메타데이터
| 항목 |
값 |
| Designation |
C/1996 E1 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1996-07-27T08:19:31.935360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:49Z |
| Obs used |
237 |
| NEO |
- |
| M1 |
12.500 |
| K1 |
8.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1996-05-17.0000000 |
| e |
1.00090859 |
| q (au) |
1.358954 |
| a (au) |
-1495.676752 |
| i (deg) |
114.475378 |
| Ω (om, deg) |
149.841392 |
| ω (w, deg) |
81.108042 |
| M (ma, deg) |
-0.001216 |
밝기
산란 + 전체 선형
$$
M_a = (8.349 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.349 |
| 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) |
| 2026-07-29 00:00 |
21:18:35.87 |
-74:27:42.9 |
HIP 104945 |
12.81 |
| 2026-07-29 12:00 |
21:18:28.02 |
-74:27:54.4 |
HIP 104945 |
12.35 |
| 2026-07-30 00:00 |
21:18:20.16 |
-74:28:05.7 |
HIP 104945 |
11.89 |
| 2026-07-30 12:00 |
21:18:12.29 |
-74:28:16.7 |
HIP 104945 |
11.44 |
| 2026-07-31 00:00 |
21:18:04.40 |
-74:28:27.5 |
HIP 104945 |
10.99 |
| 2026-07-31 12:00 |
21:17:56.50 |
-74:28:38.1 |
HIP 104945 |
10.56 |
| 2026-08-01 00:00 |
21:17:48.58 |
-74:28:48.4 |
HIP 104945 |
10.13 |
| 2026-08-01 12:00 |
21:17:40.66 |
-74:28:58.4 |
HIP 104945 |
9.72 |
| 2026-08-02 00:00 |
21:17:32.72 |
-74:29:08.2 |
HIP 104945 |
9.31 |
| 2026-08-02 12:00 |
21:17:24.77 |
-74:29:17.7 |
HIP 104945 |
8.93 |
| 2026-08-03 00:00 |
21:17:16.81 |
-74:29:27.0 |
HIP 104945 |
8.55 |
| 2026-08-03 12:00 |
21:17:08.84 |
-74:29:36.1 |
HIP 104945 |
8.20 |
| 2026-08-04 00:00 |
21:17:00.86 |
-74:29:44.8 |
HIP 104945 |
7.87 |
| 2026-08-04 12:00 |
21:16:52.88 |
-74:29:53.4 |
HIP 104945 |
7.55 |
| 2026-08-05 00:00 |
21:16:44.89 |
-74:30:01.6 |
HIP 104945 |
7.27 |
| 2026-08-05 12:00 |
21:16:36.89 |
-74:30:09.7 |
HIP 104945 |
7.01 |
| 2026-08-06 00:00 |
21:16:28.88 |
-74:30:17.4 |
HIP 104945 |
6.78 |
| 2026-08-06 12:00 |
21:16:20.87 |
-74:30:24.9 |
HIP 104945 |
6.59 |
| 2026-08-07 00:00 |
21:16:12.85 |
-74:30:32.2 |
HIP 104945 |
6.44 |
| 2026-08-07 12:00 |
21:16:04.83 |
-74:30:39.1 |
HIP 104945 |
6.33 |
| 2026-08-08 00:00 |
21:15:56.81 |
-74:30:45.9 |
HIP 104945 |
6.26 |
| 2026-08-08 12:00 |
21:15:48.78 |
-74:30:52.3 |
HIP 104945 |
6.23 |
| 2026-08-09 00:00 |
21:15:40.75 |
-74:30:58.5 |
HIP 104945 |
6.24 |
| 2026-08-09 12:00 |
21:15:32.72 |
-74:31:04.5 |
HIP 104945 |
6.30 |
| 2026-08-10 00:00 |
21:15:24.69 |
-74:31:10.1 |
HIP 104945 |
6.41 |
| 2026-08-10 12:00 |
21:15:16.66 |
-74:31:15.6 |
HIP 104945 |
6.55 |
| 2026-08-11 00:00 |
21:15:08.63 |
-74:31:20.7 |
HIP 104945 |
6.72 |
| 2026-08-11 12:00 |
21:15:00.61 |
-74:31:25.6 |
HIP 104945 |
6.94 |
| 2026-08-12 00:00 |
21:14:52.58 |
-74:31:30.2 |
HIP 104945 |
7.18 |
| 2026-08-12 12:00 |
21:14:44.56 |
-74:31:34.6 |
HIP 104945 |
7.45 |
| 2026-08-13 00:00 |
21:14:36.54 |
-74:31:38.7 |
HIP 104945 |
7.75 |
| 2026-08-13 12:00 |
21:14:28.53 |
-74:31:42.5 |
HIP 104945 |
8.06 |
| 2026-08-14 00:00 |
21:14:20.52 |
-74:31:46.1 |
HIP 104945 |
8.40 |
| 2026-08-14 12:00 |
21:14:12.52 |
-74:31:49.4 |
HIP 104945 |
8.75 |
| 2026-08-15 00:00 |
21:14:04.52 |
-74:31:52.5 |
HIP 104945 |
9.12 |
| 2026-08-15 12:00 |
21:13:56.53 |
-74:31:55.2 |
HIP 104945 |
9.49 |
| 2026-08-16 00:00 |
21:13:48.55 |
-74:31:57.7 |
HIP 104945 |
9.89 |
| 2026-08-16 12:00 |
21:13:40.58 |
-74:32:00.0 |
HIP 104945 |
10.28 |
| 2026-08-17 00:00 |
21:13:32.62 |
-74:32:02.0 |
HIP 104945 |
10.69 |
| 2026-08-17 12:00 |
21:13:24.67 |
-74:32:03.7 |
HIP 104945 |
11.11 |
| 2026-08-18 00:00 |
21:13:16.73 |
-74:32:05.1 |
HIP 104945 |
11.53 |
| 2026-08-18 12:00 |
21:13:08.80 |
-74:32:06.3 |
HIP 104945 |
11.96 |
| 2026-08-19 00:00 |
21:13:00.89 |
-74:32:07.2 |
HIP 104945 |
12.39 |