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 |
1.000 |
| gb |
-0.540 |
| 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) |
| 2026-07-29 00:00 |
22:02:48.33 |
-78:08:55.5 |
HIP 108970 |
5.75 |
| 2026-07-29 12:00 |
22:02:37.07 |
-78:09:12.0 |
HIP 108970 |
6.23 |
| 2026-07-30 00:00 |
22:02:25.78 |
-78:09:28.2 |
HIP 108970 |
6.73 |
| 2026-07-30 12:00 |
22:02:14.44 |
-78:09:44.1 |
HIP 108970 |
7.26 |
| 2026-07-31 00:00 |
22:02:03.05 |
-78:09:59.8 |
HIP 108970 |
7.81 |
| 2026-07-31 12:00 |
22:01:51.63 |
-78:10:15.1 |
HIP 108970 |
8.37 |
| 2026-08-01 00:00 |
22:01:40.16 |
-78:10:30.2 |
HIP 108970 |
8.95 |
| 2026-08-01 12:00 |
22:01:28.65 |
-78:10:44.9 |
HIP 108970 |
9.53 |
| 2026-08-02 00:00 |
22:01:17.11 |
-78:10:59.4 |
HIP 108970 |
10.13 |
| 2026-08-02 12:00 |
22:01:05.53 |
-78:11:13.6 |
HIP 108970 |
10.72 |
| 2026-08-03 00:00 |
22:00:53.91 |
-78:11:27.5 |
HIP 108970 |
11.33 |
| 2026-08-03 12:00 |
22:00:42.25 |
-78:11:41.1 |
HIP 108970 |
11.94 |
| 2026-08-04 00:00 |
22:00:30.56 |
-78:11:54.4 |
HIP 108970 |
12.55 |
| 2026-08-04 12:00 |
22:00:18.84 |
-78:12:07.4 |
HIP 108970 |
13.17 |
| 2026-08-05 00:00 |
22:00:07.08 |
-78:12:20.1 |
HIP 108970 |
13.79 |
| 2026-08-05 12:00 |
21:59:55.29 |
-78:12:32.5 |
HIP 108970 |
14.41 |
| 2026-08-06 00:00 |
21:59:43.47 |
-78:12:44.6 |
HIP 108970 |
15.03 |
| 2026-08-06 12:00 |
21:59:31.62 |
-78:12:56.3 |
HIP 108970 |
15.66 |
| 2026-08-07 00:00 |
21:59:19.74 |
-78:13:07.8 |
HIP 108970 |
16.28 |
| 2026-08-07 12:00 |
21:59:07.83 |
-78:13:19.0 |
HIP 108970 |
16.91 |
| 2026-08-08 00:00 |
21:58:55.90 |
-78:13:29.9 |
HIP 108970 |
17.54 |
| 2026-08-08 12:00 |
21:58:43.93 |
-78:13:40.4 |
HIP 108970 |
18.17 |
| 2026-08-09 00:00 |
21:58:31.95 |
-78:13:50.7 |
HIP 108970 |
18.80 |
| 2026-08-09 12:00 |
21:58:19.94 |
-78:14:00.6 |
HIP 108970 |
19.43 |
| 2026-08-10 00:00 |
21:58:07.91 |
-78:14:10.2 |
HIP 108970 |
20.06 |
| 2026-08-10 12:00 |
21:57:55.85 |
-78:14:19.5 |
HIP 108970 |
20.69 |
| 2026-08-11 00:00 |
21:57:43.78 |
-78:14:28.5 |
HIP 108970 |
21.32 |
| 2026-08-11 12:00 |
21:57:31.69 |
-78:14:37.2 |
HIP 108970 |
21.96 |
| 2026-08-12 00:00 |
21:57:19.58 |
-78:14:45.5 |
HIP 107782 |
22.13 |
| 2026-08-12 12:00 |
21:57:07.45 |
-78:14:53.6 |
HIP 107782 |
21.52 |
| 2026-08-13 00:00 |
21:56:55.30 |
-78:15:01.3 |
HIP 107782 |
20.91 |
| 2026-08-13 12:00 |
21:56:43.15 |
-78:15:08.7 |
HIP 107782 |
20.30 |
| 2026-08-14 00:00 |
21:56:30.97 |
-78:15:15.7 |
HIP 107782 |
19.69 |
| 2026-08-14 12:00 |
21:56:18.79 |
-78:15:22.5 |
HIP 107782 |
19.08 |
| 2026-08-15 00:00 |
21:56:06.60 |
-78:15:28.9 |
HIP 107782 |
18.48 |
| 2026-08-15 12:00 |
21:55:54.39 |
-78:15:35.0 |
HIP 107782 |
17.87 |
| 2026-08-16 00:00 |
21:55:42.18 |
-78:15:40.8 |
HIP 107782 |
17.27 |
| 2026-08-16 12:00 |
21:55:29.96 |
-78:15:46.3 |
HIP 107782 |
16.66 |
| 2026-08-17 00:00 |
21:55:17.73 |
-78:15:51.4 |
HIP 107782 |
16.06 |
| 2026-08-17 12:00 |
21:55:05.50 |
-78:15:56.2 |
HIP 107782 |
15.46 |
| 2026-08-18 00:00 |
21:54:53.26 |
-78:16:00.7 |
HIP 107782 |
14.86 |
| 2026-08-18 12:00 |
21:54:41.03 |
-78:16:04.8 |
HIP 107782 |
14.26 |
| 2026-08-19 00:00 |
21:54:28.79 |
-78:16:08.6 |
HIP 107782 |
13.66 |