メタデータ
| 項目 |
値 |
| Designation |
C/2005 R4 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-03-08T00:19:13.751040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:52Z |
| Obs used |
491 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2006-02-13.0000000 |
| e |
0.99748824 |
| q (au) |
5.188469 |
| a (au) |
2065.668817 |
| i (deg) |
164.012596 |
| Ω (om, deg) |
63.771672 |
| ω (w, deg) |
6.886614 |
| M (ma, deg) |
359.999758 |
等級
散乱 + 全体線形
$$
M_a = (6.968 + 4.305\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.968 |
| n |
4.305 |
| gf |
0.874 |
| gb |
-0.884 |
| k |
0.999 |
| δ90 |
1.000 |
| 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) |
| 2026-06-01 00:00 |
18:41:20.53 |
-13:21:56.0 |
HIP 91608 |
5.68 |
| 2026-06-01 12:00 |
18:41:17.37 |
-13:21:56.3 |
HIP 91608 |
4.92 |
| 2026-06-02 00:00 |
18:41:14.20 |
-13:21:56.5 |
HIP 91608 |
4.16 |
| 2026-06-02 12:00 |
18:41:11.01 |
-13:21:56.9 |
HIP 91608 |
3.40 |
| 2026-06-03 00:00 |
18:41:07.80 |
-13:21:57.3 |
HIP 91608 |
2.64 |
| 2026-06-03 12:00 |
18:41:04.59 |
-13:21:57.8 |
HIP 91608 |
1.90 |
| 2026-06-04 00:00 |
18:41:01.36 |
-13:21:58.4 |
HIP 91608 |
1.20 |
| 2026-06-04 12:00 |
18:40:58.11 |
-13:21:59.0 |
HIP 91608 |
0.72 |
| 2026-06-05 00:00 |
18:40:54.86 |
-13:21:59.8 |
HIP 91608 |
0.92 |
| 2026-06-05 12:00 |
18:40:51.59 |
-13:22:00.6 |
HIP 91608 |
1.56 |
| 2026-06-06 00:00 |
18:40:48.31 |
-13:22:01.4 |
HIP 91597 |
2.01 |
| 2026-06-06 12:00 |
18:40:45.02 |
-13:22:02.3 |
HIP 91597 |
2.08 |
| 2026-06-07 00:00 |
18:40:41.71 |
-13:22:03.4 |
HIP 91597 |
2.44 |
| 2026-06-07 12:00 |
18:40:38.40 |
-13:22:04.4 |
HIP 91597 |
2.97 |
| 2026-06-08 00:00 |
18:40:35.07 |
-13:22:05.6 |
HIP 91597 |
3.62 |
| 2026-06-08 12:00 |
18:40:31.73 |
-13:22:06.8 |
HIP 91597 |
4.32 |
| 2026-06-09 00:00 |
18:40:28.39 |
-13:22:08.1 |
HIP 91597 |
5.06 |
| 2026-06-09 12:00 |
18:40:25.03 |
-13:22:09.5 |
HIP 91597 |
5.82 |
| 2026-06-10 00:00 |
18:40:21.66 |
-13:22:10.9 |
HIP 91597 |
6.60 |
| 2026-06-10 12:00 |
18:40:18.28 |
-13:22:12.4 |
HIP 91597 |
7.38 |
| 2026-06-11 00:00 |
18:40:14.89 |
-13:22:14.0 |
HIP 91597 |
8.18 |
| 2026-06-11 12:00 |
18:40:11.49 |
-13:22:15.6 |
HIP 91597 |
8.99 |
| 2026-06-12 00:00 |
18:40:08.08 |
-13:22:17.4 |
HIP 91597 |
9.80 |
| 2026-06-12 12:00 |
18:40:04.66 |
-13:22:19.2 |
HIP 91597 |
10.62 |
| 2026-06-13 00:00 |
18:40:01.23 |
-13:22:21.0 |
HIP 91597 |
11.44 |
| 2026-06-13 12:00 |
18:39:57.80 |
-13:22:23.0 |
HIP 91597 |
12.27 |
| 2026-06-14 00:00 |
18:39:54.35 |
-13:22:25.0 |
HIP 91597 |
13.10 |
| 2026-06-14 12:00 |
18:39:50.90 |
-13:22:27.1 |
HIP 91597 |
13.93 |
| 2026-06-15 00:00 |
18:39:47.44 |
-13:22:29.3 |
HIP 91597 |
14.76 |
| 2026-06-15 12:00 |
18:39:43.97 |
-13:22:31.5 |
HIP 91597 |
15.60 |
| 2026-06-16 00:00 |
18:39:40.49 |
-13:22:33.8 |
HIP 91597 |
16.44 |
| 2026-06-16 12:00 |
18:39:37.01 |
-13:22:36.2 |
HIP 91597 |
17.29 |
| 2026-06-17 00:00 |
18:39:33.52 |
-13:22:38.6 |
HIP 91597 |
18.13 |
| 2026-06-17 12:00 |
18:39:30.02 |
-13:22:41.1 |
HIP 91597 |
18.98 |
| 2026-06-18 00:00 |
18:39:26.52 |
-13:22:43.7 |
HIP 91597 |
19.83 |
| 2026-06-18 12:00 |
18:39:23.01 |
-13:22:46.4 |
HIP 91597 |
20.68 |
| 2026-06-19 00:00 |
18:39:19.50 |
-13:22:49.1 |
HIP 91349 |
21.20 |
| 2026-06-19 12:00 |
18:39:15.98 |
-13:22:51.9 |
HIP 91349 |
20.36 |
| 2026-06-20 00:00 |
18:39:12.45 |
-13:22:54.8 |
HIP 91349 |
19.52 |
| 2026-06-20 12:00 |
18:39:08.92 |
-13:22:57.7 |
HIP 91349 |
18.68 |
| 2026-06-21 00:00 |
18:39:05.38 |
-13:23:00.8 |
HIP 91349 |
17.85 |
| 2026-06-21 12:00 |
18:39:01.84 |
-13:23:03.8 |
HIP 91349 |
17.01 |
| 2026-06-22 00:00 |
18:38:58.30 |
-13:23:07.0 |
HIP 91349 |
16.18 |