メタデータ
| 項目 |
値 |
| Designation |
C/1943 W1 (van Gent-Peltier-Daimaca) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1944-01-12T06:19:17.172480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:07Z |
| Obs used |
12 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1943-12-03.0000000 |
| e |
0.99951300 |
| q (au) |
0.874252 |
| a (au) |
1795.167782 |
| i (deg) |
136.183297 |
| Ω (om, deg) |
58.630122 |
| ω (w, deg) |
33.091602 |
| M (ma, deg) |
359.999478 |
等級
散乱 + 全体線形
$$
M_a = (9.549 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.549 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.996 |
| 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) |
| 2026-09-20 00:00 |
14:13:08.47 |
-29:52:43.3 |
HIP 69377 |
15.71 |
| 2026-09-20 12:00 |
14:13:09.42 |
-29:52:44.8 |
HIP 69377 |
15.89 |
| 2026-09-21 00:00 |
14:13:10.38 |
-29:52:46.2 |
HIP 69377 |
16.07 |
| 2026-09-21 12:00 |
14:13:11.35 |
-29:52:47.7 |
HIP 69377 |
16.26 |
| 2026-09-22 00:00 |
14:13:12.32 |
-29:52:49.3 |
HIP 69377 |
16.45 |
| 2026-09-22 12:00 |
14:13:13.29 |
-29:52:51.0 |
HIP 69377 |
16.64 |
| 2026-09-23 00:00 |
14:13:14.28 |
-29:52:52.7 |
HIP 69377 |
16.84 |
| 2026-09-23 12:00 |
14:13:15.27 |
-29:52:54.5 |
HIP 69377 |
17.03 |
| 2026-09-24 00:00 |
14:13:16.26 |
-29:52:56.3 |
HIP 69377 |
17.23 |
| 2026-09-24 12:00 |
14:13:17.27 |
-29:52:58.2 |
HIP 69377 |
17.43 |
| 2026-09-25 00:00 |
14:13:18.27 |
-29:53:00.1 |
HIP 69377 |
17.63 |
| 2026-09-25 12:00 |
14:13:19.29 |
-29:53:02.1 |
HIP 69377 |
17.84 |
| 2026-09-26 00:00 |
14:13:20.30 |
-29:53:04.2 |
HIP 69377 |
18.04 |
| 2026-09-26 12:00 |
14:13:21.33 |
-29:53:06.3 |
HIP 69377 |
18.25 |
| 2026-09-27 00:00 |
14:13:22.36 |
-29:53:08.5 |
HIP 69377 |
18.46 |
| 2026-09-27 12:00 |
14:13:23.39 |
-29:53:10.7 |
HIP 69377 |
18.68 |
| 2026-09-28 00:00 |
14:13:24.43 |
-29:53:13.0 |
HIP 69377 |
18.89 |
| 2026-09-28 12:00 |
14:13:25.48 |
-29:53:15.3 |
HIP 69377 |
19.10 |
| 2026-09-29 00:00 |
14:13:26.53 |
-29:53:17.7 |
HIP 69377 |
19.32 |
| 2026-09-29 12:00 |
14:13:27.59 |
-29:53:20.2 |
HIP 69377 |
19.54 |
| 2026-09-30 00:00 |
14:13:28.65 |
-29:53:22.7 |
HIP 69377 |
19.76 |
| 2026-09-30 12:00 |
14:13:29.71 |
-29:53:25.3 |
HIP 69377 |
19.99 |
| 2026-10-01 00:00 |
14:13:30.78 |
-29:53:28.0 |
HIP 69377 |
20.21 |
| 2026-10-01 12:00 |
14:13:31.86 |
-29:53:30.7 |
HIP 69377 |
20.44 |
| 2026-10-02 00:00 |
14:13:32.94 |
-29:53:33.4 |
HIP 69560 |
20.63 |
| 2026-10-02 12:00 |
14:13:34.03 |
-29:53:36.2 |
HIP 69560 |
20.48 |
| 2026-10-03 00:00 |
14:13:35.12 |
-29:53:39.1 |
HIP 69560 |
20.32 |
| 2026-10-03 12:00 |
14:13:36.21 |
-29:53:42.0 |
HIP 69560 |
20.17 |
| 2026-10-04 00:00 |
14:13:37.31 |
-29:53:45.0 |
HIP 69560 |
20.01 |
| 2026-10-04 12:00 |
14:13:38.42 |
-29:53:48.0 |
HIP 69560 |
19.86 |
| 2026-10-05 00:00 |
14:13:39.53 |
-29:53:51.1 |
HIP 69560 |
19.70 |
| 2026-10-05 12:00 |
14:13:40.64 |
-29:53:54.3 |
HIP 69560 |
19.55 |
| 2026-10-06 00:00 |
14:13:41.76 |
-29:53:57.5 |
HIP 69560 |
19.40 |
| 2026-10-06 12:00 |
14:13:42.88 |
-29:54:00.7 |
HIP 69560 |
19.24 |
| 2026-10-07 00:00 |
14:13:44.00 |
-29:54:04.1 |
HIP 69560 |
19.09 |
| 2026-10-07 12:00 |
14:13:45.13 |
-29:54:07.4 |
HIP 69560 |
18.94 |
| 2026-10-08 00:00 |
14:13:46.26 |
-29:54:10.9 |
HIP 69560 |
18.79 |
| 2026-10-08 12:00 |
14:13:47.40 |
-29:54:14.3 |
HIP 69560 |
18.64 |
| 2026-10-09 00:00 |
14:13:48.54 |
-29:54:17.9 |
HIP 69560 |
18.50 |
| 2026-10-09 12:00 |
14:13:49.69 |
-29:54:21.5 |
HIP 69560 |
18.35 |
| 2026-10-10 00:00 |
14:13:50.83 |
-29:54:25.1 |
HIP 69560 |
18.21 |
| 2026-10-10 12:00 |
14:13:51.99 |
-29:54:28.8 |
HIP 69560 |
18.06 |
| 2026-10-11 00:00 |
14:13:53.14 |
-29:54:32.5 |
HIP 69560 |
17.92 |