メタデータ
| 項目 |
値 |
| Designation |
C/2002 A1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-11-27T13:19:30.161280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:12Z |
| Obs used |
124 |
| NEO |
- |
| M1 |
8.200 |
| K1 |
11.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2002-06-06.0000000 |
| e |
0.72578378 |
| q (au) |
4.710957 |
| a (au) |
17.179715 |
| i (deg) |
14.057508 |
| Ω (om, deg) |
81.807737 |
| ω (w, deg) |
18.909060 |
| M (ma, deg) |
2.636023 |
等級
散乱 + 全体線形
$$
M_a = (9.195 + 3.997\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.195 |
| n |
3.997 |
| gf |
0.913 |
| gb |
-0.906 |
| k |
1.000 |
| δ90 |
3.685 |
| 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) |
| 2026-09-20 00:00 |
17:47:34.47 |
-25:29:31.1 |
HIP 87093 |
18.31 |
| 2026-09-20 12:00 |
17:47:35.06 |
-25:29:30.5 |
HIP 87093 |
18.29 |
| 2026-09-21 00:00 |
17:47:35.68 |
-25:29:30.0 |
HIP 87093 |
18.26 |
| 2026-09-21 12:00 |
17:47:36.35 |
-25:29:29.5 |
HIP 87093 |
18.24 |
| 2026-09-22 00:00 |
17:47:37.06 |
-25:29:29.0 |
HIP 87093 |
18.22 |
| 2026-09-22 12:00 |
17:47:37.81 |
-25:29:28.5 |
HIP 87093 |
18.20 |
| 2026-09-23 00:00 |
17:47:38.60 |
-25:29:28.1 |
HIP 87093 |
18.18 |
| 2026-09-23 12:00 |
17:47:39.43 |
-25:29:27.6 |
HIP 87093 |
18.16 |
| 2026-09-24 00:00 |
17:47:40.30 |
-25:29:27.2 |
HIP 87093 |
18.14 |
| 2026-09-24 12:00 |
17:47:41.22 |
-25:29:26.8 |
HIP 87093 |
18.13 |
| 2026-09-25 00:00 |
17:47:42.18 |
-25:29:26.3 |
HIP 87093 |
18.11 |
| 2026-09-25 12:00 |
17:47:43.17 |
-25:29:25.9 |
HIP 87093 |
18.10 |
| 2026-09-26 00:00 |
17:47:44.21 |
-25:29:25.6 |
HIP 87093 |
18.10 |
| 2026-09-26 12:00 |
17:47:45.29 |
-25:29:25.2 |
HIP 87093 |
18.09 |
| 2026-09-27 00:00 |
17:47:46.42 |
-25:29:24.8 |
HIP 87093 |
18.09 |
| 2026-09-27 12:00 |
17:47:47.58 |
-25:29:24.5 |
HIP 87093 |
18.10 |
| 2026-09-28 00:00 |
17:47:48.78 |
-25:29:24.1 |
HIP 87093 |
18.11 |
| 2026-09-28 12:00 |
17:47:50.03 |
-25:29:23.8 |
HIP 87093 |
18.12 |
| 2026-09-29 00:00 |
17:47:51.31 |
-25:29:23.5 |
HIP 87093 |
18.14 |
| 2026-09-29 12:00 |
17:47:52.64 |
-25:29:23.2 |
HIP 87093 |
18.17 |
| 2026-09-30 00:00 |
17:47:54.01 |
-25:29:23.0 |
HIP 87093 |
18.20 |
| 2026-09-30 12:00 |
17:47:55.41 |
-25:29:22.7 |
HIP 87093 |
18.24 |
| 2026-10-01 00:00 |
17:47:56.86 |
-25:29:22.5 |
HIP 87093 |
18.29 |
| 2026-10-01 12:00 |
17:47:58.35 |
-25:29:22.2 |
HIP 87093 |
18.34 |
| 2026-10-02 00:00 |
17:47:59.88 |
-25:29:22.0 |
HIP 87093 |
18.40 |
| 2026-10-02 12:00 |
17:48:01.45 |
-25:29:21.8 |
HIP 87093 |
18.47 |
| 2026-10-03 00:00 |
17:48:03.06 |
-25:29:21.7 |
HIP 87093 |
18.55 |
| 2026-10-03 12:00 |
17:48:04.71 |
-25:29:21.5 |
HIP 87093 |
18.64 |
| 2026-10-04 00:00 |
17:48:06.40 |
-25:29:21.3 |
HIP 87093 |
18.74 |
| 2026-10-04 12:00 |
17:48:08.13 |
-25:29:21.2 |
HIP 87093 |
18.84 |
| 2026-10-05 00:00 |
17:48:09.90 |
-25:29:21.1 |
HIP 87093 |
18.96 |
| 2026-10-05 12:00 |
17:48:11.71 |
-25:29:21.0 |
HIP 87093 |
19.09 |
| 2026-10-06 00:00 |
17:48:13.56 |
-25:29:20.9 |
HIP 87093 |
19.23 |
| 2026-10-06 12:00 |
17:48:15.45 |
-25:29:20.8 |
HIP 87093 |
19.39 |
| 2026-10-07 00:00 |
17:48:17.38 |
-25:29:20.7 |
HIP 87093 |
19.55 |
| 2026-10-07 12:00 |
17:48:19.35 |
-25:29:20.7 |
HIP 87093 |
19.73 |
| 2026-10-08 00:00 |
17:48:21.36 |
-25:29:20.7 |
HIP 87093 |
19.92 |
| 2026-10-08 12:00 |
17:48:23.40 |
-25:29:20.7 |
HIP 87093 |
20.12 |
| 2026-10-09 00:00 |
17:48:25.49 |
-25:29:20.7 |
HIP 87093 |
20.33 |
| 2026-10-09 12:00 |
17:48:27.62 |
-25:29:20.7 |
HIP 87093 |
20.56 |
| 2026-10-10 00:00 |
17:48:29.78 |
-25:29:20.7 |
HIP 87093 |
20.80 |
| 2026-10-10 12:00 |
17:48:31.99 |
-25:29:20.7 |
HIP 87093 |
21.05 |
| 2026-10-11 00:00 |
17:48:34.23 |
-25:29:20.8 |
HIP 87093 |
21.32 |