메타데이터
| 항목 |
값 |
| Designation |
488P/NEAT-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-02-25T20:27:35.637120Z |
| Orbit solution date (soln_date, UTC) |
2024-10-26T00:12:33Z |
| Obs used |
92 |
| NEO |
- |
| M1 |
15.700 |
| K1 |
16.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2002-08-29T05:09:46.368000Z |
| Discovery magnitude (MPC) |
19.00 R |
| Discovery observatory (MPC) |
644 · Palomar Mountain/NEAT |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-04-27.0000000 |
| e |
0.55045765 |
| q (au) |
1.679899 |
| a (au) |
3.736909 |
| i (deg) |
11.366619 |
| Ω (om, deg) |
324.110333 |
| ω (w, deg) |
1.302662 |
| M (ma, deg) |
157.742457 |
밝기
산란 + 전체 선형
$$
M_a = (15.185 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.185 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-03-26 00:00 |
06:42:10.16 |
+29:29:17.7 |
HIP 32120 |
8.39 |
| 2026-03-26 12:00 |
06:42:18.20 |
+29:28:07.3 |
HIP 32120 |
6.45 |
| 2026-03-27 00:00 |
06:42:26.47 |
+29:26:56.8 |
HIP 32120 |
4.64 |
| 2026-03-27 12:00 |
06:42:34.94 |
+29:25:46.3 |
HIP 32120 |
3.29 |
| 2026-03-28 00:00 |
06:42:43.63 |
+29:24:35.8 |
HIP 32120 |
3.14 |
| 2026-03-28 12:00 |
06:42:52.53 |
+29:23:25.4 |
HIP 32120 |
4.39 |
| 2026-03-29 00:00 |
06:43:01.63 |
+29:22:14.9 |
HIP 32120 |
6.28 |
| 2026-03-29 12:00 |
06:43:10.95 |
+29:21:04.4 |
HIP 32120 |
8.43 |
| 2026-03-30 00:00 |
06:43:20.46 |
+29:19:53.9 |
HIP 32120 |
10.70 |
| 2026-03-30 12:00 |
06:43:30.19 |
+29:18:43.4 |
HIP 32120 |
13.06 |
| 2026-03-31 00:00 |
06:43:40.11 |
+29:17:32.9 |
HIP 32120 |
15.48 |
| 2026-03-31 12:00 |
06:43:50.24 |
+29:16:22.4 |
HIP 32120 |
17.95 |
| 2026-04-01 00:00 |
06:44:00.56 |
+29:15:11.9 |
HIP 32311 |
19.57 |
| 2026-04-01 12:00 |
06:44:11.08 |
+29:14:01.4 |
HIP 32311 |
17.46 |
| 2026-04-02 00:00 |
06:44:21.80 |
+29:12:50.9 |
HIP 32311 |
15.48 |
| 2026-04-02 12:00 |
06:44:32.72 |
+29:11:40.4 |
HIP 32311 |
13.70 |
| 2026-04-03 00:00 |
06:44:43.83 |
+29:10:29.9 |
HIP 32311 |
12.24 |
| 2026-04-03 12:00 |
06:44:55.13 |
+29:09:19.4 |
HIP 32311 |
11.26 |
| 2026-04-04 00:00 |
06:45:06.62 |
+29:08:08.9 |
HIP 32311 |
10.92 |
| 2026-04-04 12:00 |
06:45:18.30 |
+29:06:58.3 |
HIP 32311 |
11.29 |
| 2026-04-05 00:00 |
06:45:30.17 |
+29:05:47.8 |
HIP 32311 |
12.34 |
| 2026-04-05 12:00 |
06:45:42.23 |
+29:04:37.3 |
HIP 32311 |
13.94 |
| 2026-04-06 00:00 |
06:45:54.47 |
+29:03:26.7 |
HIP 32311 |
15.95 |
| 2026-04-06 12:00 |
06:46:06.89 |
+29:02:16.2 |
HIP 32311 |
18.25 |
| 2026-04-07 00:00 |
06:46:19.50 |
+29:01:05.6 |
HIP 32311 |
20.76 |
| 2026-04-07 12:00 |
06:46:32.29 |
+28:59:55.0 |
HIP 32311 |
23.42 |
| 2026-04-08 00:00 |
06:46:45.26 |
+28:58:44.5 |
HIP 32311 |
26.20 |
| 2026-04-08 12:00 |
06:46:58.41 |
+28:57:33.9 |
HIP 32311 |
29.09 |
| 2026-04-09 00:00 |
06:47:11.74 |
+28:56:23.3 |
HIP 32311 |
32.05 |
| 2026-04-09 12:00 |
06:47:25.24 |
+28:55:12.7 |
HIP 32700 |
33.78 |
| 2026-04-10 00:00 |
06:47:38.92 |
+28:54:02.0 |
HIP 32700 |
30.79 |
| 2026-04-10 12:00 |
06:47:52.77 |
+28:52:51.4 |
HIP 32700 |
27.82 |
| 2026-04-11 00:00 |
06:48:06.79 |
+28:51:40.7 |
HIP 32700 |
24.91 |
| 2026-04-11 12:00 |
06:48:20.99 |
+28:50:30.0 |
HIP 32700 |
22.08 |
| 2026-04-12 00:00 |
06:48:35.35 |
+28:49:19.3 |
HIP 32700 |
19.38 |
| 2026-04-12 12:00 |
06:48:49.88 |
+28:48:08.6 |
HIP 32700 |
16.92 |
| 2026-04-13 00:00 |
06:49:04.59 |
+28:46:57.8 |
HIP 32700 |
14.81 |
| 2026-04-13 12:00 |
06:49:19.45 |
+28:45:47.0 |
HIP 32700 |
13.28 |
| 2026-04-14 00:00 |
06:49:34.48 |
+28:44:36.2 |
HIP 32700 |
12.54 |
| 2026-04-14 12:00 |
06:49:49.68 |
+28:43:25.4 |
HIP 32700 |
12.79 |
| 2026-04-15 00:00 |
06:50:05.03 |
+28:42:14.5 |
HIP 32700 |
13.98 |
| 2026-04-15 12:00 |
06:50:20.55 |
+28:41:03.6 |
HIP 32700 |
15.93 |
| 2026-04-16 00:00 |
06:50:36.23 |
+28:39:52.7 |
HIP 32700 |
18.42 |