メタデータ
| 項目 |
値 |
| Designation |
C/2000 B2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-11-10T01:23:20.175360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:03Z |
| Obs used |
86 |
| NEO |
- |
| M1 |
13.500 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2000-02-10.0000000 |
| e |
0.99949095 |
| q (au) |
3.776151 |
| a (au) |
7417.993350 |
| i (deg) |
93.648730 |
| Ω (om, deg) |
284.990983 |
| ω (w, deg) |
154.593587 |
| M (ma, deg) |
0.000142 |
等級
散乱 + 全体線形
$$
M_a = (12.297 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.297 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.997 |
| 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) |
| 2026-03-26 00:00 |
22:08:42.04 |
-76:15:20.5 |
HIP 109584 |
14.25 |
| 2026-03-26 12:00 |
22:08:49.86 |
-76:15:34.0 |
HIP 109584 |
14.01 |
| 2026-03-27 00:00 |
22:08:57.64 |
-76:15:47.7 |
HIP 109584 |
13.80 |
| 2026-03-27 12:00 |
22:09:05.37 |
-76:16:01.7 |
HIP 109584 |
13.60 |
| 2026-03-28 00:00 |
22:09:13.05 |
-76:16:15.9 |
HIP 109584 |
13.42 |
| 2026-03-28 12:00 |
22:09:20.69 |
-76:16:30.4 |
HIP 109584 |
13.27 |
| 2026-03-29 00:00 |
22:09:28.28 |
-76:16:45.2 |
HIP 109584 |
13.14 |
| 2026-03-29 12:00 |
22:09:35.82 |
-76:17:00.2 |
HIP 109584 |
13.04 |
| 2026-03-30 00:00 |
22:09:43.32 |
-76:17:15.5 |
HIP 109584 |
12.96 |
| 2026-03-30 12:00 |
22:09:50.76 |
-76:17:31.0 |
HIP 109584 |
12.90 |
| 2026-03-31 00:00 |
22:09:58.16 |
-76:17:46.7 |
HIP 109584 |
12.87 |
| 2026-03-31 12:00 |
22:10:05.51 |
-76:18:02.7 |
HIP 109584 |
12.87 |
| 2026-04-01 00:00 |
22:10:12.80 |
-76:18:19.0 |
HIP 109584 |
12.89 |
| 2026-04-01 12:00 |
22:10:20.05 |
-76:18:35.5 |
HIP 109584 |
12.94 |
| 2026-04-02 00:00 |
22:10:27.24 |
-76:18:52.3 |
HIP 109584 |
13.01 |
| 2026-04-02 12:00 |
22:10:34.38 |
-76:19:09.3 |
HIP 109584 |
13.11 |
| 2026-04-03 00:00 |
22:10:41.47 |
-76:19:26.5 |
HIP 109584 |
13.23 |
| 2026-04-03 12:00 |
22:10:48.51 |
-76:19:44.0 |
HIP 109584 |
13.38 |
| 2026-04-04 00:00 |
22:10:55.50 |
-76:20:01.7 |
HIP 109584 |
13.55 |
| 2026-04-04 12:00 |
22:11:02.43 |
-76:20:19.7 |
HIP 109584 |
13.74 |
| 2026-04-05 00:00 |
22:11:09.31 |
-76:20:37.9 |
HIP 109584 |
13.94 |
| 2026-04-05 12:00 |
22:11:16.13 |
-76:20:56.3 |
HIP 109584 |
14.17 |
| 2026-04-06 00:00 |
22:11:22.90 |
-76:21:15.0 |
HIP 109584 |
14.42 |
| 2026-04-06 12:00 |
22:11:29.62 |
-76:21:33.9 |
HIP 109584 |
14.69 |
| 2026-04-07 00:00 |
22:11:36.27 |
-76:21:53.1 |
HIP 109584 |
14.97 |
| 2026-04-07 12:00 |
22:11:42.87 |
-76:22:12.5 |
HIP 109584 |
15.27 |
| 2026-04-08 00:00 |
22:11:49.42 |
-76:22:32.1 |
HIP 109584 |
15.58 |
| 2026-04-08 12:00 |
22:11:55.91 |
-76:22:51.9 |
HIP 109584 |
15.91 |
| 2026-04-09 00:00 |
22:12:02.34 |
-76:23:12.0 |
HIP 109584 |
16.25 |
| 2026-04-09 12:00 |
22:12:08.71 |
-76:23:32.3 |
HIP 109584 |
16.60 |
| 2026-04-10 00:00 |
22:12:15.02 |
-76:23:52.9 |
HIP 109584 |
16.97 |
| 2026-04-10 12:00 |
22:12:21.27 |
-76:24:13.6 |
HIP 109584 |
17.34 |
| 2026-04-11 00:00 |
22:12:27.47 |
-76:24:34.6 |
HIP 109584 |
17.73 |
| 2026-04-11 12:00 |
22:12:33.60 |
-76:24:55.9 |
HIP 109584 |
18.12 |
| 2026-04-12 00:00 |
22:12:39.67 |
-76:25:17.3 |
HIP 109584 |
18.52 |
| 2026-04-12 12:00 |
22:12:45.68 |
-76:25:39.0 |
HIP 109584 |
18.93 |
| 2026-04-13 00:00 |
22:12:51.63 |
-76:26:00.8 |
HIP 109584 |
19.35 |
| 2026-04-13 12:00 |
22:12:57.52 |
-76:26:23.0 |
HIP 109584 |
19.78 |
| 2026-04-14 00:00 |
22:13:03.34 |
-76:26:45.3 |
HIP 109584 |
20.21 |
| 2026-04-14 12:00 |
22:13:09.10 |
-76:27:07.8 |
HIP 109584 |
20.65 |
| 2026-04-15 00:00 |
22:13:14.80 |
-76:27:30.6 |
HIP 109584 |
21.09 |
| 2026-04-15 12:00 |
22:13:20.43 |
-76:27:53.5 |
HIP 109584 |
21.54 |
| 2026-04-16 00:00 |
22:13:26.00 |
-76:28:16.7 |
HIP 109584 |
21.99 |