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) |
| 2026-09-20 00:00 |
12:57:02.26 |
-02:37:07.1 |
HIP 63328 |
29.79 |
| 2026-09-20 12:00 |
12:57:22.20 |
-02:39:20.8 |
HIP 63328 |
24.46 |
| 2026-09-21 00:00 |
12:57:42.18 |
-02:41:34.6 |
HIP 63328 |
19.18 |
| 2026-09-21 12:00 |
12:58:02.20 |
-02:43:48.4 |
HIP 63328 |
14.05 |
| 2026-09-22 00:00 |
12:58:22.24 |
-02:46:02.3 |
HIP 63328 |
9.30 |
| 2026-09-22 12:00 |
12:58:42.31 |
-02:48:16.1 |
HIP 63328 |
5.98 |
| 2026-09-23 00:00 |
12:59:02.42 |
-02:50:30.0 |
HIP 63328 |
6.73 |
| 2026-09-23 12:00 |
12:59:22.55 |
-02:52:43.9 |
HIP 63328 |
10.74 |
| 2026-09-24 00:00 |
12:59:42.72 |
-02:54:57.9 |
HIP 63467 |
15.36 |
| 2026-09-24 12:00 |
13:00:02.91 |
-02:57:11.8 |
HIP 63467 |
15.34 |
| 2026-09-25 00:00 |
13:00:23.13 |
-02:59:25.7 |
HIP 63467 |
17.20 |
| 2026-09-25 12:00 |
13:00:43.38 |
-03:01:39.7 |
HIP 63467 |
20.43 |
| 2026-09-26 00:00 |
13:01:03.66 |
-03:03:53.6 |
HIP 63494 |
19.49 |
| 2026-09-26 12:00 |
13:01:23.96 |
-03:06:07.6 |
HIP 63494 |
19.98 |
| 2026-09-27 00:00 |
13:01:44.29 |
-03:08:21.5 |
HIP 63494 |
21.91 |
| 2026-09-27 12:00 |
13:02:04.64 |
-03:10:35.4 |
HIP 63703 |
22.13 |
| 2026-09-28 00:00 |
13:02:25.02 |
-03:12:49.3 |
HIP 63703 |
19.84 |
| 2026-09-28 12:00 |
13:02:45.42 |
-03:15:03.2 |
HIP 63746 |
17.00 |
| 2026-09-29 00:00 |
13:03:05.85 |
-03:17:17.1 |
HIP 63746 |
12.51 |
| 2026-09-29 12:00 |
13:03:26.30 |
-03:19:30.9 |
HIP 63746 |
9.28 |
| 2026-09-30 00:00 |
13:03:46.78 |
-03:21:44.8 |
HIP 63746 |
8.82 |
| 2026-09-30 12:00 |
13:04:07.27 |
-03:23:58.5 |
HIP 63746 |
11.47 |
| 2026-10-01 00:00 |
13:04:27.79 |
-03:26:12.3 |
HIP 63746 |
15.74 |
| 2026-10-01 12:00 |
13:04:48.33 |
-03:28:26.0 |
HIP 63750 |
17.60 |
| 2026-10-02 00:00 |
13:05:08.89 |
-03:30:39.7 |
HIP 63750 |
20.70 |
| 2026-10-02 12:00 |
13:05:29.48 |
-03:32:53.3 |
HIP 63750 |
24.69 |
| 2026-10-03 00:00 |
13:05:50.08 |
-03:35:06.9 |
HIP 63750 |
29.23 |
| 2026-10-03 12:00 |
13:06:10.70 |
-03:37:20.4 |
HIP 63750 |
34.08 |
| 2026-10-04 00:00 |
13:06:31.34 |
-03:39:33.9 |
HIP 63750 |
39.14 |
| 2026-10-04 12:00 |
13:06:52.00 |
-03:41:47.3 |
HIP 63938 |
38.08 |
| 2026-10-05 00:00 |
13:07:12.67 |
-03:44:00.6 |
HIP 63938 |
37.64 |
| 2026-10-05 12:00 |
13:07:33.37 |
-03:46:13.8 |
HIP 63938 |
38.04 |
| 2026-10-06 00:00 |
13:07:54.07 |
-03:48:27.0 |
HIP 64221 |
36.94 |
| 2026-10-06 12:00 |
13:08:14.80 |
-03:50:40.1 |
HIP 64221 |
35.03 |
| 2026-10-07 00:00 |
13:08:35.54 |
-03:52:53.1 |
HIP 64221 |
33.95 |
| 2026-10-07 12:00 |
13:08:56.29 |
-03:55:06.1 |
HIP 64221 |
33.79 |
| 2026-10-08 00:00 |
13:09:17.06 |
-03:57:18.9 |
HIP 64221 |
34.55 |
| 2026-10-08 12:00 |
13:09:37.84 |
-03:59:31.6 |
HIP 64321 |
30.86 |
| 2026-10-09 00:00 |
13:09:58.64 |
-04:01:44.2 |
HIP 64321 |
25.92 |
| 2026-10-09 12:00 |
13:10:19.44 |
-04:03:56.7 |
HIP 64321 |
21.31 |
| 2026-10-10 00:00 |
13:10:40.26 |
-04:06:09.1 |
HIP 64321 |
17.33 |
| 2026-10-10 12:00 |
13:11:01.09 |
-04:08:21.4 |
HIP 64321 |
14.50 |
| 2026-10-11 00:00 |
13:11:21.93 |
-04:10:33.6 |
HIP 64321 |
13.56 |