메타데이터
| 항목 |
값 |
| Designation |
312P/NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-09-24T19:35:29.054400Z |
| Orbit solution date (soln_date, UTC) |
2025-04-09T13:44:31Z |
| Obs used |
161 |
| NEO |
- |
| M1 |
16.900 |
| K1 |
7.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-08-05.0000000 |
| e |
0.43012991 |
| q (au) |
1.971316 |
| a (au) |
3.459237 |
| i (deg) |
19.791956 |
| Ω (om, deg) |
144.887861 |
| ω (w, deg) |
207.686469 |
| M (ma, deg) |
184.317953 |
밝기
산란 + 전체 선형
$$
M_a = (14.152 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.152 |
| n |
6.000 |
| gf |
0.997 |
| gb |
-0.890 |
| 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) |
| 2026-06-01 00:00 |
17:56:41.73 |
+02:54:30.9 |
HIP 87811 |
7.78 |
| 2026-06-01 12:00 |
17:56:21.80 |
+02:55:27.1 |
HIP 87811 |
3.91 |
| 2026-06-02 00:00 |
17:56:01.63 |
+02:56:20.4 |
HIP 87811 |
4.70 |
| 2026-06-02 12:00 |
17:55:41.22 |
+02:57:10.9 |
HIP 87811 |
9.07 |
| 2026-06-03 00:00 |
17:55:20.59 |
+02:57:58.6 |
HIP 87811 |
14.06 |
| 2026-06-03 12:00 |
17:54:59.72 |
+02:58:43.3 |
HIP 87811 |
19.22 |
| 2026-06-04 00:00 |
17:54:38.63 |
+02:59:25.2 |
HIP 87811 |
24.48 |
| 2026-06-04 12:00 |
17:54:17.33 |
+03:00:04.0 |
HIP 87566 |
24.70 |
| 2026-06-05 00:00 |
17:53:55.80 |
+03:00:39.9 |
HIP 87480 |
22.27 |
| 2026-06-05 12:00 |
17:53:34.07 |
+03:01:12.8 |
HIP 87480 |
16.89 |
| 2026-06-06 00:00 |
17:53:12.13 |
+03:01:42.6 |
HIP 87480 |
11.53 |
| 2026-06-06 12:00 |
17:52:49.99 |
+03:02:09.3 |
HIP 87480 |
6.33 |
| 2026-06-07 00:00 |
17:52:27.66 |
+03:02:33.0 |
HIP 87480 |
2.91 |
| 2026-06-07 12:00 |
17:52:05.13 |
+03:02:53.5 |
HIP 87480 |
6.28 |
| 2026-06-08 00:00 |
17:51:42.41 |
+03:03:10.8 |
HIP 87417 |
9.53 |
| 2026-06-08 12:00 |
17:51:19.52 |
+03:03:24.9 |
HIP 87417 |
12.52 |
| 2026-06-09 00:00 |
17:50:56.45 |
+03:03:35.9 |
HIP 87417 |
16.99 |
| 2026-06-09 12:00 |
17:50:33.20 |
+03:03:43.6 |
HIP 87262 |
11.98 |
| 2026-06-10 00:00 |
17:50:09.80 |
+03:03:48.0 |
HIP 87262 |
7.54 |
| 2026-06-10 12:00 |
17:49:46.23 |
+03:03:49.2 |
HIP 87262 |
6.16 |
| 2026-06-11 00:00 |
17:49:22.50 |
+03:03:47.0 |
HIP 87262 |
9.39 |
| 2026-06-11 12:00 |
17:48:58.63 |
+03:03:41.5 |
HIP 87262 |
14.45 |
| 2026-06-12 00:00 |
17:48:34.62 |
+03:03:32.6 |
HIP 87262 |
20.03 |
| 2026-06-12 12:00 |
17:48:10.47 |
+03:03:20.3 |
HIP 87108 |
21.31 |
| 2026-06-13 00:00 |
17:47:46.19 |
+03:03:04.7 |
HIP 87108 |
20.71 |
| 2026-06-13 12:00 |
17:47:21.79 |
+03:02:45.6 |
HIP 87108 |
21.81 |
| 2026-06-14 00:00 |
17:46:57.27 |
+03:02:23.0 |
HIP 87108 |
24.39 |
| 2026-06-14 12:00 |
17:46:32.64 |
+03:01:57.0 |
HIP 87108 |
28.09 |
| 2026-06-15 00:00 |
17:46:07.90 |
+03:01:27.5 |
HIP 86820 |
26.14 |
| 2026-06-15 12:00 |
17:45:43.07 |
+03:00:54.6 |
HIP 86820 |
19.92 |
| 2026-06-16 00:00 |
17:45:18.14 |
+03:00:18.1 |
HIP 86820 |
13.68 |
| 2026-06-16 12:00 |
17:44:53.14 |
+02:59:38.1 |
HIP 86820 |
7.42 |
| 2026-06-17 00:00 |
17:44:28.05 |
+02:58:54.6 |
HIP 86820 |
1.32 |
| 2026-06-17 12:00 |
17:44:02.90 |
+02:58:07.5 |
HIP 86820 |
5.29 |
| 2026-06-18 00:00 |
17:43:37.68 |
+02:57:16.9 |
HIP 86820 |
11.61 |
| 2026-06-18 12:00 |
17:43:12.41 |
+02:56:22.7 |
HIP 86820 |
17.97 |
| 2026-06-19 00:00 |
17:42:47.09 |
+02:55:25.0 |
HIP 86820 |
24.36 |
| 2026-06-19 12:00 |
17:42:21.72 |
+02:54:23.7 |
HIP 86820 |
30.77 |
| 2026-06-20 00:00 |
17:41:56.32 |
+02:53:18.8 |
HIP 86478 |
32.73 |
| 2026-06-20 12:00 |
17:41:30.89 |
+02:52:10.4 |
HIP 86478 |
28.81 |
| 2026-06-21 00:00 |
17:41:05.44 |
+02:50:58.4 |
HIP 86478 |
25.98 |
| 2026-06-21 12:00 |
17:40:39.98 |
+02:49:42.9 |
HIP 86478 |
24.63 |
| 2026-06-22 00:00 |
17:40:14.50 |
+02:48:23.8 |
HIP 86374 |
21.10 |