メタデータ
| 項目 |
値 |
| Designation |
C/2007 W3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-06-02T19:04:58.730880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:15Z |
| Obs used |
206 |
| NEO |
- |
| M1 |
15.300 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2008-02-28.0000000 |
| e |
1.00016327 |
| q (au) |
1.776638 |
| a (au) |
-10881.860403 |
| i (deg) |
78.673550 |
| Ω (om, deg) |
73.069451 |
| ω (w, deg) |
112.625589 |
| M (ma, deg) |
-0.000083 |
等級
散乱 + 全体線形
$$
M_a = (16.097 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.097 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.577 |
| 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 |
03:43:34.62 |
-69:08:54.8 |
HIP 17633 |
24.32 |
| 2026-03-26 12:00 |
03:43:39.99 |
-69:08:13.4 |
HIP 17633 |
24.52 |
| 2026-03-27 00:00 |
03:43:45.42 |
-69:07:32.3 |
HIP 17633 |
24.74 |
| 2026-03-27 12:00 |
03:43:50.89 |
-69:06:51.4 |
HIP 17633 |
24.98 |
| 2026-03-28 00:00 |
03:43:56.42 |
-69:06:10.8 |
HIP 17633 |
25.24 |
| 2026-03-28 12:00 |
03:44:02.01 |
-69:05:30.4 |
HIP 17633 |
25.52 |
| 2026-03-29 00:00 |
03:44:07.64 |
-69:04:50.3 |
HIP 17633 |
25.81 |
| 2026-03-29 12:00 |
03:44:13.33 |
-69:04:10.4 |
HIP 17633 |
26.12 |
| 2026-03-30 00:00 |
03:44:19.07 |
-69:03:30.8 |
HIP 17633 |
26.45 |
| 2026-03-30 12:00 |
03:44:24.86 |
-69:02:51.5 |
HIP 17633 |
26.79 |
| 2026-03-31 00:00 |
03:44:30.70 |
-69:02:12.4 |
HIP 17633 |
27.15 |
| 2026-03-31 12:00 |
03:44:36.59 |
-69:01:33.6 |
HIP 17633 |
27.53 |
| 2026-04-01 00:00 |
03:44:42.53 |
-69:00:55.0 |
HIP 17633 |
27.91 |
| 2026-04-01 12:00 |
03:44:48.52 |
-69:00:16.7 |
HIP 17633 |
28.31 |
| 2026-04-02 00:00 |
03:44:54.56 |
-68:59:38.7 |
HIP 17633 |
28.73 |
| 2026-04-02 12:00 |
03:45:00.65 |
-68:59:00.9 |
HIP 17633 |
29.15 |
| 2026-04-03 00:00 |
03:45:06.78 |
-68:58:23.4 |
HIP 17964 |
29.21 |
| 2026-04-03 12:00 |
03:45:12.97 |
-68:57:46.2 |
HIP 17964 |
28.82 |
| 2026-04-04 00:00 |
03:45:19.20 |
-68:57:09.3 |
HIP 17964 |
28.44 |
| 2026-04-04 12:00 |
03:45:25.47 |
-68:56:32.6 |
HIP 17964 |
28.08 |
| 2026-04-05 00:00 |
03:45:31.79 |
-68:55:56.3 |
HIP 17964 |
27.73 |
| 2026-04-05 12:00 |
03:45:38.16 |
-68:55:20.2 |
HIP 17964 |
27.39 |
| 2026-04-06 00:00 |
03:45:44.57 |
-68:54:44.4 |
HIP 17964 |
27.07 |
| 2026-04-06 12:00 |
03:45:51.03 |
-68:54:08.8 |
HIP 17964 |
26.77 |
| 2026-04-07 00:00 |
03:45:57.53 |
-68:53:33.6 |
HIP 17964 |
26.48 |
| 2026-04-07 12:00 |
03:46:04.08 |
-68:52:58.7 |
HIP 17964 |
26.21 |
| 2026-04-08 00:00 |
03:46:10.67 |
-68:52:24.0 |
HIP 17964 |
25.96 |
| 2026-04-08 12:00 |
03:46:17.30 |
-68:51:49.7 |
HIP 17964 |
25.73 |
| 2026-04-09 00:00 |
03:46:23.98 |
-68:51:15.6 |
HIP 17964 |
25.51 |
| 2026-04-09 12:00 |
03:46:30.70 |
-68:50:41.8 |
HIP 17964 |
25.31 |
| 2026-04-10 00:00 |
03:46:37.46 |
-68:50:08.4 |
HIP 17964 |
25.13 |
| 2026-04-10 12:00 |
03:46:44.26 |
-68:49:35.2 |
HIP 17964 |
24.97 |
| 2026-04-11 00:00 |
03:46:51.10 |
-68:49:02.4 |
HIP 17964 |
24.83 |
| 2026-04-11 12:00 |
03:46:57.98 |
-68:48:29.8 |
HIP 17964 |
24.71 |
| 2026-04-12 00:00 |
03:47:04.91 |
-68:47:57.6 |
HIP 17964 |
24.61 |
| 2026-04-12 12:00 |
03:47:11.87 |
-68:47:25.7 |
HIP 17964 |
24.53 |
| 2026-04-13 00:00 |
03:47:18.87 |
-68:46:54.0 |
HIP 17964 |
24.48 |
| 2026-04-13 12:00 |
03:47:25.91 |
-68:46:22.7 |
HIP 17964 |
24.44 |
| 2026-04-14 00:00 |
03:47:32.99 |
-68:45:51.7 |
HIP 17964 |
24.42 |
| 2026-04-14 12:00 |
03:47:40.10 |
-68:45:21.1 |
HIP 17964 |
24.43 |
| 2026-04-15 00:00 |
03:47:47.25 |
-68:44:50.7 |
HIP 17964 |
24.45 |
| 2026-04-15 12:00 |
03:47:54.44 |
-68:44:20.7 |
HIP 17964 |
24.50 |
| 2026-04-16 00:00 |
03:48:01.67 |
-68:43:51.0 |
HIP 17964 |
24.56 |