D/1978 R1 (Haneda-Campos)
メタデータ
| 項目 |
値 |
| Designation |
D/1978 R1 (Haneda-Campos) |
| Type |
D |
| Perihelion (tp_cal, UTC) |
1978-10-09T11:47:52.676160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:27Z |
| Obs used |
62 |
| NEO |
Yes |
| M1 |
12.800 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1978-09-22.0000000 |
| e |
0.66523727 |
| q (au) |
1.101419 |
| a (au) |
3.290148 |
| i (deg) |
5.947352 |
| Ω (om, deg) |
132.253410 |
| ω (w, deg) |
240.462250 |
| M (ma, deg) |
357.111249 |
等級
散乱 + 全体線形
$$
M_a = (17.164 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.164 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.839 |
| k |
0.800 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
13:05:48.27 |
-01:53:41.0 |
HIP 64000 |
16.35 |
| 2026-02-03 12:00 |
13:05:43.95 |
-01:52:51.7 |
HIP 64000 |
17.47 |
| 2026-02-04 00:00 |
13:05:39.45 |
-01:52:01.4 |
HIP 64000 |
18.68 |
| 2026-02-04 12:00 |
13:05:34.78 |
-01:51:10.1 |
HIP 63781 |
19.48 |
| 2026-02-05 00:00 |
13:05:29.91 |
-01:50:17.6 |
HIP 63781 |
18.72 |
| 2026-02-05 12:00 |
13:05:24.87 |
-01:49:24.1 |
HIP 63781 |
18.02 |
| 2026-02-06 00:00 |
13:05:19.64 |
-01:48:29.6 |
HIP 63781 |
17.41 |
| 2026-02-06 12:00 |
13:05:14.23 |
-01:47:34.0 |
HIP 63781 |
16.89 |
| 2026-02-07 00:00 |
13:05:08.64 |
-01:46:37.3 |
HIP 63781 |
16.51 |
| 2026-02-07 12:00 |
13:05:02.87 |
-01:45:39.6 |
HIP 63781 |
16.28 |
| 2026-02-08 00:00 |
13:04:56.91 |
-01:44:40.9 |
HIP 63781 |
16.22 |
| 2026-02-08 12:00 |
13:04:50.78 |
-01:43:41.1 |
HIP 63781 |
16.35 |
| 2026-02-09 00:00 |
13:04:44.46 |
-01:42:40.3 |
HIP 63781 |
16.68 |
| 2026-02-09 12:00 |
13:04:37.96 |
-01:41:38.5 |
HIP 63781 |
17.22 |
| 2026-02-10 00:00 |
13:04:31.28 |
-01:40:35.7 |
HIP 63781 |
17.97 |
| 2026-02-10 12:00 |
13:04:24.42 |
-01:39:31.8 |
HIP 63781 |
18.90 |
| 2026-02-11 00:00 |
13:04:17.38 |
-01:38:26.9 |
HIP 63781 |
20.01 |
| 2026-02-11 12:00 |
13:04:10.16 |
-01:37:21.0 |
HIP 63670 |
19.51 |
| 2026-02-12 00:00 |
13:04:02.76 |
-01:36:14.1 |
HIP 63670 |
17.39 |
| 2026-02-12 12:00 |
13:03:55.18 |
-01:35:06.3 |
HIP 63670 |
15.24 |
| 2026-02-13 00:00 |
13:03:47.43 |
-01:33:57.4 |
HIP 63670 |
13.05 |
| 2026-02-13 12:00 |
13:03:39.50 |
-01:32:47.6 |
HIP 63670 |
10.84 |
| 2026-02-14 00:00 |
13:03:31.39 |
-01:31:36.7 |
HIP 63670 |
8.64 |
| 2026-02-14 12:00 |
13:03:23.10 |
-01:30:25.0 |
HIP 63670 |
6.49 |
| 2026-02-15 00:00 |
13:03:14.64 |
-01:29:12.2 |
HIP 63670 |
4.54 |
| 2026-02-15 12:00 |
13:03:06.01 |
-01:27:58.5 |
HIP 63670 |
3.31 |
| 2026-02-16 00:00 |
13:02:57.20 |
-01:26:43.9 |
HIP 63670 |
3.71 |
| 2026-02-16 12:00 |
13:02:48.22 |
-01:25:28.3 |
HIP 63670 |
5.44 |
| 2026-02-17 00:00 |
13:02:39.06 |
-01:24:11.8 |
HIP 63670 |
7.70 |
| 2026-02-17 12:00 |
13:02:29.74 |
-01:22:54.4 |
HIP 63670 |
10.18 |
| 2026-02-18 00:00 |
13:02:20.24 |
-01:21:36.1 |
HIP 63670 |
12.77 |
| 2026-02-18 12:00 |
13:02:10.57 |
-01:20:16.9 |
HIP 63670 |
15.45 |
| 2026-02-19 00:00 |
13:02:00.74 |
-01:18:56.8 |
HIP 63670 |
18.19 |
| 2026-02-19 12:00 |
13:01:50.74 |
-01:17:35.8 |
HIP 63670 |
20.98 |
| 2026-02-20 00:00 |
13:01:40.57 |
-01:16:13.9 |
HIP 63453 |
23.77 |
| 2026-02-20 12:00 |
13:01:30.24 |
-01:14:51.2 |
HIP 63453 |
20.97 |
| 2026-02-21 00:00 |
13:01:19.74 |
-01:13:27.6 |
HIP 63453 |
18.16 |
| 2026-02-21 12:00 |
13:01:09.08 |
-01:12:03.2 |
HIP 63453 |
15.38 |
| 2026-02-22 00:00 |
13:00:58.26 |
-01:10:38.0 |
HIP 63453 |
12.66 |
| 2026-02-22 12:00 |
13:00:47.28 |
-01:09:11.9 |
HIP 63453 |
10.10 |
| 2026-02-23 00:00 |
13:00:36.14 |
-01:07:45.1 |
HIP 63453 |
7.89 |
| 2026-02-23 12:00 |
13:00:24.84 |
-01:06:17.5 |
HIP 63453 |
6.49 |
| 2026-02-24 00:00 |
13:00:13.39 |
-01:04:49.0 |
HIP 63453 |
6.50 |