メタデータ
| 項目 |
値 |
| Designation |
C/2002 C2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-04-10T19:34:16.780800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:14Z |
| Obs used |
206 |
| NEO |
- |
| M1 |
10.200 |
| K1 |
8.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2002-05-23.0000000 |
| e |
0.99964080 |
| q (au) |
3.253749 |
| a (au) |
9058.346432 |
| i (deg) |
104.881376 |
| Ω (om, deg) |
242.955998 |
| ω (w, deg) |
159.933817 |
| M (ma, deg) |
0.000048 |
等級
散乱 + 全体線形
$$
M_a = (8.703 + 5.569\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.703 |
| n |
5.569 |
| gf |
0.999 |
| gb |
-0.626 |
| k |
0.800 |
| δ90 |
9.999 |
| 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) |
| 2026-06-01 00:00 |
16:42:27.31 |
-73:06:22.2 |
HIP 81597 |
12.46 |
| 2026-06-01 12:00 |
16:42:17.99 |
-73:06:17.5 |
HIP 81597 |
11.80 |
| 2026-06-02 00:00 |
16:42:08.67 |
-73:06:12.6 |
HIP 81597 |
11.14 |
| 2026-06-02 12:00 |
16:41:59.35 |
-73:06:07.3 |
HIP 81597 |
10.49 |
| 2026-06-03 00:00 |
16:41:50.04 |
-73:06:01.7 |
HIP 81597 |
9.83 |
| 2026-06-03 12:00 |
16:41:40.72 |
-73:05:55.9 |
HIP 81597 |
9.18 |
| 2026-06-04 00:00 |
16:41:31.41 |
-73:05:49.8 |
HIP 81597 |
8.53 |
| 2026-06-04 12:00 |
16:41:22.10 |
-73:05:43.4 |
HIP 81597 |
7.89 |
| 2026-06-05 00:00 |
16:41:12.80 |
-73:05:36.7 |
HIP 81597 |
7.25 |
| 2026-06-05 12:00 |
16:41:03.50 |
-73:05:29.7 |
HIP 81597 |
6.62 |
| 2026-06-06 00:00 |
16:40:54.20 |
-73:05:22.4 |
HIP 81597 |
6.00 |
| 2026-06-06 12:00 |
16:40:44.92 |
-73:05:14.8 |
HIP 81597 |
5.39 |
| 2026-06-07 00:00 |
16:40:35.64 |
-73:05:06.9 |
HIP 81597 |
4.80 |
| 2026-06-07 12:00 |
16:40:26.36 |
-73:04:58.7 |
HIP 81597 |
4.23 |
| 2026-06-08 00:00 |
16:40:17.10 |
-73:04:50.3 |
HIP 81597 |
3.71 |
| 2026-06-08 12:00 |
16:40:07.85 |
-73:04:41.6 |
HIP 81597 |
3.24 |
| 2026-06-09 00:00 |
16:39:58.61 |
-73:04:32.5 |
HIP 81597 |
2.86 |
| 2026-06-09 12:00 |
16:39:49.38 |
-73:04:23.2 |
HIP 81597 |
2.60 |
| 2026-06-10 00:00 |
16:39:40.16 |
-73:04:13.6 |
HIP 81597 |
2.51 |
| 2026-06-10 12:00 |
16:39:30.96 |
-73:04:03.8 |
HIP 81597 |
2.60 |
| 2026-06-11 00:00 |
16:39:21.76 |
-73:03:53.6 |
HIP 81597 |
2.86 |
| 2026-06-11 12:00 |
16:39:12.59 |
-73:03:43.1 |
HIP 81597 |
3.24 |
| 2026-06-12 00:00 |
16:39:03.43 |
-73:03:32.4 |
HIP 81597 |
3.71 |
| 2026-06-12 12:00 |
16:38:54.28 |
-73:03:21.4 |
HIP 81597 |
4.24 |
| 2026-06-13 00:00 |
16:38:45.15 |
-73:03:10.1 |
HIP 81597 |
4.80 |
| 2026-06-13 12:00 |
16:38:36.04 |
-73:02:58.5 |
HIP 81597 |
5.40 |
| 2026-06-14 00:00 |
16:38:26.95 |
-73:02:46.6 |
HIP 81597 |
6.01 |
| 2026-06-14 12:00 |
16:38:17.88 |
-73:02:34.5 |
HIP 81597 |
6.64 |
| 2026-06-15 00:00 |
16:38:08.83 |
-73:02:22.0 |
HIP 81597 |
7.28 |
| 2026-06-15 12:00 |
16:37:59.80 |
-73:02:09.3 |
HIP 81597 |
7.92 |
| 2026-06-16 00:00 |
16:37:50.79 |
-73:01:56.3 |
HIP 81597 |
8.57 |
| 2026-06-16 12:00 |
16:37:41.81 |
-73:01:43.1 |
HIP 81597 |
9.23 |
| 2026-06-17 00:00 |
16:37:32.85 |
-73:01:29.6 |
HIP 81597 |
9.89 |
| 2026-06-17 12:00 |
16:37:23.91 |
-73:01:15.7 |
HIP 81597 |
10.55 |
| 2026-06-18 00:00 |
16:37:15.00 |
-73:01:01.7 |
HIP 81597 |
11.21 |
| 2026-06-18 12:00 |
16:37:06.11 |
-73:00:47.3 |
HIP 81597 |
11.88 |
| 2026-06-19 00:00 |
16:36:57.25 |
-73:00:32.7 |
HIP 81155 |
12.27 |
| 2026-06-19 12:00 |
16:36:48.42 |
-73:00:17.8 |
HIP 81155 |
11.58 |
| 2026-06-20 00:00 |
16:36:39.62 |
-73:00:02.6 |
HIP 81155 |
10.89 |
| 2026-06-20 12:00 |
16:36:30.85 |
-72:59:47.2 |
HIP 81155 |
10.21 |
| 2026-06-21 00:00 |
16:36:22.10 |
-72:59:31.5 |
HIP 81155 |
9.52 |
| 2026-06-21 12:00 |
16:36:13.39 |
-72:59:15.6 |
HIP 81155 |
8.83 |
| 2026-06-22 00:00 |
16:36:04.71 |
-72:58:59.4 |
HIP 81155 |
8.15 |