メタデータ
| 項目 |
値 |
| Designation |
P/2000 R2 (LINEAR) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2000-09-12T15:47:05.478720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:05Z |
| Obs used |
56 |
| NEO |
- |
| M1 |
19.300 |
| 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) |
2000-09-20.0000000 |
| e |
0.58365455 |
| q (au) |
1.389967 |
| a (au) |
3.338494 |
| i (deg) |
3.216342 |
| Ω (om, deg) |
187.499425 |
| ω (w, deg) |
147.063490 |
| M (ma, deg) |
1.186343 |
等級
散乱 + 全体線形
$$
M_a = (19.097 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
19.097 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.987 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
05:49:46.73 |
+14:14:18.0 |
HIP 27581 |
10.99 |
| 2026-07-29 12:00 |
05:50:32.71 |
+14:13:45.4 |
HIP 27581 |
4.68 |
| 2026-07-30 00:00 |
05:51:18.54 |
+14:13:11.6 |
HIP 27618 |
12.23 |
| 2026-07-30 12:00 |
05:52:04.23 |
+14:12:36.7 |
HIP 27743 |
4.95 |
| 2026-07-31 00:00 |
05:52:49.78 |
+14:12:00.6 |
HIP 27743 |
6.87 |
| 2026-07-31 12:00 |
05:53:35.17 |
+14:11:23.5 |
HIP 27856 |
14.58 |
| 2026-08-01 00:00 |
05:54:20.41 |
+14:10:45.2 |
HIP 27961 |
8.78 |
| 2026-08-01 12:00 |
05:55:05.51 |
+14:10:05.9 |
HIP 27961 |
3.98 |
| 2026-08-02 00:00 |
05:55:50.46 |
+14:09:25.4 |
HIP 27961 |
13.91 |
| 2026-08-02 12:00 |
05:56:35.26 |
+14:08:43.9 |
HIP 28066 |
15.29 |
| 2026-08-03 00:00 |
05:57:19.90 |
+14:08:01.3 |
HIP 28066 |
22.39 |
| 2026-08-03 12:00 |
05:58:04.40 |
+14:07:17.6 |
HIP 28314 |
18.93 |
| 2026-08-04 00:00 |
05:58:48.74 |
+14:06:32.8 |
HIP 28314 |
14.73 |
| 2026-08-04 12:00 |
05:59:32.93 |
+14:05:47.0 |
HIP 28314 |
17.55 |
| 2026-08-05 00:00 |
06:00:16.96 |
+14:05:00.1 |
HIP 28345 |
24.71 |
| 2026-08-05 12:00 |
06:01:00.84 |
+14:04:12.2 |
HIP 28345 |
31.19 |
| 2026-08-06 00:00 |
06:01:44.57 |
+14:03:23.2 |
HIP 28663 |
27.54 |
| 2026-08-06 12:00 |
06:02:28.14 |
+14:02:33.2 |
HIP 28663 |
21.71 |
| 2026-08-07 00:00 |
06:03:11.55 |
+14:01:42.1 |
HIP 28663 |
20.23 |
| 2026-08-07 12:00 |
06:03:54.80 |
+14:00:50.1 |
HIP 28663 |
23.87 |
| 2026-08-08 00:00 |
06:04:37.90 |
+13:59:57.0 |
HIP 28813 |
23.90 |
| 2026-08-08 12:00 |
06:05:20.83 |
+13:59:02.9 |
HIP 28813 |
24.90 |
| 2026-08-09 00:00 |
06:06:03.61 |
+13:58:07.8 |
HIP 28903 |
25.92 |
| 2026-08-09 12:00 |
06:06:46.22 |
+13:57:11.7 |
HIP 29106 |
22.32 |
| 2026-08-10 00:00 |
06:07:28.67 |
+13:56:14.6 |
HIP 29106 |
12.17 |
| 2026-08-10 12:00 |
06:08:10.96 |
+13:55:16.5 |
HIP 29106 |
3.48 |
| 2026-08-11 00:00 |
06:08:53.08 |
+13:54:17.4 |
HIP 29127 |
6.32 |
| 2026-08-11 12:00 |
06:09:35.03 |
+13:53:17.4 |
HIP 29127 |
16.00 |
| 2026-08-12 00:00 |
06:10:16.82 |
+13:52:16.4 |
HIP 29310 |
14.71 |
| 2026-08-12 12:00 |
06:10:58.44 |
+13:51:14.5 |
HIP 29310 |
11.98 |
| 2026-08-13 00:00 |
06:11:39.89 |
+13:50:11.6 |
HIP 29371 |
12.23 |
| 2026-08-13 12:00 |
06:12:21.17 |
+13:49:07.8 |
HIP 29371 |
16.86 |
| 2026-08-14 00:00 |
06:13:02.28 |
+13:48:03.1 |
HIP 29544 |
14.81 |
| 2026-08-14 12:00 |
06:13:43.22 |
+13:46:57.4 |
HIP 29544 |
14.32 |
| 2026-08-15 00:00 |
06:14:23.98 |
+13:45:50.9 |
HIP 29678 |
11.99 |
| 2026-08-15 12:00 |
06:15:04.58 |
+13:44:43.4 |
HIP 29678 |
6.41 |
| 2026-08-16 00:00 |
06:15:44.99 |
+13:43:35.1 |
HIP 29678 |
11.60 |
| 2026-08-16 12:00 |
06:16:25.24 |
+13:42:25.8 |
HIP 29678 |
20.54 |
| 2026-08-17 00:00 |
06:17:05.30 |
+13:41:15.7 |
HIP 29881 |
23.27 |
| 2026-08-17 12:00 |
06:17:45.19 |
+13:40:04.8 |
HIP 29881 |
23.62 |
| 2026-08-18 00:00 |
06:18:24.91 |
+13:38:52.9 |
HIP 30051 |
19.52 |
| 2026-08-18 12:00 |
06:19:04.44 |
+13:37:40.2 |
HIP 30055 |
12.30 |
| 2026-08-19 00:00 |
06:19:43.80 |
+13:36:26.7 |
HIP 30055 |
10.21 |