メタデータ
| 項目 |
値 |
| Designation |
C/1999 T2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-11-24T11:11:44.891520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:02Z |
| Obs used |
1021 |
| NEO |
- |
| M1 |
8.400 |
| K1 |
8.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2000-10-10.0000000 |
| e |
1.00201162 |
| q (au) |
3.037404 |
| a (au) |
-1509.929133 |
| i (deg) |
111.002049 |
| Ω (om, deg) |
14.878823 |
| ω (w, deg) |
104.667943 |
| M (ma, deg) |
-0.000764 |
等級
散乱 + 全体線形
$$
M_a = (6.101 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.101 |
| n |
6.000 |
| gf |
0.988 |
| gb |
-0.731 |
| k |
0.800 |
| 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 |
07:52:01.85 |
-46:24:15.9 |
HIP 38294 |
13.92 |
| 2026-03-26 12:00 |
07:52:00.29 |
-46:23:41.4 |
HIP 38294 |
13.49 |
| 2026-03-27 00:00 |
07:51:58.76 |
-46:23:06.8 |
HIP 38294 |
13.07 |
| 2026-03-27 12:00 |
07:51:57.26 |
-46:22:32.2 |
HIP 38294 |
12.68 |
| 2026-03-28 00:00 |
07:51:55.79 |
-46:21:57.5 |
HIP 38294 |
12.31 |
| 2026-03-28 12:00 |
07:51:54.35 |
-46:21:22.7 |
HIP 38294 |
11.96 |
| 2026-03-29 00:00 |
07:51:52.94 |
-46:20:47.9 |
HIP 38294 |
11.65 |
| 2026-03-29 12:00 |
07:51:51.56 |
-46:20:13.0 |
HIP 38294 |
11.37 |
| 2026-03-30 00:00 |
07:51:50.22 |
-46:19:38.0 |
HIP 38294 |
11.12 |
| 2026-03-30 12:00 |
07:51:48.90 |
-46:19:02.9 |
HIP 38294 |
10.91 |
| 2026-03-31 00:00 |
07:51:47.62 |
-46:18:27.8 |
HIP 38294 |
10.74 |
| 2026-03-31 12:00 |
07:51:46.37 |
-46:17:52.7 |
HIP 38294 |
10.60 |
| 2026-04-01 00:00 |
07:51:45.15 |
-46:17:17.5 |
HIP 38294 |
10.51 |
| 2026-04-01 12:00 |
07:51:43.96 |
-46:16:42.2 |
HIP 38294 |
10.46 |
| 2026-04-02 00:00 |
07:51:42.80 |
-46:16:06.9 |
HIP 38294 |
10.45 |
| 2026-04-02 12:00 |
07:51:41.67 |
-46:15:31.6 |
HIP 38294 |
10.48 |
| 2026-04-03 00:00 |
07:51:40.58 |
-46:14:56.2 |
HIP 38294 |
10.55 |
| 2026-04-03 12:00 |
07:51:39.51 |
-46:14:20.8 |
HIP 38294 |
10.67 |
| 2026-04-04 00:00 |
07:51:38.48 |
-46:13:45.3 |
HIP 38294 |
10.82 |
| 2026-04-04 12:00 |
07:51:37.48 |
-46:13:09.8 |
HIP 38294 |
11.01 |
| 2026-04-05 00:00 |
07:51:36.51 |
-46:12:34.3 |
HIP 38294 |
11.24 |
| 2026-04-05 12:00 |
07:51:35.57 |
-46:11:58.7 |
HIP 38294 |
11.50 |
| 2026-04-06 00:00 |
07:51:34.67 |
-46:11:23.1 |
HIP 38294 |
11.79 |
| 2026-04-06 12:00 |
07:51:33.79 |
-46:10:47.5 |
HIP 38294 |
12.11 |
| 2026-04-07 00:00 |
07:51:32.95 |
-46:10:11.9 |
HIP 38294 |
12.45 |
| 2026-04-07 12:00 |
07:51:32.14 |
-46:09:36.2 |
HIP 38294 |
12.82 |
| 2026-04-08 00:00 |
07:51:31.36 |
-46:09:00.6 |
HIP 38294 |
13.20 |
| 2026-04-08 12:00 |
07:51:30.61 |
-46:08:24.9 |
HIP 38294 |
13.61 |
| 2026-04-09 00:00 |
07:51:29.90 |
-46:07:49.2 |
HIP 38294 |
14.04 |
| 2026-04-09 12:00 |
07:51:29.21 |
-46:07:13.5 |
HIP 38294 |
14.48 |
| 2026-04-10 00:00 |
07:51:28.56 |
-46:06:37.8 |
HIP 38294 |
14.94 |
| 2026-04-10 12:00 |
07:51:27.94 |
-46:06:02.1 |
HIP 38294 |
15.41 |
| 2026-04-11 00:00 |
07:51:27.35 |
-46:05:26.3 |
HIP 38294 |
15.89 |
| 2026-04-11 12:00 |
07:51:26.79 |
-46:04:50.6 |
HIP 38294 |
16.38 |
| 2026-04-12 00:00 |
07:51:26.27 |
-46:04:14.9 |
HIP 38294 |
16.88 |
| 2026-04-12 12:00 |
07:51:25.78 |
-46:03:39.2 |
HIP 38294 |
17.39 |
| 2026-04-13 00:00 |
07:51:25.31 |
-46:03:03.6 |
HIP 38294 |
17.90 |
| 2026-04-13 12:00 |
07:51:24.88 |
-46:02:27.9 |
HIP 38294 |
18.43 |
| 2026-04-14 00:00 |
07:51:24.48 |
-46:01:52.2 |
HIP 38294 |
18.96 |
| 2026-04-14 12:00 |
07:51:24.12 |
-46:01:16.6 |
HIP 38346 |
18.90 |
| 2026-04-15 00:00 |
07:51:23.78 |
-46:00:41.0 |
HIP 38346 |
18.30 |
| 2026-04-15 12:00 |
07:51:23.48 |
-46:00:05.4 |
HIP 38346 |
17.71 |
| 2026-04-16 00:00 |
07:51:23.21 |
-45:59:29.8 |
HIP 38346 |
17.11 |