メタデータ
| 項目 |
値 |
| Designation |
C/1998 K3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1998-03-07T04:25:03.285120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:53Z |
| Obs used |
178 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
10.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1998-06-05.0000000 |
| e |
0.99798200 |
| q (au) |
3.546314 |
| a (au) |
1757.339168 |
| i (deg) |
160.205607 |
| Ω (om, deg) |
307.947616 |
| ω (w, deg) |
47.827040 |
| M (ma, deg) |
0.001202 |
等級
散乱 + 全体線形
$$
M_a = (7.620 + 5.981\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.620 |
| n |
5.981 |
| gf |
0.876 |
| gb |
-0.500 |
| k |
0.953 |
| δ90 |
1.000 |
| 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 |
07:27:31.19 |
+16:14:22.7 |
HIP 36406 |
28.44 |
| 2026-03-26 12:00 |
07:27:30.36 |
+16:14:27.4 |
HIP 36406 |
28.65 |
| 2026-03-27 00:00 |
07:27:29.56 |
+16:14:32.0 |
HIP 36406 |
28.85 |
| 2026-03-27 12:00 |
07:27:28.78 |
+16:14:36.5 |
HIP 36406 |
29.05 |
| 2026-03-28 00:00 |
07:27:28.01 |
+16:14:41.0 |
HIP 36406 |
29.24 |
| 2026-03-28 12:00 |
07:27:27.28 |
+16:14:45.5 |
HIP 36406 |
29.43 |
| 2026-03-29 00:00 |
07:27:26.56 |
+16:14:49.9 |
HIP 36406 |
29.61 |
| 2026-03-29 12:00 |
07:27:25.86 |
+16:14:54.3 |
HIP 36406 |
29.79 |
| 2026-03-30 00:00 |
07:27:25.19 |
+16:14:58.7 |
HIP 36406 |
29.96 |
| 2026-03-30 12:00 |
07:27:24.53 |
+16:15:03.0 |
HIP 36406 |
30.13 |
| 2026-03-31 00:00 |
07:27:23.90 |
+16:15:07.2 |
HIP 36406 |
30.29 |
| 2026-03-31 12:00 |
07:27:23.29 |
+16:15:11.4 |
HIP 36406 |
30.44 |
| 2026-04-01 00:00 |
07:27:22.71 |
+16:15:15.6 |
HIP 36406 |
30.59 |
| 2026-04-01 12:00 |
07:27:22.14 |
+16:15:19.8 |
HIP 36406 |
30.74 |
| 2026-04-02 00:00 |
07:27:21.59 |
+16:15:23.9 |
HIP 36406 |
30.88 |
| 2026-04-02 12:00 |
07:27:21.07 |
+16:15:27.9 |
HIP 36406 |
31.02 |
| 2026-04-03 00:00 |
07:27:20.57 |
+16:15:31.9 |
HIP 36406 |
31.15 |
| 2026-04-03 12:00 |
07:27:20.09 |
+16:15:35.9 |
HIP 36406 |
31.27 |
| 2026-04-04 00:00 |
07:27:19.63 |
+16:15:39.8 |
HIP 36406 |
31.39 |
| 2026-04-04 12:00 |
07:27:19.20 |
+16:15:43.7 |
HIP 36406 |
31.51 |
| 2026-04-05 00:00 |
07:27:18.78 |
+16:15:47.5 |
HIP 36406 |
31.62 |
| 2026-04-05 12:00 |
07:27:18.39 |
+16:15:51.3 |
HIP 36406 |
31.72 |
| 2026-04-06 00:00 |
07:27:18.02 |
+16:15:55.0 |
HIP 36406 |
31.82 |
| 2026-04-06 12:00 |
07:27:17.67 |
+16:15:58.7 |
HIP 36406 |
31.92 |
| 2026-04-07 00:00 |
07:27:17.34 |
+16:16:02.4 |
HIP 36406 |
32.00 |
| 2026-04-07 12:00 |
07:27:17.03 |
+16:16:06.0 |
HIP 36406 |
32.09 |
| 2026-04-08 00:00 |
07:27:16.75 |
+16:16:09.5 |
HIP 36406 |
32.17 |
| 2026-04-08 12:00 |
07:27:16.49 |
+16:16:13.0 |
HIP 36406 |
32.24 |
| 2026-04-09 00:00 |
07:27:16.25 |
+16:16:16.5 |
HIP 36406 |
32.31 |
| 2026-04-09 12:00 |
07:27:16.03 |
+16:16:19.9 |
HIP 36406 |
32.37 |
| 2026-04-10 00:00 |
07:27:15.83 |
+16:16:23.3 |
HIP 36406 |
32.43 |
| 2026-04-10 12:00 |
07:27:15.65 |
+16:16:26.6 |
HIP 36406 |
32.48 |
| 2026-04-11 00:00 |
07:27:15.50 |
+16:16:29.9 |
HIP 36406 |
32.53 |
| 2026-04-11 12:00 |
07:27:15.37 |
+16:16:33.1 |
HIP 36406 |
32.57 |
| 2026-04-12 00:00 |
07:27:15.26 |
+16:16:36.3 |
HIP 36406 |
32.61 |
| 2026-04-12 12:00 |
07:27:15.17 |
+16:16:39.4 |
HIP 36406 |
32.64 |
| 2026-04-13 00:00 |
07:27:15.10 |
+16:16:42.5 |
HIP 36406 |
32.67 |
| 2026-04-13 12:00 |
07:27:15.05 |
+16:16:45.6 |
HIP 36406 |
32.69 |
| 2026-04-14 00:00 |
07:27:15.03 |
+16:16:48.5 |
HIP 36406 |
32.70 |
| 2026-04-14 12:00 |
07:27:15.02 |
+16:16:51.5 |
HIP 36406 |
32.71 |
| 2026-04-15 00:00 |
07:27:15.04 |
+16:16:54.4 |
HIP 36406 |
32.72 |
| 2026-04-15 12:00 |
07:27:15.08 |
+16:16:57.2 |
HIP 36406 |
32.72 |
| 2026-04-16 00:00 |
07:27:15.15 |
+16:17:00.0 |
HIP 36406 |
32.72 |