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 |
-0.998 |
| 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) |
| 2026-05-12 00:00 |
14:27:13.85 |
-16:55:20.7 |
HIP 70795 |
21.15 |
| 2026-05-12 12:00 |
14:27:12.64 |
-16:55:14.4 |
HIP 70795 |
21.45 |
| 2026-05-13 00:00 |
14:27:11.43 |
-16:55:08.0 |
HIP 70795 |
21.75 |
| 2026-05-13 12:00 |
14:27:10.23 |
-16:55:01.7 |
HIP 70795 |
22.05 |
| 2026-05-14 00:00 |
14:27:09.03 |
-16:54:55.4 |
HIP 70795 |
22.35 |
| 2026-05-14 12:00 |
14:27:07.83 |
-16:54:49.2 |
HIP 70795 |
22.64 |
| 2026-05-15 00:00 |
14:27:06.63 |
-16:54:42.9 |
HIP 70795 |
22.94 |
| 2026-05-15 12:00 |
14:27:05.44 |
-16:54:36.6 |
HIP 70795 |
23.24 |
| 2026-05-16 00:00 |
14:27:04.25 |
-16:54:30.3 |
HIP 70795 |
23.54 |
| 2026-05-16 12:00 |
14:27:03.06 |
-16:54:24.0 |
HIP 70795 |
23.83 |
| 2026-05-17 00:00 |
14:27:01.88 |
-16:54:17.8 |
HIP 70795 |
24.13 |
| 2026-05-17 12:00 |
14:27:00.70 |
-16:54:11.5 |
HIP 70795 |
24.42 |
| 2026-05-18 00:00 |
14:26:59.52 |
-16:54:05.3 |
HIP 70795 |
24.72 |
| 2026-05-18 12:00 |
14:26:58.34 |
-16:53:59.1 |
HIP 70795 |
25.01 |
| 2026-05-19 00:00 |
14:26:57.17 |
-16:53:52.8 |
HIP 70795 |
25.30 |
| 2026-05-19 12:00 |
14:26:56.00 |
-16:53:46.6 |
HIP 70795 |
25.60 |
| 2026-05-20 00:00 |
14:26:54.84 |
-16:53:40.4 |
HIP 70795 |
25.89 |
| 2026-05-20 12:00 |
14:26:53.68 |
-16:53:34.2 |
HIP 70795 |
26.18 |
| 2026-05-21 00:00 |
14:26:52.52 |
-16:53:28.1 |
HIP 70795 |
26.47 |
| 2026-05-21 12:00 |
14:26:51.37 |
-16:53:21.9 |
HIP 70795 |
26.76 |
| 2026-05-22 00:00 |
14:26:50.22 |
-16:53:15.7 |
HIP 70795 |
27.05 |
| 2026-05-22 12:00 |
14:26:49.08 |
-16:53:09.6 |
HIP 70795 |
27.33 |
| 2026-05-23 00:00 |
14:26:47.94 |
-16:53:03.5 |
HIP 70795 |
27.62 |
| 2026-05-23 12:00 |
14:26:46.80 |
-16:52:57.4 |
HIP 70795 |
27.90 |
| 2026-05-24 00:00 |
14:26:45.67 |
-16:52:51.3 |
HIP 70795 |
28.19 |
| 2026-05-24 12:00 |
14:26:44.54 |
-16:52:45.2 |
HIP 70795 |
28.47 |
| 2026-05-25 00:00 |
14:26:43.42 |
-16:52:39.1 |
HIP 70795 |
28.75 |
| 2026-05-25 12:00 |
14:26:42.30 |
-16:52:33.1 |
HIP 70795 |
29.04 |
| 2026-05-26 00:00 |
14:26:41.19 |
-16:52:27.0 |
HIP 70795 |
29.32 |
| 2026-05-26 12:00 |
14:26:40.08 |
-16:52:21.0 |
HIP 70795 |
29.60 |
| 2026-05-27 00:00 |
14:26:38.97 |
-16:52:15.0 |
HIP 70795 |
29.87 |
| 2026-05-27 12:00 |
14:26:37.88 |
-16:52:09.0 |
HIP 70795 |
30.15 |
| 2026-05-28 00:00 |
14:26:36.78 |
-16:52:03.1 |
HIP 70795 |
30.43 |
| 2026-05-28 12:00 |
14:26:35.69 |
-16:51:57.1 |
HIP 70795 |
30.70 |
| 2026-05-29 00:00 |
14:26:34.61 |
-16:51:51.2 |
HIP 70795 |
30.98 |
| 2026-05-29 12:00 |
14:26:33.53 |
-16:51:45.3 |
HIP 70795 |
31.25 |
| 2026-05-30 00:00 |
14:26:32.45 |
-16:51:39.4 |
HIP 70795 |
31.52 |
| 2026-05-30 12:00 |
14:26:31.38 |
-16:51:33.5 |
HIP 70795 |
31.79 |
| 2026-05-31 00:00 |
14:26:30.32 |
-16:51:27.6 |
HIP 70795 |
32.06 |
| 2026-05-31 12:00 |
14:26:29.26 |
-16:51:21.8 |
HIP 70795 |
32.33 |
| 2026-06-01 00:00 |
14:26:28.21 |
-16:51:16.0 |
HIP 70795 |
32.59 |
| 2026-06-01 12:00 |
14:26:27.16 |
-16:51:10.2 |
HIP 70795 |
32.86 |
| 2026-06-02 00:00 |
14:26:26.12 |
-16:51:04.4 |
HIP 70795 |
33.12 |