メタデータ
| 項目 |
値 |
| Designation |
216P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-05-30T22:32:33.506880Z |
| Orbit solution date (soln_date, UTC) |
2024-07-07T00:42:15Z |
| Obs used |
403 |
| NEO |
- |
| M1 |
10.700 |
| K1 |
21.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2017-04-30.0000000 |
| e |
0.44545351 |
| q (au) |
2.148896 |
| a (au) |
3.875051 |
| i (deg) |
9.046729 |
| Ω (om, deg) |
359.865529 |
| ω (w, deg) |
151.513702 |
| M (ma, deg) |
43.163177 |
等級
散乱 + 全体線形
$$
M_a = (12.693 + 5.566\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.693 |
| n |
5.566 |
| gf |
1.000 |
| gb |
-0.943 |
| 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) |
| 2026-07-29 00:00 |
20:41:44.23 |
-27:45:28.3 |
HIP 102108 |
14.42 |
| 2026-07-29 12:00 |
20:41:23.87 |
-27:46:25.1 |
HIP 102108 |
13.44 |
| 2026-07-30 00:00 |
20:41:03.51 |
-27:47:21.2 |
HIP 102030 |
13.66 |
| 2026-07-30 12:00 |
20:40:43.15 |
-27:48:16.4 |
HIP 101976 |
11.69 |
| 2026-07-31 00:00 |
20:40:22.80 |
-27:49:10.9 |
HIP 101976 |
8.55 |
| 2026-07-31 12:00 |
20:40:02.45 |
-27:50:04.6 |
HIP 101976 |
7.19 |
| 2026-08-01 00:00 |
20:39:42.10 |
-27:50:57.5 |
HIP 101976 |
8.49 |
| 2026-08-01 12:00 |
20:39:21.77 |
-27:51:49.6 |
HIP 101976 |
11.59 |
| 2026-08-02 00:00 |
20:39:01.46 |
-27:52:40.9 |
HIP 101976 |
15.43 |
| 2026-08-02 12:00 |
20:38:41.16 |
-27:53:31.3 |
HIP 101976 |
19.57 |
| 2026-08-03 00:00 |
20:38:20.89 |
-27:54:20.9 |
HIP 101976 |
23.86 |
| 2026-08-03 12:00 |
20:38:00.64 |
-27:55:09.6 |
HIP 101976 |
28.22 |
| 2026-08-04 00:00 |
20:37:40.42 |
-27:55:57.5 |
HIP 101610 |
28.25 |
| 2026-08-04 12:00 |
20:37:20.23 |
-27:56:44.6 |
HIP 101610 |
23.73 |
| 2026-08-05 00:00 |
20:37:00.08 |
-27:57:30.7 |
HIP 101610 |
19.23 |
| 2026-08-05 12:00 |
20:36:39.96 |
-27:58:16.0 |
HIP 101610 |
14.75 |
| 2026-08-06 00:00 |
20:36:19.89 |
-27:59:00.4 |
HIP 101610 |
10.31 |
| 2026-08-06 12:00 |
20:35:59.85 |
-27:59:43.9 |
HIP 101610 |
5.94 |
| 2026-08-07 00:00 |
20:35:39.87 |
-28:00:26.5 |
HIP 101610 |
2.12 |
| 2026-08-07 12:00 |
20:35:19.94 |
-28:01:08.2 |
HIP 101610 |
3.67 |
| 2026-08-08 00:00 |
20:35:00.06 |
-28:01:49.0 |
HIP 101610 |
7.87 |
| 2026-08-08 12:00 |
20:34:40.24 |
-28:02:28.9 |
HIP 101610 |
12.22 |
| 2026-08-09 00:00 |
20:34:20.48 |
-28:03:07.8 |
HIP 101610 |
16.59 |
| 2026-08-09 12:00 |
20:34:00.79 |
-28:03:45.9 |
HIP 101610 |
20.96 |
| 2026-08-10 00:00 |
20:33:41.16 |
-28:04:22.9 |
HIP 101610 |
25.32 |
| 2026-08-10 12:00 |
20:33:21.60 |
-28:04:59.1 |
HIP 101283 |
21.08 |
| 2026-08-11 00:00 |
20:33:02.12 |
-28:05:34.3 |
HIP 101283 |
16.82 |
| 2026-08-11 12:00 |
20:32:42.72 |
-28:06:08.5 |
HIP 101283 |
12.62 |
| 2026-08-12 00:00 |
20:32:23.39 |
-28:06:41.8 |
HIP 101283 |
8.55 |
| 2026-08-12 12:00 |
20:32:04.15 |
-28:07:14.1 |
HIP 101283 |
4.89 |
| 2026-08-13 00:00 |
20:31:45.00 |
-28:07:45.4 |
HIP 101283 |
3.36 |
| 2026-08-13 12:00 |
20:31:25.94 |
-28:08:15.8 |
HIP 101283 |
5.88 |
| 2026-08-14 00:00 |
20:31:06.97 |
-28:08:45.2 |
HIP 101283 |
9.65 |
| 2026-08-14 12:00 |
20:30:48.10 |
-28:09:13.6 |
HIP 101283 |
13.66 |
| 2026-08-15 00:00 |
20:30:29.32 |
-28:09:41.1 |
HIP 101283 |
17.72 |
| 2026-08-15 12:00 |
20:30:10.65 |
-28:10:07.5 |
HIP 101242 |
21.30 |
| 2026-08-16 00:00 |
20:29:52.09 |
-28:10:33.0 |
HIP 101242 |
24.02 |
| 2026-08-16 12:00 |
20:29:33.64 |
-28:10:57.5 |
HIP 100935 |
22.19 |
| 2026-08-17 00:00 |
20:29:15.29 |
-28:11:20.9 |
HIP 100935 |
18.16 |
| 2026-08-17 12:00 |
20:28:57.06 |
-28:11:43.4 |
HIP 100935 |
14.19 |
| 2026-08-18 00:00 |
20:28:38.95 |
-28:12:04.9 |
HIP 100935 |
10.28 |
| 2026-08-18 12:00 |
20:28:20.96 |
-28:12:25.5 |
HIP 100935 |
6.54 |
| 2026-08-19 00:00 |
20:28:03.09 |
-28:12:45.0 |
HIP 100935 |
3.39 |