メタデータ
| 項目 |
値 |
| Designation |
C/2004 X3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-06-17T04:32:11.241600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:45Z |
| Obs used |
241 |
| NEO |
- |
| M1 |
6.800 |
| K1 |
13.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2005-02-19.0000000 |
| e |
1.00642712 |
| q (au) |
4.402298 |
| a (au) |
-684.956072 |
| i (deg) |
81.076589 |
| Ω (om, deg) |
343.047740 |
| ω (w, deg) |
202.126117 |
| M (ma, deg) |
-0.006498 |
等級
散乱 + 全体線形
$$
M_a = (12.298 + 3.877\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.298 |
| n |
3.877 |
| gf |
0.991 |
| gb |
-0.765 |
| k |
0.800 |
| δ90 |
8.584 |
| 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 |
23:21:07.62 |
-22:59:30.9 |
HIP 115204 |
18.09 |
| 2026-06-01 12:00 |
23:21:08.03 |
-22:59:39.2 |
HIP 115204 |
18.25 |
| 2026-06-02 00:00 |
23:21:08.42 |
-22:59:47.7 |
HIP 115204 |
18.40 |
| 2026-06-02 12:00 |
23:21:08.78 |
-22:59:56.3 |
HIP 115204 |
18.55 |
| 2026-06-03 00:00 |
23:21:09.12 |
-23:00:05.0 |
HIP 115204 |
18.70 |
| 2026-06-03 12:00 |
23:21:09.43 |
-23:00:13.9 |
HIP 115204 |
18.84 |
| 2026-06-04 00:00 |
23:21:09.72 |
-23:00:23.0 |
HIP 115204 |
18.99 |
| 2026-06-04 12:00 |
23:21:09.98 |
-23:00:32.2 |
HIP 115204 |
19.12 |
| 2026-06-05 00:00 |
23:21:10.22 |
-23:00:41.6 |
HIP 115204 |
19.26 |
| 2026-06-05 12:00 |
23:21:10.43 |
-23:00:51.1 |
HIP 115204 |
19.39 |
| 2026-06-06 00:00 |
23:21:10.62 |
-23:01:00.8 |
HIP 115204 |
19.52 |
| 2026-06-06 12:00 |
23:21:10.78 |
-23:01:10.7 |
HIP 115204 |
19.65 |
| 2026-06-07 00:00 |
23:21:10.91 |
-23:01:20.7 |
HIP 115204 |
19.78 |
| 2026-06-07 12:00 |
23:21:11.02 |
-23:01:30.8 |
HIP 115204 |
19.90 |
| 2026-06-08 00:00 |
23:21:11.11 |
-23:01:41.1 |
HIP 115204 |
20.02 |
| 2026-06-08 12:00 |
23:21:11.17 |
-23:01:51.6 |
HIP 115204 |
20.14 |
| 2026-06-09 00:00 |
23:21:11.21 |
-23:02:02.2 |
HIP 115204 |
20.26 |
| 2026-06-09 12:00 |
23:21:11.22 |
-23:02:13.0 |
HIP 115204 |
20.37 |
| 2026-06-10 00:00 |
23:21:11.20 |
-23:02:23.9 |
HIP 115204 |
20.49 |
| 2026-06-10 12:00 |
23:21:11.16 |
-23:02:34.9 |
HIP 115204 |
20.60 |
| 2026-06-11 00:00 |
23:21:11.09 |
-23:02:46.1 |
HIP 115204 |
20.71 |
| 2026-06-11 12:00 |
23:21:11.00 |
-23:02:57.4 |
HIP 115204 |
20.81 |
| 2026-06-12 00:00 |
23:21:10.88 |
-23:03:08.9 |
HIP 115204 |
20.92 |
| 2026-06-12 12:00 |
23:21:10.74 |
-23:03:20.6 |
HIP 115204 |
21.02 |
| 2026-06-13 00:00 |
23:21:10.57 |
-23:03:32.3 |
HIP 115204 |
21.13 |
| 2026-06-13 12:00 |
23:21:10.38 |
-23:03:44.2 |
HIP 115204 |
21.23 |
| 2026-06-14 00:00 |
23:21:10.16 |
-23:03:56.3 |
HIP 115204 |
21.33 |
| 2026-06-14 12:00 |
23:21:09.91 |
-23:04:08.5 |
HIP 115204 |
21.43 |
| 2026-06-15 00:00 |
23:21:09.64 |
-23:04:20.8 |
HIP 115204 |
21.53 |
| 2026-06-15 12:00 |
23:21:09.34 |
-23:04:33.3 |
HIP 115204 |
21.62 |
| 2026-06-16 00:00 |
23:21:09.02 |
-23:04:45.9 |
HIP 115204 |
21.72 |
| 2026-06-16 12:00 |
23:21:08.67 |
-23:04:58.6 |
HIP 115173 |
21.77 |
| 2026-06-17 00:00 |
23:21:08.30 |
-23:05:11.5 |
HIP 115173 |
21.61 |
| 2026-06-17 12:00 |
23:21:07.90 |
-23:05:24.5 |
HIP 115173 |
21.44 |
| 2026-06-18 00:00 |
23:21:07.47 |
-23:05:37.6 |
HIP 115173 |
21.27 |
| 2026-06-18 12:00 |
23:21:07.02 |
-23:05:50.9 |
HIP 115173 |
21.09 |
| 2026-06-19 00:00 |
23:21:06.55 |
-23:06:04.3 |
HIP 115173 |
20.91 |
| 2026-06-19 12:00 |
23:21:06.05 |
-23:06:17.8 |
HIP 115173 |
20.72 |
| 2026-06-20 00:00 |
23:21:05.52 |
-23:06:31.5 |
HIP 115173 |
20.53 |
| 2026-06-20 12:00 |
23:21:04.97 |
-23:06:45.2 |
HIP 115173 |
20.33 |
| 2026-06-21 00:00 |
23:21:04.39 |
-23:06:59.1 |
HIP 115173 |
20.13 |
| 2026-06-21 12:00 |
23:21:03.79 |
-23:07:13.1 |
HIP 115173 |
19.92 |
| 2026-06-22 00:00 |
23:21:03.16 |
-23:07:27.3 |
HIP 115173 |
19.71 |