404P/Bressi
메타데이터
| 항목 |
값 |
| Designation |
404P/Bressi |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-10-23T03:21:18.884160Z |
| Orbit solution date (soln_date, UTC) |
2025-04-11T14:45:16Z |
| Obs used |
767 |
| NEO |
- |
| M1 |
10.300 |
| K1 |
9.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-07-26.0000000 |
| e |
0.13335388 |
| q (au) |
4.136781 |
| a (au) |
4.773322 |
| i (deg) |
9.732683 |
| Ω (om, deg) |
260.423194 |
| ω (w, deg) |
167.565382 |
| M (ma, deg) |
317.079727 |
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 |
4.805 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
11:03:39.62 |
-06:47:44.9 |
HIP 53995 |
27.56 |
| 2026-02-03 12:00 |
11:03:27.71 |
-06:47:28.3 |
HIP 53995 |
26.00 |
| 2026-02-04 00:00 |
11:03:15.64 |
-06:47:10.1 |
HIP 53995 |
24.67 |
| 2026-02-04 12:00 |
11:03:03.42 |
-06:46:50.3 |
HIP 53995 |
23.62 |
| 2026-02-05 00:00 |
11:02:51.06 |
-06:46:29.0 |
HIP 53995 |
22.90 |
| 2026-02-05 12:00 |
11:02:38.55 |
-06:46:06.1 |
HIP 53995 |
22.56 |
| 2026-02-06 00:00 |
11:02:25.90 |
-06:45:41.6 |
HIP 53995 |
22.63 |
| 2026-02-06 12:00 |
11:02:13.11 |
-06:45:15.5 |
HIP 53995 |
23.13 |
| 2026-02-07 00:00 |
11:02:00.18 |
-06:44:47.8 |
HIP 53995 |
24.04 |
| 2026-02-07 12:00 |
11:01:47.11 |
-06:44:18.6 |
HIP 53995 |
25.34 |
| 2026-02-08 00:00 |
11:01:33.91 |
-06:43:47.8 |
HIP 53995 |
26.97 |
| 2026-02-08 12:00 |
11:01:20.58 |
-06:43:15.5 |
HIP 53995 |
28.91 |
| 2026-02-09 00:00 |
11:01:07.11 |
-06:42:41.6 |
HIP 53995 |
31.09 |
| 2026-02-09 12:00 |
11:00:53.52 |
-06:42:06.2 |
HIP 53995 |
33.49 |
| 2026-02-10 00:00 |
11:00:39.81 |
-06:41:29.2 |
HIP 53639 |
33.68 |
| 2026-02-10 12:00 |
11:00:25.97 |
-06:40:50.7 |
HIP 53639 |
30.32 |
| 2026-02-11 00:00 |
11:00:12.01 |
-06:40:10.6 |
HIP 53639 |
26.97 |
| 2026-02-11 12:00 |
10:59:57.94 |
-06:39:29.0 |
HIP 53639 |
23.65 |
| 2026-02-12 00:00 |
10:59:43.75 |
-06:38:45.9 |
HIP 53639 |
20.40 |
| 2026-02-12 12:00 |
10:59:29.44 |
-06:38:01.3 |
HIP 53639 |
17.26 |
| 2026-02-13 00:00 |
10:59:15.03 |
-06:37:15.2 |
HIP 53639 |
14.33 |
| 2026-02-13 12:00 |
10:59:00.51 |
-06:36:27.6 |
HIP 53639 |
11.83 |
| 2026-02-14 00:00 |
10:58:45.89 |
-06:35:38.6 |
HIP 53639 |
10.08 |
| 2026-02-14 12:00 |
10:58:31.17 |
-06:34:48.0 |
HIP 53639 |
9.57 |
| 2026-02-15 00:00 |
10:58:16.34 |
-06:33:56.0 |
HIP 53639 |
10.50 |
| 2026-02-15 12:00 |
10:58:01.42 |
-06:33:02.5 |
HIP 53639 |
12.58 |
| 2026-02-16 00:00 |
10:57:46.41 |
-06:32:07.6 |
HIP 53529 |
10.01 |
| 2026-02-16 12:00 |
10:57:31.31 |
-06:31:11.3 |
HIP 53529 |
6.14 |
| 2026-02-17 00:00 |
10:57:16.13 |
-06:30:13.5 |
HIP 53529 |
2.25 |
| 2026-02-17 12:00 |
10:57:00.86 |
-06:29:14.4 |
HIP 53529 |
1.69 |
| 2026-02-18 00:00 |
10:56:45.50 |
-06:28:13.8 |
HIP 53529 |
5.62 |
| 2026-02-18 12:00 |
10:56:30.08 |
-06:27:11.9 |
HIP 53529 |
9.59 |
| 2026-02-19 00:00 |
10:56:14.57 |
-06:26:08.6 |
HIP 53529 |
13.59 |
| 2026-02-19 12:00 |
10:55:59.00 |
-06:25:03.9 |
HIP 53529 |
17.60 |
| 2026-02-20 00:00 |
10:55:43.36 |
-06:23:57.9 |
HIP 53529 |
21.64 |
| 2026-02-20 12:00 |
10:55:27.65 |
-06:22:50.6 |
HIP 53529 |
25.70 |
| 2026-02-21 00:00 |
10:55:11.88 |
-06:21:41.9 |
HIP 53309 |
26.64 |
| 2026-02-21 12:00 |
10:54:56.06 |
-06:20:32.0 |
HIP 53309 |
25.71 |
| 2026-02-22 00:00 |
10:54:40.18 |
-06:19:20.8 |
HIP 53309 |
25.42 |
| 2026-02-22 12:00 |
10:54:24.24 |
-06:18:08.3 |
HIP 53309 |
25.82 |
| 2026-02-23 00:00 |
10:54:08.26 |
-06:16:54.6 |
HIP 53309 |
26.88 |
| 2026-02-23 12:00 |
10:53:52.23 |
-06:15:39.6 |
HIP 53309 |
28.54 |
| 2026-02-24 00:00 |
10:53:36.17 |
-06:14:23.5 |
HIP 53309 |
30.69 |