メタデータ
| 項目 |
値 |
| Designation |
C/1996 R3 (Lagerkvist) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1995-07-24T19:24:20.646720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:50Z |
| Obs used |
11 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1996-09-25.0000000 |
| e |
0.98703434 |
| q (au) |
5.238237 |
| a (au) |
404.008511 |
| i (deg) |
39.201397 |
| Ω (om, deg) |
172.724584 |
| ω (w, deg) |
130.933238 |
| M (ma, deg) |
0.051970 |
等級
散乱 + 全体線形
$$
M_a = (10.448 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.448 |
| n |
2.000 |
| gf |
0.968 |
| gb |
-0.667 |
| k |
1.000 |
| δ90 |
9.960 |
| 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 |
05:57:48.39 |
-15:00:27.6 |
HIP 28211 |
24.00 |
| 2026-07-29 12:00 |
05:57:50.46 |
-15:00:40.3 |
HIP 28211 |
23.84 |
| 2026-07-30 00:00 |
05:57:52.52 |
-15:00:53.1 |
HIP 28211 |
23.69 |
| 2026-07-30 12:00 |
05:57:54.57 |
-15:01:06.1 |
HIP 28211 |
23.55 |
| 2026-07-31 00:00 |
05:57:56.61 |
-15:01:19.2 |
HIP 28211 |
23.41 |
| 2026-07-31 12:00 |
05:57:58.63 |
-15:01:32.5 |
HIP 28211 |
23.29 |
| 2026-08-01 00:00 |
05:58:00.65 |
-15:01:45.9 |
HIP 28211 |
23.17 |
| 2026-08-01 12:00 |
05:58:02.65 |
-15:01:59.4 |
HIP 28211 |
23.06 |
| 2026-08-02 00:00 |
05:58:04.64 |
-15:02:13.1 |
HIP 28211 |
22.96 |
| 2026-08-02 12:00 |
05:58:06.61 |
-15:02:27.0 |
HIP 28211 |
22.87 |
| 2026-08-03 00:00 |
05:58:08.57 |
-15:02:40.9 |
HIP 28211 |
22.79 |
| 2026-08-03 12:00 |
05:58:10.52 |
-15:02:55.1 |
HIP 28211 |
22.71 |
| 2026-08-04 00:00 |
05:58:12.46 |
-15:03:09.3 |
HIP 28211 |
22.65 |
| 2026-08-04 12:00 |
05:58:14.38 |
-15:03:23.7 |
HIP 28211 |
22.59 |
| 2026-08-05 00:00 |
05:58:16.29 |
-15:03:38.2 |
HIP 28211 |
22.54 |
| 2026-08-05 12:00 |
05:58:18.19 |
-15:03:52.9 |
HIP 28211 |
22.50 |
| 2026-08-06 00:00 |
05:58:20.07 |
-15:04:07.7 |
HIP 28211 |
22.47 |
| 2026-08-06 12:00 |
05:58:21.94 |
-15:04:22.7 |
HIP 28211 |
22.45 |
| 2026-08-07 00:00 |
05:58:23.80 |
-15:04:37.7 |
HIP 28211 |
22.44 |
| 2026-08-07 12:00 |
05:58:25.64 |
-15:04:52.9 |
HIP 28211 |
22.43 |
| 2026-08-08 00:00 |
05:58:27.47 |
-15:05:08.3 |
HIP 28211 |
22.43 |
| 2026-08-08 12:00 |
05:58:29.28 |
-15:05:23.7 |
HIP 28211 |
22.44 |
| 2026-08-09 00:00 |
05:58:31.08 |
-15:05:39.4 |
HIP 28211 |
22.46 |
| 2026-08-09 12:00 |
05:58:32.87 |
-15:05:55.1 |
HIP 28211 |
22.49 |
| 2026-08-10 00:00 |
05:58:34.64 |
-15:06:10.9 |
HIP 28211 |
22.52 |
| 2026-08-10 12:00 |
05:58:36.39 |
-15:06:26.9 |
HIP 28211 |
22.56 |
| 2026-08-11 00:00 |
05:58:38.14 |
-15:06:43.0 |
HIP 28211 |
22.61 |
| 2026-08-11 12:00 |
05:58:39.86 |
-15:06:59.3 |
HIP 28211 |
22.66 |
| 2026-08-12 00:00 |
05:58:41.57 |
-15:07:15.7 |
HIP 28211 |
22.72 |
| 2026-08-12 12:00 |
05:58:43.27 |
-15:07:32.1 |
HIP 28211 |
22.79 |
| 2026-08-13 00:00 |
05:58:44.95 |
-15:07:48.7 |
HIP 28211 |
22.86 |
| 2026-08-13 12:00 |
05:58:46.61 |
-15:08:05.5 |
HIP 28211 |
22.94 |
| 2026-08-14 00:00 |
05:58:48.26 |
-15:08:22.3 |
HIP 28211 |
23.03 |
| 2026-08-14 12:00 |
05:58:49.90 |
-15:08:39.3 |
HIP 28211 |
23.12 |
| 2026-08-15 00:00 |
05:58:51.51 |
-15:08:56.4 |
HIP 28211 |
23.22 |
| 2026-08-15 12:00 |
05:58:53.11 |
-15:09:13.6 |
HIP 28211 |
23.32 |
| 2026-08-16 00:00 |
05:58:54.70 |
-15:09:30.9 |
HIP 28211 |
23.43 |
| 2026-08-16 12:00 |
05:58:56.27 |
-15:09:48.3 |
HIP 28211 |
23.54 |
| 2026-08-17 00:00 |
05:58:57.82 |
-15:10:05.9 |
HIP 28211 |
23.66 |
| 2026-08-17 12:00 |
05:58:59.36 |
-15:10:23.5 |
HIP 28211 |
23.78 |
| 2026-08-18 00:00 |
05:59:00.88 |
-15:10:41.3 |
HIP 28211 |
23.91 |
| 2026-08-18 12:00 |
05:59:02.38 |
-15:10:59.1 |
HIP 28211 |
24.04 |
| 2026-08-19 00:00 |
05:59:03.87 |
-15:11:17.1 |
HIP 28211 |
24.17 |