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) |
| 2026-03-26 00:00 |
19:16:55.74 |
-22:03:40.1 |
HIP 94784 |
18.60 |
| 2026-03-26 12:00 |
19:17:09.01 |
-22:02:42.7 |
HIP 94784 |
17.31 |
| 2026-03-27 00:00 |
19:17:22.12 |
-22:01:45.4 |
HIP 94784 |
16.56 |
| 2026-03-27 12:00 |
19:17:35.07 |
-22:00:48.1 |
HIP 94784 |
16.39 |
| 2026-03-28 00:00 |
19:17:47.86 |
-21:59:51.0 |
HIP 94919 |
16.66 |
| 2026-03-28 12:00 |
19:18:00.49 |
-21:58:54.0 |
HIP 94919 |
14.46 |
| 2026-03-29 00:00 |
19:18:12.96 |
-21:57:57.2 |
HIP 94919 |
12.65 |
| 2026-03-29 12:00 |
19:18:25.27 |
-21:57:00.4 |
HIP 94919 |
11.41 |
| 2026-03-30 00:00 |
19:18:37.41 |
-21:56:03.8 |
HIP 94919 |
10.88 |
| 2026-03-30 12:00 |
19:18:49.39 |
-21:55:07.3 |
HIP 94919 |
11.16 |
| 2026-03-31 00:00 |
19:19:01.21 |
-21:54:10.9 |
HIP 94919 |
12.14 |
| 2026-03-31 12:00 |
19:19:12.86 |
-21:53:14.7 |
HIP 94919 |
13.67 |
| 2026-04-01 00:00 |
19:19:24.34 |
-21:52:18.6 |
HIP 94919 |
15.55 |
| 2026-04-01 12:00 |
19:19:35.66 |
-21:51:22.6 |
HIP 94919 |
17.67 |
| 2026-04-02 00:00 |
19:19:46.81 |
-21:50:26.8 |
HIP 94919 |
19.92 |
| 2026-04-02 12:00 |
19:19:57.79 |
-21:49:31.1 |
HIP 95105 |
21.65 |
| 2026-04-03 00:00 |
19:20:08.60 |
-21:48:35.6 |
HIP 95105 |
19.46 |
| 2026-04-03 12:00 |
19:20:19.23 |
-21:47:40.2 |
HIP 95105 |
17.44 |
| 2026-04-04 00:00 |
19:20:29.70 |
-21:46:45.0 |
HIP 95105 |
15.61 |
| 2026-04-04 12:00 |
19:20:39.99 |
-21:45:49.9 |
HIP 95105 |
14.04 |
| 2026-04-05 00:00 |
19:20:50.11 |
-21:44:55.0 |
HIP 95105 |
12.80 |
| 2026-04-05 12:00 |
19:21:00.06 |
-21:44:00.3 |
HIP 95105 |
11.97 |
| 2026-04-06 00:00 |
19:21:09.82 |
-21:43:05.7 |
HIP 95193 |
11.08 |
| 2026-04-06 12:00 |
19:21:19.42 |
-21:42:11.3 |
HIP 95193 |
8.67 |
| 2026-04-07 00:00 |
19:21:28.83 |
-21:41:17.1 |
HIP 95193 |
6.31 |
| 2026-04-07 12:00 |
19:21:38.07 |
-21:40:23.0 |
HIP 95193 |
3.98 |
| 2026-04-08 00:00 |
19:21:47.12 |
-21:39:29.2 |
HIP 95193 |
1.70 |
| 2026-04-08 12:00 |
19:21:56.00 |
-21:38:35.5 |
HIP 95193 |
0.58 |
| 2026-04-09 00:00 |
19:22:04.69 |
-21:37:42.0 |
HIP 95193 |
2.77 |
| 2026-04-09 12:00 |
19:22:13.20 |
-21:36:48.7 |
HIP 95193 |
4.93 |
| 2026-04-10 00:00 |
19:22:21.53 |
-21:35:55.6 |
HIP 95193 |
7.06 |
| 2026-04-10 12:00 |
19:22:29.68 |
-21:35:02.7 |
HIP 95193 |
9.15 |
| 2026-04-11 00:00 |
19:22:37.63 |
-21:34:10.0 |
HIP 95193 |
11.20 |
| 2026-04-11 12:00 |
19:22:45.41 |
-21:33:17.5 |
HIP 95193 |
13.20 |
| 2026-04-12 00:00 |
19:22:52.99 |
-21:32:25.2 |
HIP 95193 |
15.17 |
| 2026-04-12 12:00 |
19:23:00.39 |
-21:31:33.1 |
HIP 95193 |
17.09 |
| 2026-04-13 00:00 |
19:23:07.59 |
-21:30:41.3 |
HIP 95193 |
18.98 |
| 2026-04-13 12:00 |
19:23:14.61 |
-21:29:49.6 |
HIP 95193 |
20.82 |
| 2026-04-14 00:00 |
19:23:21.43 |
-21:28:58.2 |
HIP 95193 |
22.62 |
| 2026-04-14 12:00 |
19:23:28.07 |
-21:28:07.0 |
HIP 95193 |
24.38 |
| 2026-04-15 00:00 |
19:23:34.51 |
-21:27:16.0 |
HIP 95193 |
26.10 |
| 2026-04-15 12:00 |
19:23:40.75 |
-21:26:25.3 |
HIP 95193 |
27.78 |
| 2026-04-16 00:00 |
19:23:46.80 |
-21:25:34.7 |
HIP 95193 |
29.41 |