メタデータ
| 項目 |
値 |
| 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 |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| 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 |
等級
散乱 + 全体線形
$$
M_a = (8.349 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.349 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
10.000 |
| パラメータ |
記号 |
範囲 |
説明 |
| 太陽・地球距離が1 AUのときの絶対等級 |
H0 |
-5 to 20 |
彗星の固有の明るさ |
| 測光スロープパラメータ |
n |
2 to 6 |
太陽距離に対する明るさ変化率 |
| 前方散乱非対称係数 |
gf |
0.8 to 1 |
前方散乱の強さ |
| 後方散乱非対称係数 |
gb |
-1 to -0.5 |
後方散乱の強さ |
| 分配係数 |
k |
0.8 to 1 |
前方/後方散乱の寄与比 |
| ダスト/ガス明るさ比 |
δ90 |
1 to 10 |
ダスト散乱とガス放射の相対寄与 |
参考: EPSC-DPS2025-160
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
21:29:36.16 |
-73:43:37.3 |
HIP 106360 |
15.70 |
| 2026-06-01 12:00 |
21:29:33.51 |
-73:44:07.1 |
HIP 106360 |
15.53 |
| 2026-06-02 00:00 |
21:29:30.79 |
-73:44:36.9 |
HIP 106360 |
15.38 |
| 2026-06-02 12:00 |
21:29:28.02 |
-73:45:06.7 |
HIP 106360 |
15.26 |
| 2026-06-03 00:00 |
21:29:25.18 |
-73:45:36.4 |
HIP 106360 |
15.15 |
| 2026-06-03 12:00 |
21:29:22.28 |
-73:46:06.0 |
HIP 106360 |
15.07 |
| 2026-06-04 00:00 |
21:29:19.31 |
-73:46:35.6 |
HIP 106360 |
15.01 |
| 2026-06-04 12:00 |
21:29:16.29 |
-73:47:05.2 |
HIP 106360 |
14.98 |
| 2026-06-05 00:00 |
21:29:13.20 |
-73:47:34.7 |
HIP 106360 |
14.96 |
| 2026-06-05 12:00 |
21:29:10.05 |
-73:48:04.1 |
HIP 106360 |
14.97 |
| 2026-06-06 00:00 |
21:29:06.84 |
-73:48:33.5 |
HIP 106360 |
15.01 |
| 2026-06-06 12:00 |
21:29:03.56 |
-73:49:02.8 |
HIP 106360 |
15.07 |
| 2026-06-07 00:00 |
21:29:00.23 |
-73:49:32.1 |
HIP 106360 |
15.15 |
| 2026-06-07 12:00 |
21:28:56.83 |
-73:50:01.3 |
HIP 106360 |
15.25 |
| 2026-06-08 00:00 |
21:28:53.38 |
-73:50:30.4 |
HIP 106360 |
15.38 |
| 2026-06-08 12:00 |
21:28:49.86 |
-73:50:59.4 |
HIP 106360 |
15.52 |
| 2026-06-09 00:00 |
21:28:46.28 |
-73:51:28.4 |
HIP 106360 |
15.69 |
| 2026-06-09 12:00 |
21:28:42.64 |
-73:51:57.3 |
HIP 106360 |
15.88 |
| 2026-06-10 00:00 |
21:28:38.94 |
-73:52:26.1 |
HIP 106360 |
16.10 |
| 2026-06-10 12:00 |
21:28:35.18 |
-73:52:54.9 |
HIP 106360 |
16.33 |
| 2026-06-11 00:00 |
21:28:31.35 |
-73:53:23.5 |
HIP 106360 |
16.57 |
| 2026-06-11 12:00 |
21:28:27.47 |
-73:53:52.1 |
HIP 106360 |
16.84 |
| 2026-06-12 00:00 |
21:28:23.53 |
-73:54:20.6 |
HIP 106360 |
17.12 |
| 2026-06-12 12:00 |
21:28:19.53 |
-73:54:49.0 |
HIP 106360 |
17.43 |
| 2026-06-13 00:00 |
21:28:15.47 |
-73:55:17.3 |
HIP 106360 |
17.74 |
| 2026-06-13 12:00 |
21:28:11.34 |
-73:55:45.6 |
HIP 106360 |
18.07 |
| 2026-06-14 00:00 |
21:28:07.16 |
-73:56:13.7 |
HIP 106190 |
18.23 |
| 2026-06-14 12:00 |
21:28:02.93 |
-73:56:41.7 |
HIP 106190 |
18.01 |
| 2026-06-15 00:00 |
21:27:58.63 |
-73:57:09.6 |
HIP 106190 |
17.80 |
| 2026-06-15 12:00 |
21:27:54.27 |
-73:57:37.5 |
HIP 106190 |
17.61 |
| 2026-06-16 00:00 |
21:27:49.86 |
-73:58:05.2 |
HIP 106190 |
17.44 |
| 2026-06-16 12:00 |
21:27:45.39 |
-73:58:32.8 |
HIP 106190 |
17.29 |
| 2026-06-17 00:00 |
21:27:40.86 |
-73:59:00.3 |
HIP 106190 |
17.16 |
| 2026-06-17 12:00 |
21:27:36.27 |
-73:59:27.7 |
HIP 106190 |
17.05 |
| 2026-06-18 00:00 |
21:27:31.63 |
-73:59:54.9 |
HIP 106190 |
16.96 |
| 2026-06-18 12:00 |
21:27:26.93 |
-74:00:22.1 |
HIP 106190 |
16.90 |
| 2026-06-19 00:00 |
21:27:22.17 |
-74:00:49.1 |
HIP 106190 |
16.86 |
| 2026-06-19 12:00 |
21:27:17.36 |
-74:01:16.0 |
HIP 106190 |
16.83 |
| 2026-06-20 00:00 |
21:27:12.49 |
-74:01:42.8 |
HIP 106190 |
16.84 |
| 2026-06-20 12:00 |
21:27:07.57 |
-74:02:09.5 |
HIP 106190 |
16.86 |
| 2026-06-21 00:00 |
21:27:02.60 |
-74:02:36.0 |
HIP 106190 |
16.91 |
| 2026-06-21 12:00 |
21:26:57.57 |
-74:03:02.4 |
HIP 106190 |
16.97 |
| 2026-06-22 00:00 |
21:26:52.48 |
-74:03:28.7 |
HIP 106190 |
17.06 |