メタデータ
| 項目 |
値 |
| Designation |
C/2000 S3 (LONEOS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-07-16T07:19:31.595520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:06Z |
| Obs used |
33 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
21.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2000-10-24.0000000 |
| e |
0.77228725 |
| q (au) |
2.662232 |
| a (au) |
11.691185 |
| i (deg) |
25.164344 |
| Ω (om, deg) |
41.153195 |
| ω (w, deg) |
298.271387 |
| M (ma, deg) |
2.458039 |
等級
散乱 + 全体線形
$$
M_a = (16.319 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.319 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.587 |
| k |
0.800 |
| 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) |
| 2026-09-20 00:00 |
12:08:07.67 |
+18:40:36.8 |
HIP 59152 |
16.81 |
| 2026-09-20 12:00 |
12:08:13.81 |
+18:39:55.3 |
HIP 59152 |
17.87 |
| 2026-09-21 00:00 |
12:08:19.95 |
+18:39:14.1 |
HIP 59152 |
19.00 |
| 2026-09-21 12:00 |
12:08:26.09 |
+18:38:33.0 |
HIP 59152 |
20.19 |
| 2026-09-22 00:00 |
12:08:32.23 |
+18:37:52.2 |
HIP 59238 |
19.87 |
| 2026-09-22 12:00 |
12:08:38.38 |
+18:37:11.6 |
HIP 59238 |
18.75 |
| 2026-09-23 00:00 |
12:08:44.53 |
+18:36:31.2 |
HIP 59238 |
17.72 |
| 2026-09-23 12:00 |
12:08:50.69 |
+18:35:51.0 |
HIP 59238 |
16.77 |
| 2026-09-24 00:00 |
12:08:56.84 |
+18:35:11.1 |
HIP 59238 |
15.94 |
| 2026-09-24 12:00 |
12:09:03.00 |
+18:34:31.3 |
HIP 59238 |
15.23 |
| 2026-09-25 00:00 |
12:09:09.16 |
+18:33:51.8 |
HIP 59238 |
14.66 |
| 2026-09-25 12:00 |
12:09:15.31 |
+18:33:12.5 |
HIP 59238 |
14.26 |
| 2026-09-26 00:00 |
12:09:21.47 |
+18:32:33.5 |
HIP 59238 |
14.04 |
| 2026-09-26 12:00 |
12:09:27.63 |
+18:31:54.7 |
HIP 59238 |
14.00 |
| 2026-09-27 00:00 |
12:09:33.79 |
+18:31:16.1 |
HIP 59238 |
14.14 |
| 2026-09-27 12:00 |
12:09:39.95 |
+18:30:37.7 |
HIP 59238 |
14.47 |
| 2026-09-28 00:00 |
12:09:46.11 |
+18:29:59.6 |
HIP 59238 |
14.96 |
| 2026-09-28 12:00 |
12:09:52.27 |
+18:29:21.7 |
HIP 59238 |
15.60 |
| 2026-09-29 00:00 |
12:09:58.43 |
+18:28:44.0 |
HIP 59238 |
16.37 |
| 2026-09-29 12:00 |
12:10:04.58 |
+18:28:06.6 |
HIP 59391 |
16.58 |
| 2026-09-30 00:00 |
12:10:10.73 |
+18:27:29.5 |
HIP 59391 |
15.78 |
| 2026-09-30 12:00 |
12:10:16.89 |
+18:26:52.6 |
HIP 59391 |
15.11 |
| 2026-10-01 00:00 |
12:10:23.03 |
+18:26:15.9 |
HIP 59391 |
14.58 |
| 2026-10-01 12:00 |
12:10:29.18 |
+18:25:39.5 |
HIP 59391 |
14.20 |
| 2026-10-02 00:00 |
12:10:35.32 |
+18:25:03.3 |
HIP 59391 |
13.99 |
| 2026-10-02 12:00 |
12:10:41.46 |
+18:24:27.4 |
HIP 59391 |
13.94 |
| 2026-10-03 00:00 |
12:10:47.60 |
+18:23:51.8 |
HIP 59391 |
14.07 |
| 2026-10-03 12:00 |
12:10:53.73 |
+18:23:16.4 |
HIP 59391 |
14.37 |
| 2026-10-04 00:00 |
12:10:59.85 |
+18:22:41.2 |
HIP 59391 |
14.83 |
| 2026-10-04 12:00 |
12:11:05.97 |
+18:22:06.4 |
HIP 59391 |
15.42 |
| 2026-10-05 00:00 |
12:11:12.09 |
+18:21:31.8 |
HIP 59391 |
16.14 |
| 2026-10-05 12:00 |
12:11:18.20 |
+18:20:57.4 |
HIP 59391 |
16.97 |
| 2026-10-06 00:00 |
12:11:24.30 |
+18:20:23.3 |
HIP 59391 |
17.90 |
| 2026-10-06 12:00 |
12:11:30.40 |
+18:19:49.6 |
HIP 59391 |
18.90 |
| 2026-10-07 00:00 |
12:11:36.49 |
+18:19:16.0 |
HIP 59391 |
19.97 |
| 2026-10-07 12:00 |
12:11:42.58 |
+18:18:42.8 |
HIP 59550 |
20.24 |
| 2026-10-08 00:00 |
12:11:48.65 |
+18:18:09.8 |
HIP 59550 |
19.57 |
| 2026-10-08 12:00 |
12:11:54.72 |
+18:17:37.1 |
HIP 59550 |
18.99 |
| 2026-10-09 00:00 |
12:12:00.78 |
+18:17:04.8 |
HIP 59550 |
18.52 |
| 2026-10-09 12:00 |
12:12:06.83 |
+18:16:32.6 |
HIP 59550 |
18.17 |
| 2026-10-10 00:00 |
12:12:12.88 |
+18:16:00.8 |
HIP 59550 |
17.93 |
| 2026-10-10 12:00 |
12:12:18.91 |
+18:15:29.3 |
HIP 59550 |
17.83 |
| 2026-10-11 00:00 |
12:12:24.93 |
+18:14:58.0 |
HIP 59550 |
17.84 |