メタデータ
| 項目 |
値 |
| Designation |
C/1955 N1 (Bakharev-Macfarlane-Krienke) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1955-07-11T12:59:41.798400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:12Z |
| Obs used |
28 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1955-08-16.0000000 |
| e |
0.99424862 |
| q (au) |
1.427452 |
| a (au) |
248.192798 |
| i (deg) |
50.033957 |
| Ω (om, deg) |
303.466133 |
| ω (w, deg) |
13.216239 |
| M (ma, deg) |
0.008938 |
等級
散乱 + 全体線形
$$
M_a = (6.175 + 5.060\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.175 |
| n |
5.060 |
| gf |
0.800 |
| gb |
-0.724 |
| k |
1.000 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 1955-07-13 |
1955-09-13 |
+0.5509 |
-0.010 |
| 1955-09-13 |
1955-11-23 |
+6.3738 |
-2.002 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
08:23:35.40 |
+19:07:54.9 |
HIP 41233 |
17.69 |
| 2026-07-29 12:00 |
08:23:36.71 |
+19:07:50.2 |
HIP 41233 |
17.40 |
| 2026-07-30 00:00 |
08:23:38.02 |
+19:07:45.5 |
HIP 41233 |
17.10 |
| 2026-07-30 12:00 |
08:23:39.33 |
+19:07:40.7 |
HIP 41233 |
16.81 |
| 2026-07-31 00:00 |
08:23:40.64 |
+19:07:36.0 |
HIP 41233 |
16.51 |
| 2026-07-31 12:00 |
08:23:41.95 |
+19:07:31.2 |
HIP 41233 |
16.22 |
| 2026-08-01 00:00 |
08:23:43.26 |
+19:07:26.5 |
HIP 41233 |
15.93 |
| 2026-08-01 12:00 |
08:23:44.57 |
+19:07:21.8 |
HIP 41233 |
15.64 |
| 2026-08-02 00:00 |
08:23:45.87 |
+19:07:17.0 |
HIP 41233 |
15.35 |
| 2026-08-02 12:00 |
08:23:47.18 |
+19:07:12.3 |
HIP 41233 |
15.07 |
| 2026-08-03 00:00 |
08:23:48.48 |
+19:07:07.6 |
HIP 41233 |
14.78 |
| 2026-08-03 12:00 |
08:23:49.78 |
+19:07:02.9 |
HIP 41233 |
14.50 |
| 2026-08-04 00:00 |
08:23:51.08 |
+19:06:58.1 |
HIP 41233 |
14.22 |
| 2026-08-04 12:00 |
08:23:52.38 |
+19:06:53.4 |
HIP 41233 |
13.93 |
| 2026-08-05 00:00 |
08:23:53.68 |
+19:06:48.7 |
HIP 41233 |
13.66 |
| 2026-08-05 12:00 |
08:23:54.98 |
+19:06:44.0 |
HIP 41233 |
13.38 |
| 2026-08-06 00:00 |
08:23:56.27 |
+19:06:39.3 |
HIP 41233 |
13.11 |
| 2026-08-06 12:00 |
08:23:57.57 |
+19:06:34.6 |
HIP 41233 |
12.84 |
| 2026-08-07 00:00 |
08:23:58.86 |
+19:06:29.9 |
HIP 41233 |
12.57 |
| 2026-08-07 12:00 |
08:24:00.15 |
+19:06:25.2 |
HIP 41233 |
12.30 |
| 2026-08-08 00:00 |
08:24:01.43 |
+19:06:20.5 |
HIP 41233 |
12.04 |
| 2026-08-08 12:00 |
08:24:02.72 |
+19:06:15.9 |
HIP 41233 |
11.77 |
| 2026-08-09 00:00 |
08:24:04.00 |
+19:06:11.2 |
HIP 41233 |
11.52 |
| 2026-08-09 12:00 |
08:24:05.28 |
+19:06:06.5 |
HIP 41233 |
11.26 |
| 2026-08-10 00:00 |
08:24:06.56 |
+19:06:01.9 |
HIP 41233 |
11.01 |
| 2026-08-10 12:00 |
08:24:07.84 |
+19:05:57.2 |
HIP 41233 |
10.76 |
| 2026-08-11 00:00 |
08:24:09.11 |
+19:05:52.6 |
HIP 41233 |
10.52 |
| 2026-08-11 12:00 |
08:24:10.38 |
+19:05:48.0 |
HIP 41233 |
10.28 |
| 2026-08-12 00:00 |
08:24:11.65 |
+19:05:43.3 |
HIP 41233 |
10.05 |
| 2026-08-12 12:00 |
08:24:12.91 |
+19:05:38.7 |
HIP 41233 |
9.81 |
| 2026-08-13 00:00 |
08:24:14.17 |
+19:05:34.1 |
HIP 41233 |
9.59 |
| 2026-08-13 12:00 |
08:24:15.43 |
+19:05:29.5 |
HIP 41233 |
9.37 |
| 2026-08-14 00:00 |
08:24:16.69 |
+19:05:24.9 |
HIP 41233 |
9.15 |
| 2026-08-14 12:00 |
08:24:17.94 |
+19:05:20.3 |
HIP 41233 |
8.94 |
| 2026-08-15 00:00 |
08:24:19.19 |
+19:05:15.8 |
HIP 41233 |
8.74 |
| 2026-08-15 12:00 |
08:24:20.43 |
+19:05:11.2 |
HIP 41233 |
8.55 |
| 2026-08-16 00:00 |
08:24:21.67 |
+19:05:06.7 |
HIP 41233 |
8.36 |
| 2026-08-16 12:00 |
08:24:22.91 |
+19:05:02.1 |
HIP 41233 |
8.18 |
| 2026-08-17 00:00 |
08:24:24.15 |
+19:04:57.6 |
HIP 41233 |
8.00 |
| 2026-08-17 12:00 |
08:24:25.38 |
+19:04:53.1 |
HIP 41233 |
7.84 |
| 2026-08-18 00:00 |
08:24:26.60 |
+19:04:48.6 |
HIP 41233 |
7.68 |
| 2026-08-18 12:00 |
08:24:27.82 |
+19:04:44.1 |
HIP 41233 |
7.53 |
| 2026-08-19 00:00 |
08:24:29.04 |
+19:04:39.6 |
HIP 41233 |
7.39 |