메타데이터
| 항목 |
값 |
| Designation |
P/2004 FY140 (LINEAR) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2004-08-06T23:53:38.112000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:39Z |
| Obs used |
52 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2004-05-08.0000000 |
| e |
0.17089421 |
| q (au) |
4.106110 |
| a (au) |
4.952456 |
| i (deg) |
2.127781 |
| Ω (om, deg) |
327.293838 |
| ω (w, deg) |
239.757657 |
| M (ma, deg) |
351.862455 |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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) |
| 2026-07-29 00:00 |
13:20:51.19 |
-10:37:33.6 |
HIP 65093 |
26.74 |
| 2026-07-29 12:00 |
13:21:11.38 |
-10:39:23.7 |
HIP 65093 |
29.93 |
| 2026-07-30 00:00 |
13:21:31.72 |
-10:41:14.5 |
HIP 65093 |
33.67 |
| 2026-07-30 12:00 |
13:21:52.20 |
-10:43:06.2 |
HIP 65093 |
37.83 |
| 2026-07-31 00:00 |
13:22:12.83 |
-10:44:58.7 |
HIP 65093 |
42.30 |
| 2026-07-31 12:00 |
13:22:33.60 |
-10:46:52.0 |
HIP 65474 |
44.99 |
| 2026-08-01 00:00 |
13:22:54.51 |
-10:48:46.0 |
HIP 65474 |
39.61 |
| 2026-08-01 12:00 |
13:23:15.56 |
-10:50:40.9 |
HIP 65474 |
34.23 |
| 2026-08-02 00:00 |
13:23:36.76 |
-10:52:36.5 |
HIP 65474 |
28.86 |
| 2026-08-02 12:00 |
13:23:58.09 |
-10:54:32.9 |
HIP 65474 |
23.54 |
| 2026-08-03 00:00 |
13:24:19.56 |
-10:56:30.1 |
HIP 65474 |
18.35 |
| 2026-08-03 12:00 |
13:24:41.17 |
-10:58:28.1 |
HIP 65474 |
13.47 |
| 2026-08-04 00:00 |
13:25:02.92 |
-11:00:26.7 |
HIP 65474 |
9.47 |
| 2026-08-04 12:00 |
13:25:24.80 |
-11:02:26.2 |
HIP 65474 |
7.93 |
| 2026-08-05 00:00 |
13:25:46.83 |
-11:04:26.4 |
HIP 65474 |
10.10 |
| 2026-08-05 12:00 |
13:26:08.98 |
-11:06:27.3 |
HIP 65474 |
14.44 |
| 2026-08-06 00:00 |
13:26:31.27 |
-11:08:28.9 |
HIP 65474 |
19.58 |
| 2026-08-06 12:00 |
13:26:53.70 |
-11:10:31.3 |
HIP 65474 |
25.05 |
| 2026-08-07 00:00 |
13:27:16.26 |
-11:12:34.3 |
HIP 65474 |
30.71 |
| 2026-08-07 12:00 |
13:27:38.95 |
-11:14:38.1 |
HIP 65474 |
36.47 |
| 2026-08-08 00:00 |
13:28:01.78 |
-11:16:42.6 |
HIP 65849 |
30.63 |
| 2026-08-08 12:00 |
13:28:24.73 |
-11:18:47.8 |
HIP 65849 |
24.66 |
| 2026-08-09 00:00 |
13:28:47.82 |
-11:20:53.7 |
HIP 65849 |
18.67 |
| 2026-08-09 12:00 |
13:29:11.04 |
-11:23:00.3 |
HIP 65849 |
12.68 |
| 2026-08-10 00:00 |
13:29:34.38 |
-11:25:07.5 |
HIP 65849 |
6.83 |
| 2026-08-10 12:00 |
13:29:57.86 |
-11:27:15.5 |
HIP 65849 |
2.61 |
| 2026-08-11 00:00 |
13:30:21.46 |
-11:29:24.0 |
HIP 65849 |
6.53 |
| 2026-08-11 12:00 |
13:30:45.19 |
-11:31:33.3 |
HIP 65849 |
12.46 |
| 2026-08-12 00:00 |
13:31:09.05 |
-11:33:43.2 |
HIP 65849 |
18.60 |
| 2026-08-12 12:00 |
13:31:33.03 |
-11:35:53.7 |
HIP 66018 |
21.95 |
| 2026-08-13 00:00 |
13:31:57.13 |
-11:38:04.9 |
HIP 66018 |
22.79 |
| 2026-08-13 12:00 |
13:32:21.36 |
-11:40:16.7 |
HIP 66018 |
25.24 |
| 2026-08-14 00:00 |
13:32:45.72 |
-11:42:29.1 |
HIP 66216 |
24.79 |
| 2026-08-14 12:00 |
13:33:10.19 |
-11:44:42.2 |
HIP 66216 |
20.74 |
| 2026-08-15 00:00 |
13:33:34.79 |
-11:46:55.8 |
HIP 66216 |
18.09 |
| 2026-08-15 12:00 |
13:33:59.51 |
-11:49:10.1 |
HIP 66216 |
17.52 |
| 2026-08-16 00:00 |
13:34:24.34 |
-11:51:24.9 |
HIP 66216 |
19.25 |
| 2026-08-16 12:00 |
13:34:49.30 |
-11:53:40.3 |
HIP 66216 |
22.78 |
| 2026-08-17 00:00 |
13:35:14.37 |
-11:55:56.3 |
HIP 66216 |
27.44 |
| 2026-08-17 12:00 |
13:35:39.56 |
-11:58:12.8 |
HIP 66216 |
32.78 |
| 2026-08-18 00:00 |
13:36:04.87 |
-12:00:30.0 |
HIP 66453 |
27.03 |
| 2026-08-18 12:00 |
13:36:30.29 |
-12:02:47.6 |
HIP 66453 |
21.21 |
| 2026-08-19 00:00 |
13:36:55.83 |
-12:05:05.8 |
HIP 66453 |
16.02 |