メタデータ
| 項目 |
値 |
| Designation |
C/1952 Q1 (Harrington) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1953-01-05T10:10:01.139520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:10Z |
| Obs used |
5 |
| 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) |
1952-11-27.0000000 |
| e |
0.99595292 |
| q (au) |
1.664987 |
| a (au) |
411.404751 |
| i (deg) |
59.116673 |
| Ω (om, deg) |
221.391261 |
| ω (w, deg) |
191.629595 |
| M (ma, deg) |
359.995344 |
等級
散乱 + 全体線形
$$
M_a = (6.130 + 3.003\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.130 |
| n |
3.003 |
| 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 |
| 1952-10-10 |
1952-12-20 |
+24.3360 |
-5.080 |
| 1953-01-05 |
1953-05-08 |
+0.2446 |
-1.035 |
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 |
14:26:10.89 |
-16:46:14.4 |
HIP 70554 |
28.48 |
| 2026-09-20 12:00 |
14:26:11.84 |
-16:46:18.1 |
HIP 70554 |
28.57 |
| 2026-09-21 00:00 |
14:26:12.80 |
-16:46:22.0 |
HIP 70554 |
28.66 |
| 2026-09-21 12:00 |
14:26:13.76 |
-16:46:25.8 |
HIP 70554 |
28.75 |
| 2026-09-22 00:00 |
14:26:14.73 |
-16:46:29.7 |
HIP 70554 |
28.85 |
| 2026-09-22 12:00 |
14:26:15.70 |
-16:46:33.6 |
HIP 70554 |
28.95 |
| 2026-09-23 00:00 |
14:26:16.69 |
-16:46:37.5 |
HIP 70554 |
29.05 |
| 2026-09-23 12:00 |
14:26:17.67 |
-16:46:41.5 |
HIP 70554 |
29.15 |
| 2026-09-24 00:00 |
14:26:18.67 |
-16:46:45.6 |
HIP 70554 |
29.26 |
| 2026-09-24 12:00 |
14:26:19.67 |
-16:46:49.6 |
HIP 70554 |
29.37 |
| 2026-09-25 00:00 |
14:26:20.68 |
-16:46:53.7 |
HIP 70554 |
29.48 |
| 2026-09-25 12:00 |
14:26:21.69 |
-16:46:57.9 |
HIP 70554 |
29.60 |
| 2026-09-26 00:00 |
14:26:22.71 |
-16:47:02.0 |
HIP 70554 |
29.72 |
| 2026-09-26 12:00 |
14:26:23.74 |
-16:47:06.2 |
HIP 70554 |
29.84 |
| 2026-09-27 00:00 |
14:26:24.77 |
-16:47:10.5 |
HIP 70554 |
29.96 |
| 2026-09-27 12:00 |
14:26:25.81 |
-16:47:14.7 |
HIP 70554 |
30.08 |
| 2026-09-28 00:00 |
14:26:26.85 |
-16:47:19.0 |
HIP 70554 |
30.21 |
| 2026-09-28 12:00 |
14:26:27.90 |
-16:47:23.4 |
HIP 70554 |
30.34 |
| 2026-09-29 00:00 |
14:26:28.96 |
-16:47:27.7 |
HIP 70554 |
30.47 |
| 2026-09-29 12:00 |
14:26:30.02 |
-16:47:32.1 |
HIP 70554 |
30.61 |
| 2026-09-30 00:00 |
14:26:31.08 |
-16:47:36.6 |
HIP 70554 |
30.75 |
| 2026-09-30 12:00 |
14:26:32.16 |
-16:47:41.0 |
HIP 70554 |
30.89 |
| 2026-10-01 00:00 |
14:26:33.24 |
-16:47:45.5 |
HIP 70554 |
31.03 |
| 2026-10-01 12:00 |
14:26:34.32 |
-16:47:50.1 |
HIP 70554 |
31.18 |
| 2026-10-02 00:00 |
14:26:35.41 |
-16:47:54.6 |
HIP 70554 |
31.33 |
| 2026-10-02 12:00 |
14:26:36.50 |
-16:47:59.2 |
HIP 70554 |
31.48 |
| 2026-10-03 00:00 |
14:26:37.60 |
-16:48:03.8 |
HIP 70795 |
31.25 |
| 2026-10-03 12:00 |
14:26:38.71 |
-16:48:08.5 |
HIP 70795 |
30.98 |
| 2026-10-04 00:00 |
14:26:39.82 |
-16:48:13.2 |
HIP 70795 |
30.70 |
| 2026-10-04 12:00 |
14:26:40.93 |
-16:48:17.9 |
HIP 70795 |
30.42 |
| 2026-10-05 00:00 |
14:26:42.05 |
-16:48:22.6 |
HIP 70795 |
30.14 |
| 2026-10-05 12:00 |
14:26:43.18 |
-16:48:27.4 |
HIP 70795 |
29.86 |
| 2026-10-06 00:00 |
14:26:44.30 |
-16:48:32.2 |
HIP 70795 |
29.58 |
| 2026-10-06 12:00 |
14:26:45.44 |
-16:48:37.0 |
HIP 70795 |
29.30 |
| 2026-10-07 00:00 |
14:26:46.58 |
-16:48:41.9 |
HIP 70795 |
29.01 |
| 2026-10-07 12:00 |
14:26:47.72 |
-16:48:46.8 |
HIP 70795 |
28.73 |
| 2026-10-08 00:00 |
14:26:48.87 |
-16:48:51.7 |
HIP 70795 |
28.44 |
| 2026-10-08 12:00 |
14:26:50.02 |
-16:48:56.6 |
HIP 70795 |
28.15 |
| 2026-10-09 00:00 |
14:26:51.18 |
-16:49:01.6 |
HIP 70795 |
27.86 |
| 2026-10-09 12:00 |
14:26:52.34 |
-16:49:06.6 |
HIP 70795 |
27.57 |
| 2026-10-10 00:00 |
14:26:53.50 |
-16:49:11.6 |
HIP 70795 |
27.28 |
| 2026-10-10 12:00 |
14:26:54.67 |
-16:49:16.6 |
HIP 70795 |
26.99 |
| 2026-10-11 00:00 |
14:26:55.85 |
-16:49:21.7 |
HIP 70795 |
26.70 |