メタデータ
| 項目 |
値 |
| Designation |
P/2017 K3 (Gasparovic) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-05-31T11:45:35.870400Z |
| Orbit solution date (soln_date, UTC) |
2021-07-01T22:13:00Z |
| Obs used |
99 |
| NEO |
- |
| M1 |
7.600 |
| K1 |
29.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2017-06-04.0000000 |
| e |
0.58118013 |
| q (au) |
2.334209 |
| a (au) |
5.573301 |
| i (deg) |
4.279072 |
| Ω (om, deg) |
354.328342 |
| ω (w, deg) |
253.209247 |
| M (ma, deg) |
0.262932 |
等級
散乱 + 全体線形
$$
M_a = (11.811 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.811 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.502 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
05:23:34.06 |
+27:21:17.9 |
HIP 25159 |
19.79 |
| 2026-03-26 12:00 |
05:23:41.23 |
+27:21:08.6 |
HIP 25159 |
20.30 |
| 2026-03-27 00:00 |
05:23:48.52 |
+27:20:59.5 |
HIP 25159 |
20.94 |
| 2026-03-27 12:00 |
05:23:55.93 |
+27:20:50.5 |
HIP 25159 |
21.70 |
| 2026-03-28 00:00 |
05:24:03.46 |
+27:20:41.6 |
HIP 25159 |
22.57 |
| 2026-03-28 12:00 |
05:24:11.11 |
+27:20:32.9 |
HIP 25159 |
23.55 |
| 2026-03-29 00:00 |
05:24:18.88 |
+27:20:24.3 |
HIP 25159 |
24.63 |
| 2026-03-29 12:00 |
05:24:26.77 |
+27:20:15.9 |
HIP 25159 |
25.80 |
| 2026-03-30 00:00 |
05:24:34.78 |
+27:20:07.5 |
HIP 25159 |
27.06 |
| 2026-03-30 12:00 |
05:24:42.90 |
+27:19:59.3 |
HIP 25159 |
28.39 |
| 2026-03-31 00:00 |
05:24:51.14 |
+27:19:51.3 |
HIP 25159 |
29.80 |
| 2026-03-31 12:00 |
05:24:59.50 |
+27:19:43.3 |
HIP 25450 |
29.44 |
| 2026-04-01 00:00 |
05:25:07.97 |
+27:19:35.5 |
HIP 25450 |
27.98 |
| 2026-04-01 12:00 |
05:25:16.56 |
+27:19:27.8 |
HIP 25450 |
26.56 |
| 2026-04-02 00:00 |
05:25:25.26 |
+27:19:20.3 |
HIP 25450 |
25.19 |
| 2026-04-02 12:00 |
05:25:34.07 |
+27:19:12.9 |
HIP 25450 |
23.89 |
| 2026-04-03 00:00 |
05:25:43.00 |
+27:19:05.6 |
HIP 25450 |
22.67 |
| 2026-04-03 12:00 |
05:25:52.04 |
+27:18:58.4 |
HIP 25450 |
21.56 |
| 2026-04-04 00:00 |
05:26:01.19 |
+27:18:51.3 |
HIP 25450 |
20.58 |
| 2026-04-04 12:00 |
05:26:10.45 |
+27:18:44.4 |
HIP 25450 |
19.75 |
| 2026-04-05 00:00 |
05:26:19.82 |
+27:18:37.6 |
HIP 25450 |
19.11 |
| 2026-04-05 12:00 |
05:26:29.30 |
+27:18:30.9 |
HIP 25450 |
18.68 |
| 2026-04-06 00:00 |
05:26:38.89 |
+27:18:24.3 |
HIP 25450 |
18.48 |
| 2026-04-06 12:00 |
05:26:48.59 |
+27:18:17.8 |
HIP 25484 |
18.53 |
| 2026-04-07 00:00 |
05:26:58.40 |
+27:18:11.5 |
HIP 25484 |
18.44 |
| 2026-04-07 12:00 |
05:27:08.32 |
+27:18:05.3 |
HIP 25484 |
18.59 |
| 2026-04-08 00:00 |
05:27:18.34 |
+27:17:59.1 |
HIP 25484 |
19.01 |
| 2026-04-08 12:00 |
05:27:28.47 |
+27:17:53.1 |
HIP 25484 |
19.67 |
| 2026-04-09 00:00 |
05:27:38.70 |
+27:17:47.2 |
HIP 25484 |
20.57 |
| 2026-04-09 12:00 |
05:27:49.04 |
+27:17:41.4 |
HIP 25484 |
21.68 |
| 2026-04-10 00:00 |
05:27:59.48 |
+27:17:35.8 |
HIP 25484 |
22.98 |
| 2026-04-10 12:00 |
05:28:10.03 |
+27:17:30.2 |
HIP 25484 |
24.45 |
| 2026-04-11 00:00 |
05:28:20.68 |
+27:17:24.7 |
HIP 25484 |
26.05 |
| 2026-04-11 12:00 |
05:28:31.43 |
+27:17:19.4 |
HIP 25736 |
26.53 |
| 2026-04-12 00:00 |
05:28:42.28 |
+27:17:14.1 |
HIP 25736 |
25.07 |
| 2026-04-12 12:00 |
05:28:53.24 |
+27:17:08.9 |
HIP 25736 |
23.75 |
| 2026-04-13 00:00 |
05:29:04.30 |
+27:17:03.9 |
HIP 25736 |
22.61 |
| 2026-04-13 12:00 |
05:29:15.45 |
+27:16:58.9 |
HIP 25736 |
21.69 |
| 2026-04-14 00:00 |
05:29:26.71 |
+27:16:54.0 |
HIP 25736 |
21.01 |
| 2026-04-14 12:00 |
05:29:38.06 |
+27:16:49.3 |
HIP 25736 |
20.63 |
| 2026-04-15 00:00 |
05:29:49.51 |
+27:16:44.6 |
HIP 25736 |
20.55 |
| 2026-04-15 12:00 |
05:30:01.06 |
+27:16:40.0 |
HIP 25736 |
20.79 |
| 2026-04-16 00:00 |
05:30:12.71 |
+27:16:35.5 |
HIP 25736 |
21.35 |