メタデータ
| 項目 |
値 |
| Designation |
C/2009 T3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-01-12T01:21:23.293440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:35Z |
| Obs used |
401 |
| NEO |
- |
| M1 |
13.600 |
| K1 |
8.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2009-12-02.0000000 |
| e |
0.99947085 |
| q (au) |
2.281140 |
| a (au) |
4310.962625 |
| i (deg) |
148.741818 |
| Ω (om, deg) |
60.093017 |
| ω (w, deg) |
32.447789 |
| M (ma, deg) |
359.999857 |
等級
散乱 + 全体線形
$$
M_a = (12.720 + 3.596\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.720 |
| n |
3.596 |
| gf |
1.000 |
| gb |
-0.724 |
| k |
0.998 |
| δ90 |
9.993 |
| 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) |
| 2026-05-12 00:00 |
15:42:27.89 |
-21:04:43.7 |
HIP 77000 |
12.29 |
| 2026-05-12 12:00 |
15:42:23.98 |
-21:04:33.1 |
HIP 77000 |
13.22 |
| 2026-05-13 00:00 |
15:42:20.07 |
-21:04:22.4 |
HIP 77000 |
14.15 |
| 2026-05-13 12:00 |
15:42:16.16 |
-21:04:11.7 |
HIP 77000 |
15.08 |
| 2026-05-14 00:00 |
15:42:12.24 |
-21:04:01.0 |
HIP 77000 |
16.01 |
| 2026-05-14 12:00 |
15:42:08.32 |
-21:03:50.2 |
HIP 77000 |
16.94 |
| 2026-05-15 00:00 |
15:42:04.40 |
-21:03:39.5 |
HIP 77000 |
17.88 |
| 2026-05-15 12:00 |
15:42:00.48 |
-21:03:28.6 |
HIP 77000 |
18.81 |
| 2026-05-16 00:00 |
15:41:56.56 |
-21:03:17.8 |
HIP 77000 |
19.74 |
| 2026-05-16 12:00 |
15:41:52.63 |
-21:03:07.0 |
HIP 77000 |
20.67 |
| 2026-05-17 00:00 |
15:41:48.71 |
-21:02:56.1 |
HIP 76758 |
20.54 |
| 2026-05-17 12:00 |
15:41:44.78 |
-21:02:45.2 |
HIP 76758 |
19.60 |
| 2026-05-18 00:00 |
15:41:40.85 |
-21:02:34.3 |
HIP 76758 |
18.67 |
| 2026-05-18 12:00 |
15:41:36.93 |
-21:02:23.4 |
HIP 76758 |
17.73 |
| 2026-05-19 00:00 |
15:41:33.00 |
-21:02:12.5 |
HIP 76758 |
16.80 |
| 2026-05-19 12:00 |
15:41:29.08 |
-21:02:01.5 |
HIP 76758 |
15.87 |
| 2026-05-20 00:00 |
15:41:25.15 |
-21:01:50.6 |
HIP 76758 |
14.94 |
| 2026-05-20 12:00 |
15:41:21.23 |
-21:01:39.6 |
HIP 76758 |
14.00 |
| 2026-05-21 00:00 |
15:41:17.31 |
-21:01:28.6 |
HIP 76758 |
13.07 |
| 2026-05-21 12:00 |
15:41:13.39 |
-21:01:17.6 |
HIP 76758 |
12.14 |
| 2026-05-22 00:00 |
15:41:09.47 |
-21:01:06.6 |
HIP 76758 |
11.21 |
| 2026-05-22 12:00 |
15:41:05.55 |
-21:00:55.6 |
HIP 76758 |
10.28 |
| 2026-05-23 00:00 |
15:41:01.64 |
-21:00:44.5 |
HIP 76758 |
9.35 |
| 2026-05-23 12:00 |
15:40:57.73 |
-21:00:33.5 |
HIP 76758 |
8.42 |
| 2026-05-24 00:00 |
15:40:53.83 |
-21:00:22.5 |
HIP 76758 |
7.49 |
| 2026-05-24 12:00 |
15:40:49.93 |
-21:00:11.4 |
HIP 76758 |
6.57 |
| 2026-05-25 00:00 |
15:40:46.03 |
-21:00:00.4 |
HIP 76758 |
5.65 |
| 2026-05-25 12:00 |
15:40:42.14 |
-20:59:49.3 |
HIP 76758 |
4.73 |
| 2026-05-26 00:00 |
15:40:38.25 |
-20:59:38.3 |
HIP 76758 |
3.81 |
| 2026-05-26 12:00 |
15:40:34.36 |
-20:59:27.2 |
HIP 76758 |
2.90 |
| 2026-05-27 00:00 |
15:40:30.48 |
-20:59:16.1 |
HIP 76758 |
2.01 |
| 2026-05-27 12:00 |
15:40:26.61 |
-20:59:05.1 |
HIP 76758 |
1.18 |
| 2026-05-28 00:00 |
15:40:22.74 |
-20:58:54.0 |
HIP 76758 |
0.65 |
| 2026-05-28 12:00 |
15:40:18.88 |
-20:58:43.0 |
HIP 76758 |
1.07 |
| 2026-05-29 00:00 |
15:40:15.02 |
-20:58:31.9 |
HIP 76758 |
1.89 |
| 2026-05-29 12:00 |
15:40:11.17 |
-20:58:20.9 |
HIP 76758 |
2.77 |
| 2026-05-30 00:00 |
15:40:07.33 |
-20:58:09.8 |
HIP 76758 |
3.67 |
| 2026-05-30 12:00 |
15:40:03.49 |
-20:57:58.8 |
HIP 76758 |
4.57 |
| 2026-05-31 00:00 |
15:39:59.66 |
-20:57:47.7 |
HIP 76758 |
5.47 |
| 2026-05-31 12:00 |
15:39:55.84 |
-20:57:36.7 |
HIP 76758 |
6.38 |
| 2026-06-01 00:00 |
15:39:52.03 |
-20:57:25.7 |
HIP 76758 |
7.28 |
| 2026-06-01 12:00 |
15:39:48.22 |
-20:57:14.7 |
HIP 76758 |
8.19 |
| 2026-06-02 00:00 |
15:39:44.42 |
-20:57:03.7 |
HIP 76758 |
9.09 |