メタデータ
| 項目 |
値 |
| Designation |
83D/Russell 1 |
| Type |
D |
| Perihelion (tp_cal, UTC) |
1985-07-05T05:29:58.032960Z |
| Orbit solution date (soln_date, UTC) |
2002-03-14T16:28:09Z |
| Obs used |
20 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
15.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1985-06-24.0000000 |
| e |
0.51720991 |
| q (au) |
1.611542 |
| a (au) |
3.337976 |
| i (deg) |
22.659459 |
| Ω (om, deg) |
230.842006 |
| ω (w, deg) |
0.376229 |
| M (ma, deg) |
358.185212 |
等級
散乱 + 全体線形
$$
M_a = (11.812 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.812 |
| n |
6.000 |
| gf |
0.999 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
04:02:55.36 |
+18:58:55.2 |
HIP 18820 |
17.70 |
| 2026-07-29 12:00 |
04:03:14.22 |
+18:59:03.4 |
HIP 18909 |
18.95 |
| 2026-07-30 00:00 |
04:03:32.97 |
+18:59:10.9 |
HIP 18909 |
19.80 |
| 2026-07-30 12:00 |
04:03:51.61 |
+18:59:17.9 |
HIP 18909 |
21.53 |
| 2026-07-31 00:00 |
04:04:10.13 |
+18:59:24.2 |
HIP 18909 |
23.93 |
| 2026-07-31 12:00 |
04:04:28.54 |
+18:59:29.9 |
HIP 18909 |
26.81 |
| 2026-08-01 00:00 |
04:04:46.84 |
+18:59:35.0 |
HIP 19175 |
27.82 |
| 2026-08-01 12:00 |
04:05:05.02 |
+18:59:39.5 |
HIP 19175 |
23.80 |
| 2026-08-02 00:00 |
04:05:23.08 |
+18:59:43.4 |
HIP 19175 |
19.93 |
| 2026-08-02 12:00 |
04:05:41.03 |
+18:59:46.7 |
HIP 19175 |
16.29 |
| 2026-08-03 00:00 |
04:05:58.85 |
+18:59:49.3 |
HIP 19175 |
13.04 |
| 2026-08-03 12:00 |
04:06:16.56 |
+18:59:51.4 |
HIP 19175 |
10.53 |
| 2026-08-04 00:00 |
04:06:34.15 |
+18:59:52.8 |
HIP 19175 |
9.32 |
| 2026-08-04 12:00 |
04:06:51.61 |
+18:59:53.6 |
HIP 19175 |
9.86 |
| 2026-08-05 00:00 |
04:07:08.95 |
+18:59:53.7 |
HIP 19175 |
11.90 |
| 2026-08-05 12:00 |
04:07:26.16 |
+18:59:53.3 |
HIP 19175 |
14.80 |
| 2026-08-06 00:00 |
04:07:43.25 |
+18:59:52.2 |
HIP 19175 |
18.13 |
| 2026-08-06 12:00 |
04:08:00.22 |
+18:59:50.4 |
HIP 19403 |
20.22 |
| 2026-08-07 00:00 |
04:08:17.05 |
+18:59:48.1 |
HIP 19403 |
16.41 |
| 2026-08-07 12:00 |
04:08:33.76 |
+18:59:45.1 |
HIP 19403 |
12.72 |
| 2026-08-08 00:00 |
04:08:50.33 |
+18:59:41.4 |
HIP 19403 |
9.28 |
| 2026-08-08 12:00 |
04:09:06.78 |
+18:59:37.2 |
HIP 19403 |
6.42 |
| 2026-08-09 00:00 |
04:09:23.09 |
+18:59:32.2 |
HIP 19403 |
5.13 |
| 2026-08-09 12:00 |
04:09:39.26 |
+18:59:26.7 |
HIP 19403 |
6.40 |
| 2026-08-10 00:00 |
04:09:55.30 |
+18:59:20.5 |
HIP 19403 |
9.17 |
| 2026-08-10 12:00 |
04:10:11.21 |
+18:59:13.7 |
HIP 19403 |
12.47 |
| 2026-08-11 00:00 |
04:10:26.97 |
+18:59:06.2 |
HIP 19403 |
15.93 |
| 2026-08-11 12:00 |
04:10:42.60 |
+18:58:58.0 |
HIP 19403 |
19.46 |
| 2026-08-12 00:00 |
04:10:58.09 |
+18:58:49.2 |
HIP 19403 |
23.01 |
| 2026-08-12 12:00 |
04:11:13.43 |
+18:58:39.8 |
HIP 19403 |
26.55 |
| 2026-08-13 00:00 |
04:11:28.64 |
+18:58:29.7 |
HIP 19403 |
30.08 |
| 2026-08-13 12:00 |
04:11:43.70 |
+18:58:19.0 |
HIP 19403 |
33.59 |
| 2026-08-14 00:00 |
04:11:58.61 |
+18:58:07.6 |
HIP 19763 |
32.55 |
| 2026-08-14 12:00 |
04:12:13.38 |
+18:57:55.6 |
HIP 19763 |
29.07 |
| 2026-08-15 00:00 |
04:12:28.00 |
+18:57:42.9 |
HIP 19763 |
25.62 |
| 2026-08-15 12:00 |
04:12:42.48 |
+18:57:29.5 |
HIP 19763 |
22.20 |
| 2026-08-16 00:00 |
04:12:56.80 |
+18:57:15.5 |
HIP 19763 |
18.83 |
| 2026-08-16 12:00 |
04:13:10.98 |
+18:57:00.8 |
HIP 19763 |
15.50 |
| 2026-08-17 00:00 |
04:13:25.00 |
+18:56:45.5 |
HIP 19763 |
12.22 |
| 2026-08-17 12:00 |
04:13:38.87 |
+18:56:29.5 |
HIP 19763 |
9.00 |
| 2026-08-18 00:00 |
04:13:52.59 |
+18:56:12.9 |
HIP 19763 |
5.88 |
| 2026-08-18 12:00 |
04:14:06.15 |
+18:55:55.6 |
HIP 19763 |
3.09 |
| 2026-08-19 00:00 |
04:14:19.56 |
+18:55:37.6 |
HIP 19763 |
2.26 |