메타데이터
| 항목 |
값 |
| Designation |
404P/Bressi |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-10-24T23:24:20.805120Z |
| Orbit solution date (soln_date, UTC) |
2026-03-17T15:12:47Z |
| Obs used |
785 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
10.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-08-30.0000000 |
| e |
0.13286937 |
| q (au) |
4.135875 |
| a (au) |
4.769611 |
| i (deg) |
9.738129 |
| Ω (om, deg) |
260.353617 |
| ω (w, deg) |
167.853131 |
| M (ma, deg) |
320.167622 |
밝기
산란 + 전체 선형
$$
M_a = (6.654 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.654 |
| n |
6.000 |
| gf |
0.910 |
| gb |
-0.772 |
| k |
0.998 |
| δ90 |
4.806 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
10:38:12.36 |
-04:32:51.8 |
HIP 51930 |
30.61 |
| 2026-03-26 12:00 |
10:37:59.52 |
-04:30:58.1 |
HIP 51930 |
29.18 |
| 2026-03-27 00:00 |
10:37:46.82 |
-04:29:04.4 |
HIP 51930 |
28.19 |
| 2026-03-27 12:00 |
10:37:34.25 |
-04:27:10.9 |
HIP 51930 |
27.68 |
| 2026-03-28 00:00 |
10:37:21.83 |
-04:25:17.4 |
HIP 51864 |
26.27 |
| 2026-03-28 12:00 |
10:37:09.56 |
-04:23:24.1 |
HIP 51864 |
24.51 |
| 2026-03-29 00:00 |
10:36:57.43 |
-04:21:30.9 |
HIP 51864 |
23.22 |
| 2026-03-29 12:00 |
10:36:45.45 |
-04:19:37.9 |
HIP 51864 |
22.44 |
| 2026-03-30 00:00 |
10:36:33.62 |
-04:17:45.0 |
HIP 51864 |
22.21 |
| 2026-03-30 12:00 |
10:36:21.94 |
-04:15:52.4 |
HIP 51864 |
22.55 |
| 2026-03-31 00:00 |
10:36:10.42 |
-04:14:00.0 |
HIP 51864 |
23.40 |
| 2026-03-31 12:00 |
10:35:59.05 |
-04:12:07.8 |
HIP 51864 |
24.71 |
| 2026-04-01 00:00 |
10:35:47.84 |
-04:10:15.9 |
HIP 51784 |
21.73 |
| 2026-04-01 12:00 |
10:35:36.79 |
-04:08:24.2 |
HIP 51784 |
18.54 |
| 2026-04-02 00:00 |
10:35:25.90 |
-04:06:32.9 |
HIP 51784 |
15.42 |
| 2026-04-02 12:00 |
10:35:15.17 |
-04:04:41.8 |
HIP 51784 |
12.41 |
| 2026-04-03 00:00 |
10:35:04.60 |
-04:02:51.1 |
HIP 51784 |
9.59 |
| 2026-04-03 12:00 |
10:34:54.20 |
-04:01:00.8 |
HIP 51784 |
7.12 |
| 2026-04-04 00:00 |
10:34:43.97 |
-03:59:10.8 |
HIP 51784 |
5.45 |
| 2026-04-04 12:00 |
10:34:33.90 |
-03:57:21.1 |
HIP 51784 |
5.30 |
| 2026-04-05 00:00 |
10:34:24.00 |
-03:55:31.9 |
HIP 51784 |
6.72 |
| 2026-04-05 12:00 |
10:34:14.28 |
-03:53:43.1 |
HIP 51784 |
8.97 |
| 2026-04-06 00:00 |
10:34:04.73 |
-03:51:54.8 |
HIP 51745 |
10.84 |
| 2026-04-06 12:00 |
10:33:55.34 |
-03:50:06.8 |
HIP 51745 |
10.34 |
| 2026-04-07 00:00 |
10:33:46.14 |
-03:48:19.4 |
HIP 51745 |
10.64 |
| 2026-04-07 12:00 |
10:33:37.11 |
-03:46:32.4 |
HIP 51745 |
11.65 |
| 2026-04-08 00:00 |
10:33:28.26 |
-03:44:46.0 |
HIP 51745 |
13.17 |
| 2026-04-08 12:00 |
10:33:19.59 |
-03:43:00.0 |
HIP 51745 |
15.04 |
| 2026-04-09 00:00 |
10:33:11.09 |
-03:41:14.6 |
HIP 51745 |
17.11 |
| 2026-04-09 12:00 |
10:33:02.78 |
-03:39:29.8 |
HIP 51745 |
19.31 |
| 2026-04-10 00:00 |
10:32:54.65 |
-03:37:45.5 |
HIP 51745 |
21.57 |
| 2026-04-10 12:00 |
10:32:46.70 |
-03:36:01.8 |
HIP 51527 |
21.89 |
| 2026-04-11 00:00 |
10:32:38.94 |
-03:34:18.7 |
HIP 51527 |
20.91 |
| 2026-04-11 12:00 |
10:32:31.37 |
-03:32:36.3 |
HIP 51527 |
20.25 |
| 2026-04-12 00:00 |
10:32:23.98 |
-03:30:54.4 |
HIP 51527 |
19.92 |
| 2026-04-12 12:00 |
10:32:16.77 |
-03:29:13.2 |
HIP 51527 |
19.93 |
| 2026-04-13 00:00 |
10:32:09.76 |
-03:27:32.7 |
HIP 51527 |
20.26 |
| 2026-04-13 12:00 |
10:32:02.93 |
-03:25:52.8 |
HIP 51527 |
20.87 |
| 2026-04-14 00:00 |
10:31:56.30 |
-03:24:13.7 |
HIP 51527 |
21.74 |
| 2026-04-14 12:00 |
10:31:49.86 |
-03:22:35.3 |
HIP 51527 |
22.81 |
| 2026-04-15 00:00 |
10:31:43.61 |
-03:20:57.5 |
HIP 51527 |
24.05 |
| 2026-04-15 12:00 |
10:31:37.55 |
-03:19:20.6 |
HIP 51527 |
25.43 |
| 2026-04-16 00:00 |
10:31:31.69 |
-03:17:44.3 |
HIP 51535 |
25.75 |