메타데이터
| 항목 |
값 |
| Designation |
368P/NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-09-09T00:50:13.459200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:37Z |
| Obs used |
784 |
| NEO |
- |
| M1 |
14.600 |
| K1 |
8.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2018-06-13T04:32:59.712000Z |
| Discovery magnitude (MPC) |
19.40 N |
| Discovery observatory (MPC) |
J04 · ESA Optical Ground Station, Tenerife |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-06-05.0000000 |
| e |
0.62854670 |
| q (au) |
2.044313 |
| a (au) |
5.503554 |
| i (deg) |
15.447948 |
| Ω (om, deg) |
258.165998 |
| ω (w, deg) |
118.808346 |
| M (ma, deg) |
185.412933 |
밝기
산란 + 전체 선형
$$
M_a = (16.295 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.295 |
| n |
2.000 |
| gf |
0.871 |
| gb |
-0.721 |
| k |
0.940 |
| δ90 |
1.000 |
| 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) |
| 2026-05-12 00:00 |
13:09:01.73 |
-21:53:02.1 |
HIP 64219 |
20.74 |
| 2026-05-12 12:00 |
13:08:52.38 |
-21:51:34.5 |
HIP 64219 |
23.06 |
| 2026-05-13 00:00 |
13:08:43.11 |
-21:50:06.9 |
HIP 64219 |
25.43 |
| 2026-05-13 12:00 |
13:08:33.92 |
-21:48:39.4 |
HIP 64219 |
27.83 |
| 2026-05-14 00:00 |
13:08:24.81 |
-21:47:11.8 |
HIP 64219 |
30.25 |
| 2026-05-14 12:00 |
13:08:15.78 |
-21:45:44.4 |
HIP 64219 |
32.68 |
| 2026-05-15 00:00 |
13:08:06.83 |
-21:44:16.9 |
HIP 64219 |
35.11 |
| 2026-05-15 12:00 |
13:07:57.96 |
-21:42:49.5 |
HIP 63985 |
36.42 |
| 2026-05-16 00:00 |
13:07:49.18 |
-21:41:22.2 |
HIP 63985 |
34.17 |
| 2026-05-16 12:00 |
13:07:40.49 |
-21:39:55.0 |
HIP 63985 |
31.97 |
| 2026-05-17 00:00 |
13:07:31.88 |
-21:38:27.9 |
HIP 63985 |
29.82 |
| 2026-05-17 12:00 |
13:07:23.35 |
-21:37:00.9 |
HIP 63985 |
27.74 |
| 2026-05-18 00:00 |
13:07:14.92 |
-21:35:34.0 |
HIP 63985 |
25.74 |
| 2026-05-18 12:00 |
13:07:06.57 |
-21:34:07.2 |
HIP 63985 |
23.82 |
| 2026-05-19 00:00 |
13:06:58.32 |
-21:32:40.5 |
HIP 63985 |
22.00 |
| 2026-05-19 12:00 |
13:06:50.15 |
-21:31:14.0 |
HIP 63985 |
20.32 |
| 2026-05-20 00:00 |
13:06:42.08 |
-21:29:47.7 |
HIP 63985 |
18.79 |
| 2026-05-20 12:00 |
13:06:34.09 |
-21:28:21.5 |
HIP 63985 |
17.44 |
| 2026-05-21 00:00 |
13:06:26.20 |
-21:26:55.4 |
HIP 63985 |
16.33 |
| 2026-05-21 12:00 |
13:06:18.41 |
-21:25:29.6 |
HIP 63985 |
15.48 |
| 2026-05-22 00:00 |
13:06:10.71 |
-21:24:04.0 |
HIP 63985 |
14.94 |
| 2026-05-22 12:00 |
13:06:03.10 |
-21:22:38.5 |
HIP 63985 |
14.73 |
| 2026-05-23 00:00 |
13:05:55.59 |
-21:21:13.3 |
HIP 63985 |
14.85 |
| 2026-05-23 12:00 |
13:05:48.17 |
-21:19:48.3 |
HIP 63985 |
15.29 |
| 2026-05-24 00:00 |
13:05:40.85 |
-21:18:23.5 |
HIP 63985 |
16.02 |
| 2026-05-24 12:00 |
13:05:33.63 |
-21:16:59.0 |
HIP 63869 |
14.51 |
| 2026-05-25 00:00 |
13:05:26.51 |
-21:15:34.7 |
HIP 63869 |
12.98 |
| 2026-05-25 12:00 |
13:05:19.49 |
-21:14:10.6 |
HIP 63869 |
11.65 |
| 2026-05-26 00:00 |
13:05:12.56 |
-21:12:46.8 |
HIP 63869 |
10.59 |
| 2026-05-26 12:00 |
13:05:05.74 |
-21:11:23.3 |
HIP 63869 |
9.89 |
| 2026-05-27 00:00 |
13:04:59.01 |
-21:10:00.1 |
HIP 63869 |
9.59 |
| 2026-05-27 12:00 |
13:04:52.39 |
-21:08:37.1 |
HIP 63869 |
9.74 |
| 2026-05-28 00:00 |
13:04:45.86 |
-21:07:14.5 |
HIP 63869 |
10.28 |
| 2026-05-28 12:00 |
13:04:39.44 |
-21:05:52.1 |
HIP 63869 |
11.17 |
| 2026-05-29 00:00 |
13:04:33.12 |
-21:04:30.1 |
HIP 63869 |
12.30 |
| 2026-05-29 12:00 |
13:04:26.91 |
-21:03:08.4 |
HIP 63869 |
13.62 |
| 2026-05-30 00:00 |
13:04:20.79 |
-21:01:47.0 |
HIP 63869 |
15.06 |
| 2026-05-30 12:00 |
13:04:14.78 |
-21:00:25.9 |
HIP 63869 |
16.58 |
| 2026-05-31 00:00 |
13:04:08.87 |
-20:59:05.2 |
HIP 63869 |
18.16 |
| 2026-05-31 12:00 |
13:04:03.07 |
-20:57:44.8 |
HIP 63869 |
19.78 |
| 2026-06-01 00:00 |
13:03:57.37 |
-20:56:24.8 |
HIP 63869 |
21.42 |
| 2026-06-01 12:00 |
13:03:51.78 |
-20:55:05.2 |
HIP 63738 |
20.12 |
| 2026-06-02 00:00 |
13:03:46.29 |
-20:53:45.9 |
HIP 63738 |
18.75 |