メタデータ
| 項目 |
値 |
| Designation |
110P/Hartley 3 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-12-16T16:15:29.649600Z |
| Orbit solution date (soln_date, UTC) |
2023-05-22T13:49:16Z |
| Obs used |
2416 |
| NEO |
- |
| M1 |
4.300 |
| K1 |
26.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2018-05-08.0000000 |
| e |
0.31628027 |
| q (au) |
2.464450 |
| a (au) |
3.604474 |
| i (deg) |
11.698362 |
| Ω (om, deg) |
287.529573 |
| ω (w, deg) |
167.395612 |
| M (ma, deg) |
178.350762 |
等級
散乱 + 全体線形
$$
M_a = (8.206 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.206 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.990 |
| 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 |
| 2019-07-25 |
2021-01-23 |
+34.4001 |
-14.061 |
| 2021-01-23 |
2023-05-13 |
-9.1575 |
+6.292 |
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) |
| 2026-06-01 00:00 |
21:37:36.09 |
-08:41:51.6 |
HIP 106800 |
4.61 |
| 2026-06-01 12:00 |
21:37:38.78 |
-08:40:24.5 |
HIP 106800 |
4.17 |
| 2026-06-02 00:00 |
21:37:41.25 |
-08:38:58.4 |
HIP 106800 |
4.36 |
| 2026-06-02 12:00 |
21:37:43.51 |
-08:37:33.1 |
HIP 106800 |
5.05 |
| 2026-06-03 00:00 |
21:37:45.56 |
-08:36:08.7 |
HIP 106800 |
6.07 |
| 2026-06-03 12:00 |
21:37:47.39 |
-08:34:45.2 |
HIP 106800 |
7.25 |
| 2026-06-04 00:00 |
21:37:49.01 |
-08:33:22.6 |
HIP 106800 |
8.52 |
| 2026-06-04 12:00 |
21:37:50.41 |
-08:32:00.9 |
HIP 106800 |
9.82 |
| 2026-06-05 00:00 |
21:37:51.60 |
-08:30:40.1 |
HIP 106800 |
11.14 |
| 2026-06-05 12:00 |
21:37:52.56 |
-08:29:20.3 |
HIP 106800 |
12.45 |
| 2026-06-06 00:00 |
21:37:53.31 |
-08:28:01.3 |
HIP 106800 |
13.76 |
| 2026-06-06 12:00 |
21:37:53.84 |
-08:26:43.4 |
HIP 106800 |
15.06 |
| 2026-06-07 00:00 |
21:37:54.15 |
-08:25:26.3 |
HIP 106800 |
16.34 |
| 2026-06-07 12:00 |
21:37:54.24 |
-08:24:10.2 |
HIP 106800 |
17.61 |
| 2026-06-08 00:00 |
21:37:54.11 |
-08:22:55.1 |
HIP 106800 |
18.86 |
| 2026-06-08 12:00 |
21:37:53.76 |
-08:21:40.9 |
HIP 106800 |
20.10 |
| 2026-06-09 00:00 |
21:37:53.19 |
-08:20:27.7 |
HIP 106800 |
21.32 |
| 2026-06-09 12:00 |
21:37:52.39 |
-08:19:15.5 |
HIP 106800 |
22.53 |
| 2026-06-10 00:00 |
21:37:51.37 |
-08:18:04.2 |
HIP 106800 |
23.72 |
| 2026-06-10 12:00 |
21:37:50.13 |
-08:16:54.0 |
HIP 106800 |
24.90 |
| 2026-06-11 00:00 |
21:37:48.66 |
-08:15:44.7 |
HIP 106786 |
24.51 |
| 2026-06-11 12:00 |
21:37:46.97 |
-08:14:36.5 |
HIP 106786 |
23.36 |
| 2026-06-12 00:00 |
21:37:45.05 |
-08:13:29.2 |
HIP 106786 |
22.24 |
| 2026-06-12 12:00 |
21:37:42.91 |
-08:12:23.0 |
HIP 106786 |
21.14 |
| 2026-06-13 00:00 |
21:37:40.54 |
-08:11:17.8 |
HIP 106786 |
20.08 |
| 2026-06-13 12:00 |
21:37:37.95 |
-08:10:13.6 |
HIP 106786 |
19.06 |
| 2026-06-14 00:00 |
21:37:35.13 |
-08:09:10.5 |
HIP 106786 |
18.09 |
| 2026-06-14 12:00 |
21:37:32.09 |
-08:08:08.4 |
HIP 106786 |
17.19 |
| 2026-06-15 00:00 |
21:37:28.81 |
-08:07:07.3 |
HIP 106786 |
16.37 |
| 2026-06-15 12:00 |
21:37:25.31 |
-08:06:07.3 |
HIP 106786 |
15.66 |
| 2026-06-16 00:00 |
21:37:21.59 |
-08:05:08.4 |
HIP 106786 |
15.06 |
| 2026-06-16 12:00 |
21:37:17.64 |
-08:04:10.5 |
HIP 106786 |
14.60 |
| 2026-06-17 00:00 |
21:37:13.46 |
-08:03:13.7 |
HIP 106786 |
14.31 |
| 2026-06-17 12:00 |
21:37:09.05 |
-08:02:17.9 |
HIP 106727 |
13.36 |
| 2026-06-18 00:00 |
21:37:04.42 |
-08:01:23.2 |
HIP 106727 |
12.45 |
| 2026-06-18 12:00 |
21:36:59.56 |
-08:00:29.6 |
HIP 106727 |
11.68 |
| 2026-06-19 00:00 |
21:36:54.48 |
-07:59:37.0 |
HIP 106727 |
11.09 |
| 2026-06-19 12:00 |
21:36:49.17 |
-07:58:45.5 |
HIP 106727 |
10.74 |
| 2026-06-20 00:00 |
21:36:43.64 |
-07:57:55.1 |
HIP 106727 |
10.65 |
| 2026-06-20 12:00 |
21:36:37.88 |
-07:57:05.8 |
HIP 106727 |
10.85 |
| 2026-06-21 00:00 |
21:36:31.89 |
-07:56:17.6 |
HIP 106727 |
11.35 |
| 2026-06-21 12:00 |
21:36:25.69 |
-07:55:30.5 |
HIP 106727 |
12.11 |
| 2026-06-22 00:00 |
21:36:19.25 |
-07:54:44.4 |
HIP 106727 |
13.13 |