メタデータ
| 項目 |
値 |
| Designation |
C/1975 N1 (Kobayashi-Berger-Milon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1975-09-05T08:02:10.029120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:24Z |
| Obs used |
390 |
| NEO |
- |
| M1 |
7.900 |
| K1 |
11.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1975-08-09.0000000 |
| e |
1.00009176 |
| q (au) |
0.425564 |
| a (au) |
-4637.833606 |
| i (deg) |
80.781301 |
| Ω (om, deg) |
296.352017 |
| ω (w, deg) |
116.969468 |
| M (ma, deg) |
-0.000085 |
等級
散乱 + 全体線形
$$
M_a = (7.113 + 3.526\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.113 |
| n |
3.526 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
0.975 |
| δ90 |
8.837 |
| 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) |
| 2026-06-01 00:00 |
05:25:07.30 |
-86:23:20.0 |
HIP 25412 |
0.93 |
| 2026-06-01 12:00 |
05:25:30.83 |
-86:23:16.2 |
HIP 25412 |
0.56 |
| 2026-06-02 00:00 |
05:25:54.39 |
-86:23:12.5 |
HIP 25412 |
0.21 |
| 2026-06-02 12:00 |
05:26:17.97 |
-86:23:09.0 |
HIP 25412 |
0.24 |
| 2026-06-03 00:00 |
05:26:41.58 |
-86:23:05.6 |
HIP 25412 |
0.60 |
| 2026-06-03 12:00 |
05:27:05.22 |
-86:23:02.3 |
HIP 25412 |
0.97 |
| 2026-06-04 00:00 |
05:27:28.88 |
-86:22:59.2 |
HIP 25412 |
1.34 |
| 2026-06-04 12:00 |
05:27:52.56 |
-86:22:56.3 |
HIP 25412 |
1.72 |
| 2026-06-05 00:00 |
05:28:16.26 |
-86:22:53.4 |
HIP 25412 |
2.09 |
| 2026-06-05 12:00 |
05:28:39.98 |
-86:22:50.7 |
HIP 25412 |
2.47 |
| 2026-06-06 00:00 |
05:29:03.73 |
-86:22:48.2 |
HIP 25412 |
2.84 |
| 2026-06-06 12:00 |
05:29:27.49 |
-86:22:45.8 |
HIP 25412 |
3.22 |
| 2026-06-07 00:00 |
05:29:51.28 |
-86:22:43.5 |
HIP 25412 |
3.60 |
| 2026-06-07 12:00 |
05:30:15.08 |
-86:22:41.4 |
HIP 25412 |
3.97 |
| 2026-06-08 00:00 |
05:30:38.90 |
-86:22:39.5 |
HIP 25412 |
4.35 |
| 2026-06-08 12:00 |
05:31:02.74 |
-86:22:37.6 |
HIP 25412 |
4.73 |
| 2026-06-09 00:00 |
05:31:26.59 |
-86:22:35.9 |
HIP 25412 |
5.10 |
| 2026-06-09 12:00 |
05:31:50.46 |
-86:22:34.4 |
HIP 25412 |
5.48 |
| 2026-06-10 00:00 |
05:32:14.34 |
-86:22:33.0 |
HIP 25412 |
5.86 |
| 2026-06-10 12:00 |
05:32:38.23 |
-86:22:31.7 |
HIP 25412 |
6.23 |
| 2026-06-11 00:00 |
05:33:02.14 |
-86:22:30.6 |
HIP 25412 |
6.61 |
| 2026-06-11 12:00 |
05:33:26.06 |
-86:22:29.7 |
HIP 25412 |
6.99 |
| 2026-06-12 00:00 |
05:33:49.98 |
-86:22:28.8 |
HIP 25412 |
7.36 |
| 2026-06-12 12:00 |
05:34:13.92 |
-86:22:28.1 |
HIP 25412 |
7.74 |
| 2026-06-13 00:00 |
05:34:37.87 |
-86:22:27.6 |
HIP 25412 |
8.12 |
| 2026-06-13 12:00 |
05:35:01.82 |
-86:22:27.2 |
HIP 25412 |
8.49 |
| 2026-06-14 00:00 |
05:35:25.78 |
-86:22:27.0 |
HIP 25412 |
8.87 |
| 2026-06-14 12:00 |
05:35:49.74 |
-86:22:26.9 |
HIP 25412 |
9.25 |
| 2026-06-15 00:00 |
05:36:13.71 |
-86:22:26.9 |
HIP 25412 |
9.62 |
| 2026-06-15 12:00 |
05:36:37.69 |
-86:22:27.1 |
HIP 25412 |
10.00 |
| 2026-06-16 00:00 |
05:37:01.66 |
-86:22:27.4 |
HIP 25412 |
10.38 |
| 2026-06-16 12:00 |
05:37:25.64 |
-86:22:27.9 |
HIP 25412 |
10.75 |
| 2026-06-17 00:00 |
05:37:49.62 |
-86:22:28.5 |
HIP 25412 |
11.13 |
| 2026-06-17 12:00 |
05:38:13.59 |
-86:22:29.3 |
HIP 25412 |
11.50 |
| 2026-06-18 00:00 |
05:38:37.57 |
-86:22:30.2 |
HIP 25412 |
11.88 |
| 2026-06-18 12:00 |
05:39:01.54 |
-86:22:31.2 |
HIP 25412 |
12.26 |
| 2026-06-19 00:00 |
05:39:25.50 |
-86:22:32.4 |
HIP 27734 |
12.22 |
| 2026-06-19 12:00 |
05:39:49.47 |
-86:22:33.7 |
HIP 27734 |
11.85 |
| 2026-06-20 00:00 |
05:40:13.42 |
-86:22:35.2 |
HIP 27734 |
11.47 |
| 2026-06-20 12:00 |
05:40:37.37 |
-86:22:36.8 |
HIP 27734 |
11.09 |
| 2026-06-21 00:00 |
05:41:01.32 |
-86:22:38.6 |
HIP 27734 |
10.71 |
| 2026-06-21 12:00 |
05:41:25.25 |
-86:22:40.5 |
HIP 27734 |
10.33 |
| 2026-06-22 00:00 |
05:41:49.18 |
-86:22:42.6 |
HIP 27734 |
9.95 |