メタデータ
| 項目 |
値 |
| Designation |
C/1984 V1 (Levy-Rudenko) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1984-12-14T06:08:07.969920Z |
| Orbit solution date (soln_date, UTC) |
2022-04-11T23:22:27Z |
| Obs used |
162 |
| NEO |
- |
| M1 |
9.500 |
| K1 |
23.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1985-01-06.0000000 |
| e |
0.99921104 |
| q (au) |
0.917948 |
| a (au) |
1163.486000 |
| i (deg) |
65.714614 |
| Ω (om, deg) |
331.167739 |
| ω (w, deg) |
82.736865 |
| M (ma, deg) |
0.000565 |
等級
散乱 + 全体線形
$$
M_a = (8.012 + 3.636\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.012 |
| n |
3.636 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 1984-11-15 |
1984-12-14 |
+10.1838 |
+0.326 |
| 1984-12-14 |
1985-02-19 |
-0.0916 |
-0.071 |
| 1985-02-19 |
1985-04-10 |
+14.5027 |
-2.757 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
10:39:56.19 |
-57:26:48.1 |
HIP 52182 |
2.74 |
| 2026-09-20 12:00 |
10:39:59.06 |
-57:27:00.5 |
HIP 52182 |
3.06 |
| 2026-09-21 00:00 |
10:40:01.92 |
-57:27:13.2 |
HIP 52182 |
3.40 |
| 2026-09-21 12:00 |
10:40:04.77 |
-57:27:26.0 |
HIP 52182 |
3.76 |
| 2026-09-22 00:00 |
10:40:07.61 |
-57:27:38.9 |
HIP 52182 |
4.13 |
| 2026-09-22 12:00 |
10:40:10.44 |
-57:27:52.1 |
HIP 52182 |
4.52 |
| 2026-09-23 00:00 |
10:40:13.26 |
-57:28:05.4 |
HIP 52182 |
4.91 |
| 2026-09-23 12:00 |
10:40:16.08 |
-57:28:18.9 |
HIP 52182 |
5.31 |
| 2026-09-24 00:00 |
10:40:18.88 |
-57:28:32.6 |
HIP 52182 |
5.71 |
| 2026-09-24 12:00 |
10:40:21.68 |
-57:28:46.4 |
HIP 52182 |
6.12 |
| 2026-09-25 00:00 |
10:40:24.46 |
-57:29:00.4 |
HIP 52182 |
6.53 |
| 2026-09-25 12:00 |
10:40:27.24 |
-57:29:14.6 |
HIP 52182 |
6.95 |
| 2026-09-26 00:00 |
10:40:30.00 |
-57:29:29.0 |
HIP 52182 |
7.37 |
| 2026-09-26 12:00 |
10:40:32.76 |
-57:29:43.5 |
HIP 52182 |
7.78 |
| 2026-09-27 00:00 |
10:40:35.50 |
-57:29:58.2 |
HIP 52182 |
8.21 |
| 2026-09-27 12:00 |
10:40:38.24 |
-57:30:13.0 |
HIP 52182 |
8.63 |
| 2026-09-28 00:00 |
10:40:40.96 |
-57:30:28.1 |
HIP 52182 |
9.05 |
| 2026-09-28 12:00 |
10:40:43.68 |
-57:30:43.2 |
HIP 52182 |
9.48 |
| 2026-09-29 00:00 |
10:40:46.38 |
-57:30:58.6 |
HIP 52182 |
9.90 |
| 2026-09-29 12:00 |
10:40:49.07 |
-57:31:14.1 |
HIP 52182 |
10.33 |
| 2026-09-30 00:00 |
10:40:51.75 |
-57:31:29.8 |
HIP 52182 |
10.76 |
| 2026-09-30 12:00 |
10:40:54.41 |
-57:31:45.6 |
HIP 52182 |
11.19 |
| 2026-10-01 00:00 |
10:40:57.07 |
-57:32:01.6 |
HIP 52182 |
11.62 |
| 2026-10-01 12:00 |
10:40:59.71 |
-57:32:17.8 |
HIP 52182 |
12.05 |
| 2026-10-02 00:00 |
10:41:02.35 |
-57:32:34.1 |
HIP 52182 |
12.48 |
| 2026-10-02 12:00 |
10:41:04.96 |
-57:32:50.6 |
HIP 52182 |
12.91 |
| 2026-10-03 00:00 |
10:41:07.57 |
-57:33:07.3 |
HIP 52182 |
13.34 |
| 2026-10-03 12:00 |
10:41:10.16 |
-57:33:24.1 |
HIP 52182 |
13.77 |
| 2026-10-04 00:00 |
10:41:12.75 |
-57:33:41.0 |
HIP 52182 |
14.21 |
| 2026-10-04 12:00 |
10:41:15.31 |
-57:33:58.1 |
HIP 52182 |
14.64 |
| 2026-10-05 00:00 |
10:41:17.87 |
-57:34:15.4 |
HIP 52182 |
15.07 |
| 2026-10-05 12:00 |
10:41:20.41 |
-57:34:32.8 |
HIP 52182 |
15.50 |
| 2026-10-06 00:00 |
10:41:22.93 |
-57:34:50.4 |
HIP 52182 |
15.94 |
| 2026-10-06 12:00 |
10:41:25.45 |
-57:35:08.1 |
HIP 52182 |
16.37 |
| 2026-10-07 00:00 |
10:41:27.95 |
-57:35:26.0 |
HIP 52182 |
16.81 |
| 2026-10-07 12:00 |
10:41:30.43 |
-57:35:44.0 |
HIP 52182 |
17.24 |
| 2026-10-08 00:00 |
10:41:32.90 |
-57:36:02.1 |
HIP 52182 |
17.67 |
| 2026-10-08 12:00 |
10:41:35.36 |
-57:36:20.5 |
HIP 52182 |
18.11 |
| 2026-10-09 00:00 |
10:41:37.80 |
-57:36:38.9 |
HIP 52182 |
18.54 |
| 2026-10-09 12:00 |
10:41:40.22 |
-57:36:57.5 |
HIP 52182 |
18.98 |
| 2026-10-10 00:00 |
10:41:42.63 |
-57:37:16.3 |
HIP 52182 |
19.41 |
| 2026-10-10 12:00 |
10:41:45.02 |
-57:37:35.1 |
HIP 52274 |
19.80 |
| 2026-10-11 00:00 |
10:41:47.40 |
-57:37:54.2 |
HIP 52274 |
19.62 |