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) |
| 2026-05-12 00:00 |
10:30:59.66 |
-02:16:04.2 |
HIP 51409 |
14.91 |
| 2026-05-12 12:00 |
10:31:04.20 |
-02:15:21.4 |
HIP 51409 |
15.85 |
| 2026-05-13 00:00 |
10:31:08.94 |
-02:14:39.8 |
HIP 51409 |
16.90 |
| 2026-05-13 12:00 |
10:31:13.87 |
-02:13:59.4 |
HIP 51409 |
18.04 |
| 2026-05-14 00:00 |
10:31:18.98 |
-02:13:20.1 |
HIP 51409 |
19.26 |
| 2026-05-14 12:00 |
10:31:24.28 |
-02:12:42.0 |
HIP 51409 |
20.56 |
| 2026-05-15 00:00 |
10:31:29.76 |
-02:12:05.1 |
HIP 51584 |
19.55 |
| 2026-05-15 12:00 |
10:31:35.43 |
-02:11:29.4 |
HIP 51584 |
18.30 |
| 2026-05-16 00:00 |
10:31:41.28 |
-02:10:54.8 |
HIP 51584 |
17.11 |
| 2026-05-16 12:00 |
10:31:47.32 |
-02:10:21.4 |
HIP 51584 |
15.98 |
| 2026-05-17 00:00 |
10:31:53.54 |
-02:09:49.2 |
HIP 51584 |
14.94 |
| 2026-05-17 12:00 |
10:31:59.95 |
-02:09:18.2 |
HIP 51584 |
14.03 |
| 2026-05-18 00:00 |
10:32:06.54 |
-02:08:48.3 |
HIP 51584 |
13.29 |
| 2026-05-18 12:00 |
10:32:13.30 |
-02:08:19.7 |
HIP 51584 |
12.75 |
| 2026-05-19 00:00 |
10:32:20.25 |
-02:07:52.2 |
HIP 51584 |
12.48 |
| 2026-05-19 12:00 |
10:32:27.38 |
-02:07:25.9 |
HIP 51584 |
12.49 |
| 2026-05-20 00:00 |
10:32:34.68 |
-02:07:00.9 |
HIP 51584 |
12.80 |
| 2026-05-20 12:00 |
10:32:42.17 |
-02:06:37.0 |
HIP 51584 |
13.41 |
| 2026-05-21 00:00 |
10:32:49.83 |
-02:06:14.3 |
HIP 51584 |
14.30 |
| 2026-05-21 12:00 |
10:32:57.67 |
-02:05:52.7 |
HIP 51584 |
15.43 |
| 2026-05-22 00:00 |
10:33:05.68 |
-02:05:32.4 |
HIP 51584 |
16.77 |
| 2026-05-22 12:00 |
10:33:13.86 |
-02:05:13.3 |
HIP 51584 |
18.29 |
| 2026-05-23 00:00 |
10:33:22.22 |
-02:04:55.3 |
HIP 51584 |
19.95 |
| 2026-05-23 12:00 |
10:33:30.75 |
-02:04:38.5 |
HIP 51584 |
21.74 |
| 2026-05-24 00:00 |
10:33:39.45 |
-02:04:23.0 |
HIP 51584 |
23.63 |
| 2026-05-24 12:00 |
10:33:48.32 |
-02:04:08.6 |
HIP 51584 |
25.62 |
| 2026-05-25 00:00 |
10:33:57.36 |
-02:03:55.3 |
HIP 51584 |
27.69 |
| 2026-05-25 12:00 |
10:34:06.57 |
-02:03:43.3 |
HIP 51872 |
26.40 |
| 2026-05-26 00:00 |
10:34:15.95 |
-02:03:32.4 |
HIP 51872 |
24.06 |
| 2026-05-26 12:00 |
10:34:25.49 |
-02:03:22.7 |
HIP 51872 |
21.67 |
| 2026-05-27 00:00 |
10:34:35.20 |
-02:03:14.2 |
HIP 51872 |
19.25 |
| 2026-05-27 12:00 |
10:34:45.07 |
-02:03:06.9 |
HIP 51872 |
16.78 |
| 2026-05-28 00:00 |
10:34:55.10 |
-02:03:00.7 |
HIP 51872 |
14.27 |
| 2026-05-28 12:00 |
10:35:05.30 |
-02:02:55.7 |
HIP 51872 |
11.73 |
| 2026-05-29 00:00 |
10:35:15.66 |
-02:02:51.9 |
HIP 51872 |
9.14 |
| 2026-05-29 12:00 |
10:35:26.18 |
-02:02:49.2 |
HIP 51872 |
6.52 |
| 2026-05-30 00:00 |
10:35:36.86 |
-02:02:47.7 |
HIP 51872 |
3.86 |
| 2026-05-30 12:00 |
10:35:47.69 |
-02:02:47.3 |
HIP 51872 |
1.20 |
| 2026-05-31 00:00 |
10:35:58.69 |
-02:02:48.1 |
HIP 51872 |
1.66 |
| 2026-05-31 12:00 |
10:36:09.84 |
-02:02:50.1 |
HIP 51872 |
4.41 |
| 2026-06-01 00:00 |
10:36:21.15 |
-02:02:53.2 |
HIP 51872 |
7.23 |
| 2026-06-01 12:00 |
10:36:32.61 |
-02:02:57.4 |
HIP 51872 |
10.09 |
| 2026-06-02 00:00 |
10:36:44.23 |
-02:03:02.9 |
HIP 51872 |
12.99 |