
18.07 |
| 2026-09-28 00:00 |
05:00:38.13 |
+51:46:23.2 |
HIP 23168 |
17.76 |
| 2026-09-28 12:00 |
05:00:36.99 |
+51:46:40.5 |
HIP 23168 |
17.45 |
| 2026-09-29 00:00 |
05:00:35.80 |
+51:46:57.7 |
HIP 23168 |
17.14 |
| 2026-09-29 12:00 |
05:00:34.57 |
+51:47:14.8 |
HIP 23168 |
16.82 |
| 2026-09-30 00:00 |
05:00:33.31 |
+51:47:31.9 |
HIP 23168 |
16.50 |
| 2026-09-30 12:00 |
05:00:32.01 |
+51:47:48.9 |
HIP 23168 |
16.18 |
| 2026-10-01 00:00 |
05:00:30.68 |
+51:48:05.7 |
HIP 23168 |
15.85 |
| 2026-10-01 12:00 |
05:00:29.30 |
+51:48:22.5 |
HIP 23168 |
15.52 |
| 2026-10-02 00:00 |
05:00:27.89 |
+51:48:39.2 |
HIP 23168 |
15.19 |
| 2026-10-02 12:00 |
05:00:26.45 |
+51:48:55.8 |
HIP 23168 |
14.86 |
| 2026-10-03 00:00 |
05:00:24.96 |
+51:49:12.3 |
HIP 23168 |
14.52 |
| 2026-10-03 12:00 |
05:00:23.44 |
+51:49:28.8 |
HIP 23168 |
14.18 |
| 2026-10-04 00:00 |
05:00:21.88 |
+51:49:45.1 |
HIP 23168 |
13.84 |
| 2026-10-04 12:00 |
05:00:20.28 |
+51:50:01.3 |
HIP 23168 |
13.49 |
| 2026-10-05 00:00 |
05:00:18.65 |
+51:50:17.4 |
HIP 23168 |
13.14 |
| 2026-10-05 12:00 |
05:00:16.98 |
+51:50:33.4 |
HIP 23168 |
12.78 |
| 2026-10-06 00:00 |
05:00:15.28 |
+51:50:49.3 |
HIP 23168 |
12.43 |
| 2026-10-06 12:00 |
05:00:13.53 |
+51:51:05.1 |
HIP 23168 |
12.07 |
| 2026-10-07 00:00 |
05:00:11.76 |
+51:51:20.8 |
HIP 23168 |
11.71 |
| 2026-10-07 12:00 |
05:00:09.94 |
+51:51:36.4 |
HIP 23168 |
11.34 |
| 2026-10-08 00:00 |
05:00:08.09 |
+51:51:51.9 |
HIP 23168 |
10.97 |
| 2026-10-08 12:00 |
05:00:06.20 |
+51:52:07.2 |
HIP 23168 |
10.60 |
| 2026-10-09 00:00 |
05:00:04.28 |
+51:52:22.5 |
HIP 23168 |
10.22 |
| 2026-10-09 12:00 |
05:00:02.32 |
+51:52:37.6 |
HIP 23168 |
9.84 |
| 2026-10-10 00:00 |
05:00:00.33 |
+51:52:52.6 |
HIP 23168 |
9.46 |
| 2026-10-10 12:00 |
04:59:58.30 |
+51:53:07.5 |
HIP 23168 |
9.08 |
| 2026-10-11 00:00 |
04:59:56.24 |
+51:53:22.3 |
HIP 23168 |
8.69 |