C/2002 B1 (LINEAR)
メタデータ
| 項目 |
値 |
| Designation |
C/2002 B1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-04-20T00:07:40.019520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:13Z |
| Obs used |
92 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
24.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2002-02-09.0000000 |
| e |
0.77101055 |
| q (au) |
2.271129 |
| a (au) |
9.918053 |
| i (deg) |
51.021341 |
| Ω (om, deg) |
58.185425 |
| ω (w, deg) |
76.158399 |
| M (ma, deg) |
357.791001 |
等級
散乱 + 全体線形
$$
M_a = (9.865 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.865 |
| 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) |
| 2026-02-03 00:00 |
00:27:44.63 |
-50:21:03.3 |
HIP 2256 |
14.33 |
| 2026-02-03 12:00 |
00:27:52.91 |
-50:19:11.9 |
HIP 2256 |
15.06 |
| 2026-02-04 00:00 |
00:28:01.25 |
-50:17:20.9 |
HIP 2256 |
16.06 |
| 2026-02-04 12:00 |
00:28:09.67 |
-50:15:30.1 |
HIP 2256 |
17.30 |
| 2026-02-05 00:00 |
00:28:18.16 |
-50:13:39.7 |
HIP 2256 |
18.73 |
| 2026-02-05 12:00 |
00:28:26.71 |
-50:11:49.5 |
HIP 2256 |
20.31 |
| 2026-02-06 00:00 |
00:28:35.34 |
-50:09:59.7 |
HIP 2256 |
22.01 |
| 2026-02-06 12:00 |
00:28:44.03 |
-50:08:10.2 |
HIP 2256 |
23.80 |
| 2026-02-07 00:00 |
00:28:52.79 |
-50:06:21.1 |
HIP 2217 |
23.67 |
| 2026-02-07 12:00 |
00:29:01.62 |
-50:04:32.2 |
HIP 2217 |
22.55 |
| 2026-02-08 00:00 |
00:29:10.52 |
-50:02:43.7 |
HIP 2217 |
21.64 |
| 2026-02-08 12:00 |
00:29:19.48 |
-50:00:55.6 |
HIP 2217 |
20.95 |
| 2026-02-09 00:00 |
00:29:28.51 |
-49:59:07.8 |
HIP 2217 |
20.51 |
| 2026-02-09 12:00 |
00:29:37.60 |
-49:57:20.3 |
HIP 2217 |
20.34 |
| 2026-02-10 00:00 |
00:29:46.76 |
-49:55:33.2 |
HIP 2217 |
20.45 |
| 2026-02-10 12:00 |
00:29:55.98 |
-49:53:46.5 |
HIP 2217 |
20.83 |
| 2026-02-11 00:00 |
00:30:05.27 |
-49:52:00.1 |
HIP 2217 |
21.47 |
| 2026-02-11 12:00 |
00:30:14.61 |
-49:50:14.1 |
HIP 2217 |
22.34 |
| 2026-02-12 00:00 |
00:30:24.03 |
-49:48:28.5 |
HIP 2217 |
23.43 |
| 2026-02-12 12:00 |
00:30:33.50 |
-49:46:43.3 |
HIP 2217 |
24.70 |
| 2026-02-13 00:00 |
00:30:43.03 |
-49:44:58.4 |
HIP 2217 |
26.13 |
| 2026-02-13 12:00 |
00:30:52.63 |
-49:43:14.0 |
HIP 2217 |
27.69 |
| 2026-02-14 00:00 |
00:31:02.28 |
-49:41:29.9 |
HIP 2217 |
29.37 |
| 2026-02-14 12:00 |
00:31:11.99 |
-49:39:46.3 |
HIP 2217 |
31.14 |
| 2026-02-15 00:00 |
00:31:21.76 |
-49:38:03.0 |
HIP 2217 |
32.99 |
| 2026-02-15 12:00 |
00:31:31.59 |
-49:36:20.2 |
HIP 2217 |
34.90 |
| 2026-02-16 00:00 |
00:31:41.48 |
-49:34:37.8 |
HIP 2217 |
36.88 |
| 2026-02-16 12:00 |
00:31:51.43 |
-49:32:55.9 |
HIP 2217 |
38.90 |
| 2026-02-17 00:00 |
00:32:01.43 |
-49:31:14.3 |
HIP 2261 |
40.19 |
| 2026-02-17 12:00 |
00:32:11.48 |
-49:29:33.2 |
HIP 2261 |
40.48 |
| 2026-02-18 00:00 |
00:32:21.59 |
-49:27:52.6 |
HIP 2472 |
40.73 |
| 2026-02-18 12:00 |
00:32:31.76 |
-49:26:12.4 |
HIP 2747 |
38.95 |
| 2026-02-19 00:00 |
00:32:41.97 |
-49:24:32.6 |
HIP 2747 |
36.61 |
| 2026-02-19 12:00 |
00:32:52.25 |
-49:22:53.3 |
HIP 2747 |
34.27 |
| 2026-02-20 00:00 |
00:33:02.57 |
-49:21:14.5 |
HIP 2747 |
31.94 |
| 2026-02-20 12:00 |
00:33:12.94 |
-49:19:36.1 |
HIP 2747 |
29.61 |
| 2026-02-21 00:00 |
00:33:23.37 |
-49:17:58.2 |
HIP 2747 |
27.28 |
| 2026-02-21 12:00 |
00:33:33.84 |
-49:16:20.8 |
HIP 2747 |
24.96 |
| 2026-02-22 00:00 |
00:33:44.37 |
-49:14:43.9 |
HIP 2747 |
22.65 |
| 2026-02-22 12:00 |
00:33:54.94 |
-49:13:07.4 |
HIP 2747 |
20.35 |
| 2026-02-23 00:00 |
00:34:05.57 |
-49:11:31.5 |
HIP 2747 |
18.07 |
| 2026-02-23 12:00 |
00:34:16.23 |
-49:09:56.0 |
HIP 2747 |
15.82 |
| 2026-02-24 00:00 |
00:34:26.95 |
-49:08:21.1 |
HIP 2747 |
13.61 |