メタデータ
| 項目 |
値 |
| Designation |
277P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-06-04T19:48:10.031040Z |
| Orbit solution date (soln_date, UTC) |
2021-05-02T23:43:01Z |
| Obs used |
828 |
| NEO |
- |
| M1 |
11.800 |
| K1 |
19.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2016-09-16.0000000 |
| e |
0.50379346 |
| q (au) |
1.914197 |
| a (au) |
3.857662 |
| i (deg) |
16.748332 |
| Ω (om, deg) |
276.352145 |
| ω (w, deg) |
152.176271 |
| M (ma, deg) |
155.991309 |
等級
散乱 + 全体線形
$$
M_a = (12.075 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.075 |
| n |
6.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
19:24:18.17 |
-20:47:59.0 |
HIP 95244 |
24.75 |
| 2026-05-12 12:00 |
19:24:13.11 |
-20:47:23.4 |
HIP 95244 |
23.43 |
| 2026-05-13 00:00 |
19:24:07.83 |
-20:46:48.0 |
HIP 95244 |
22.07 |
| 2026-05-13 12:00 |
19:24:02.33 |
-20:46:13.0 |
HIP 95244 |
20.66 |
| 2026-05-14 00:00 |
19:23:56.61 |
-20:45:38.3 |
HIP 95244 |
19.20 |
| 2026-05-14 12:00 |
19:23:50.67 |
-20:45:03.9 |
HIP 95244 |
17.70 |
| 2026-05-15 00:00 |
19:23:44.52 |
-20:44:29.8 |
HIP 95244 |
16.15 |
| 2026-05-15 12:00 |
19:23:38.14 |
-20:43:56.0 |
HIP 95244 |
14.56 |
| 2026-05-16 00:00 |
19:23:31.55 |
-20:43:22.5 |
HIP 95244 |
12.92 |
| 2026-05-16 12:00 |
19:23:24.73 |
-20:42:49.3 |
HIP 95244 |
11.23 |
| 2026-05-17 00:00 |
19:23:17.70 |
-20:42:16.4 |
HIP 95244 |
9.50 |
| 2026-05-17 12:00 |
19:23:10.45 |
-20:41:43.8 |
HIP 95244 |
7.73 |
| 2026-05-18 00:00 |
19:23:02.99 |
-20:41:11.5 |
HIP 95244 |
5.92 |
| 2026-05-18 12:00 |
19:22:55.30 |
-20:40:39.5 |
HIP 95244 |
4.09 |
| 2026-05-19 00:00 |
19:22:47.40 |
-20:40:07.8 |
HIP 95244 |
2.29 |
| 2026-05-19 12:00 |
19:22:39.29 |
-20:39:36.4 |
HIP 95244 |
1.07 |
| 2026-05-20 00:00 |
19:22:30.96 |
-20:39:05.3 |
HIP 95244 |
2.25 |
| 2026-05-20 12:00 |
19:22:22.42 |
-20:38:34.5 |
HIP 95244 |
4.18 |
| 2026-05-21 00:00 |
19:22:13.66 |
-20:38:03.9 |
HIP 95244 |
6.25 |
| 2026-05-21 12:00 |
19:22:04.69 |
-20:37:33.7 |
HIP 95244 |
8.39 |
| 2026-05-22 00:00 |
19:21:55.51 |
-20:37:03.7 |
HIP 95244 |
10.59 |
| 2026-05-22 12:00 |
19:21:46.11 |
-20:36:34.1 |
HIP 95244 |
12.83 |
| 2026-05-23 00:00 |
19:21:36.51 |
-20:36:04.7 |
HIP 95244 |
15.13 |
| 2026-05-23 12:00 |
19:21:26.69 |
-20:35:35.6 |
HIP 95244 |
17.48 |
| 2026-05-24 00:00 |
19:21:16.67 |
-20:35:06.7 |
HIP 95244 |
19.87 |
| 2026-05-24 12:00 |
19:21:06.44 |
-20:34:38.2 |
HIP 95244 |
22.31 |
| 2026-05-25 00:00 |
19:20:56.00 |
-20:34:09.9 |
HIP 94964 |
22.19 |
| 2026-05-25 12:00 |
19:20:45.36 |
-20:33:41.9 |
HIP 94964 |
19.72 |
| 2026-05-26 00:00 |
19:20:34.51 |
-20:33:14.1 |
HIP 94964 |
17.22 |
| 2026-05-26 12:00 |
19:20:23.46 |
-20:32:46.6 |
HIP 94964 |
14.72 |
| 2026-05-27 00:00 |
19:20:12.20 |
-20:32:19.4 |
HIP 94964 |
12.22 |
| 2026-05-27 12:00 |
19:20:00.74 |
-20:31:52.4 |
HIP 94964 |
9.79 |
| 2026-05-28 00:00 |
19:19:49.08 |
-20:31:25.7 |
HIP 94964 |
7.53 |
| 2026-05-28 12:00 |
19:19:37.21 |
-20:30:59.3 |
HIP 94964 |
5.73 |
| 2026-05-29 00:00 |
19:19:25.15 |
-20:30:33.1 |
HIP 94964 |
4.98 |
| 2026-05-29 12:00 |
19:19:12.89 |
-20:30:07.1 |
HIP 94964 |
5.79 |
| 2026-05-30 00:00 |
19:19:00.43 |
-20:29:41.4 |
HIP 94964 |
7.73 |
| 2026-05-30 12:00 |
19:18:47.78 |
-20:29:15.9 |
HIP 94964 |
10.21 |
| 2026-05-31 00:00 |
19:18:34.93 |
-20:28:50.7 |
HIP 94964 |
12.96 |
| 2026-05-31 12:00 |
19:18:21.88 |
-20:28:25.7 |
HIP 94964 |
15.85 |
| 2026-06-01 00:00 |
19:18:08.65 |
-20:28:01.0 |
HIP 94964 |
18.86 |
| 2026-06-01 12:00 |
19:17:55.22 |
-20:27:36.5 |
HIP 94964 |
21.94 |
| 2026-06-02 00:00 |
19:17:41.60 |
-20:27:12.2 |
HIP 94749 |
23.24 |