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) |
| 2026-03-26 00:00 |
12:45:04.64 |
+00:39:16.1 |
HIP 62168 |
12.09 |
| 2026-03-26 12:00 |
12:44:47.12 |
+00:41:06.3 |
HIP 62168 |
10.43 |
| 2026-03-27 00:00 |
12:44:29.57 |
+00:42:56.2 |
HIP 62168 |
10.78 |
| 2026-03-27 12:00 |
12:44:12.01 |
+00:44:46.0 |
HIP 62168 |
13.00 |
| 2026-03-28 00:00 |
12:43:54.42 |
+00:46:35.6 |
HIP 62168 |
16.34 |
| 2026-03-28 12:00 |
12:43:36.81 |
+00:48:25.0 |
HIP 62168 |
20.26 |
| 2026-03-29 00:00 |
12:43:19.19 |
+00:50:14.2 |
HIP 62168 |
24.48 |
| 2026-03-29 12:00 |
12:43:01.55 |
+00:52:03.2 |
HIP 61977 |
26.70 |
| 2026-03-30 00:00 |
12:42:43.90 |
+00:53:51.9 |
HIP 62005 |
26.15 |
| 2026-03-30 12:00 |
12:42:26.24 |
+00:55:40.3 |
HIP 62005 |
24.09 |
| 2026-03-31 00:00 |
12:42:08.58 |
+00:57:28.5 |
HIP 62005 |
22.86 |
| 2026-03-31 12:00 |
12:41:50.91 |
+00:59:16.3 |
HIP 62005 |
22.60 |
| 2026-04-01 00:00 |
12:41:33.25 |
+01:01:03.9 |
HIP 61865 |
21.06 |
| 2026-04-01 12:00 |
12:41:15.58 |
+01:02:51.1 |
HIP 61865 |
17.16 |
| 2026-04-02 00:00 |
12:40:57.92 |
+01:04:37.9 |
HIP 61865 |
13.81 |
| 2026-04-02 12:00 |
12:40:40.26 |
+01:06:24.4 |
HIP 61865 |
11.52 |
| 2026-04-03 00:00 |
12:40:22.62 |
+01:08:10.6 |
HIP 61865 |
10.94 |
| 2026-04-03 12:00 |
12:40:04.98 |
+01:09:56.3 |
HIP 61865 |
12.33 |
| 2026-04-04 00:00 |
12:39:47.36 |
+01:11:41.6 |
HIP 61760 |
10.98 |
| 2026-04-04 12:00 |
12:39:29.76 |
+01:13:26.5 |
HIP 61760 |
11.49 |
| 2026-04-05 00:00 |
12:39:12.17 |
+01:15:11.0 |
HIP 61760 |
13.71 |
| 2026-04-05 12:00 |
12:38:54.61 |
+01:16:55.0 |
HIP 61760 |
16.97 |
| 2026-04-06 00:00 |
12:38:37.07 |
+01:18:38.5 |
HIP 61760 |
20.80 |
| 2026-04-06 12:00 |
12:38:19.56 |
+01:20:21.6 |
HIP 61760 |
24.92 |
| 2026-04-07 00:00 |
12:38:02.08 |
+01:22:04.1 |
HIP 61760 |
29.20 |
| 2026-04-07 12:00 |
12:37:44.63 |
+01:23:46.2 |
HIP 61658 |
29.09 |
| 2026-04-08 00:00 |
12:37:27.21 |
+01:25:27.7 |
HIP 61529 |
28.01 |
| 2026-04-08 12:00 |
12:37:09.83 |
+01:27:08.7 |
HIP 61529 |
27.23 |
| 2026-04-09 00:00 |
12:36:52.48 |
+01:28:49.1 |
HIP 61529 |
27.22 |
| 2026-04-09 12:00 |
12:36:35.18 |
+01:30:28.9 |
HIP 61529 |
27.99 |
| 2026-04-10 00:00 |
12:36:17.93 |
+01:32:08.1 |
HIP 61529 |
29.46 |
| 2026-04-10 12:00 |
12:36:00.72 |
+01:33:46.8 |
HIP 61529 |
31.54 |
| 2026-04-11 00:00 |
12:35:43.56 |
+01:35:24.8 |
HIP 61529 |
34.10 |
| 2026-04-11 12:00 |
12:35:26.45 |
+01:37:02.2 |
HIP 61529 |
37.04 |
| 2026-04-12 00:00 |
12:35:09.39 |
+01:38:38.9 |
HIP 61428 |
37.04 |
| 2026-04-12 12:00 |
12:34:52.39 |
+01:40:15.0 |
HIP 61428 |
35.89 |
| 2026-04-13 00:00 |
12:34:35.45 |
+01:41:50.4 |
HIP 61428 |
35.30 |
| 2026-04-13 12:00 |
12:34:18.57 |
+01:43:25.1 |
HIP 61428 |
35.28 |
| 2026-04-14 00:00 |
12:34:01.76 |
+01:44:59.1 |
HIP 61428 |
35.84 |
| 2026-04-14 12:00 |
12:33:45.01 |
+01:46:32.4 |
HIP 61428 |
36.94 |
| 2026-04-15 00:00 |
12:33:28.33 |
+01:48:05.0 |
HIP 61428 |
38.52 |
| 2026-04-15 12:00 |
12:33:11.72 |
+01:49:36.8 |
HIP 61096 |
40.38 |
| 2026-04-16 00:00 |
12:32:55.18 |
+01:51:07.8 |
HIP 61096 |
36.43 |