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) |
| 2026-03-26 00:00 |
13:30:53.52 |
-11:55:00.6 |
HIP 65849 |
29.05 |
| 2026-03-26 12:00 |
13:30:38.77 |
-11:53:49.9 |
HIP 65849 |
26.37 |
| 2026-03-27 00:00 |
13:30:23.90 |
-11:52:38.3 |
HIP 65849 |
23.96 |
| 2026-03-27 12:00 |
13:30:08.91 |
-11:51:25.7 |
HIP 65849 |
21.94 |
| 2026-03-28 00:00 |
13:29:53.80 |
-11:50:12.3 |
HIP 65849 |
20.45 |
| 2026-03-28 12:00 |
13:29:38.59 |
-11:48:57.9 |
HIP 65849 |
19.62 |
| 2026-03-29 00:00 |
13:29:23.26 |
-11:47:42.7 |
HIP 65849 |
19.55 |
| 2026-03-29 12:00 |
13:29:07.83 |
-11:46:26.7 |
HIP 65849 |
20.27 |
| 2026-03-30 00:00 |
13:28:52.30 |
-11:45:09.8 |
HIP 65849 |
21.73 |
| 2026-03-30 12:00 |
13:28:36.67 |
-11:43:52.1 |
HIP 65849 |
23.78 |
| 2026-03-31 00:00 |
13:28:20.95 |
-11:42:33.6 |
HIP 65849 |
26.32 |
| 2026-03-31 12:00 |
13:28:05.13 |
-11:41:14.3 |
HIP 65849 |
29.22 |
| 2026-04-01 00:00 |
13:27:49.22 |
-11:39:54.2 |
HIP 65849 |
32.40 |
| 2026-04-01 12:00 |
13:27:33.23 |
-11:38:33.4 |
HIP 65849 |
35.79 |
| 2026-04-02 00:00 |
13:27:17.16 |
-11:37:11.9 |
HIP 65849 |
39.33 |
| 2026-04-02 12:00 |
13:27:01.01 |
-11:35:49.6 |
HIP 65474 |
37.46 |
| 2026-04-03 00:00 |
13:26:44.78 |
-11:34:26.6 |
HIP 65474 |
33.69 |
| 2026-04-03 12:00 |
13:26:28.49 |
-11:33:03.0 |
HIP 65474 |
30.02 |
| 2026-04-04 00:00 |
13:26:12.12 |
-11:31:38.7 |
HIP 65474 |
26.51 |
| 2026-04-04 12:00 |
13:25:55.69 |
-11:30:13.7 |
HIP 65474 |
23.22 |
| 2026-04-05 00:00 |
13:25:39.20 |
-11:28:48.1 |
HIP 65474 |
20.29 |
| 2026-04-05 12:00 |
13:25:22.66 |
-11:27:21.9 |
HIP 65474 |
17.90 |
| 2026-04-06 00:00 |
13:25:06.06 |
-11:25:55.1 |
HIP 65474 |
16.30 |
| 2026-04-06 12:00 |
13:24:49.41 |
-11:24:27.8 |
HIP 65474 |
15.76 |
| 2026-04-07 00:00 |
13:24:32.71 |
-11:22:59.9 |
HIP 65474 |
16.38 |
| 2026-04-07 12:00 |
13:24:15.97 |
-11:21:31.4 |
HIP 65474 |
18.07 |
| 2026-04-08 00:00 |
13:23:59.19 |
-11:20:02.5 |
HIP 65474 |
20.56 |
| 2026-04-08 12:00 |
13:23:42.38 |
-11:18:33.1 |
HIP 65474 |
23.61 |
| 2026-04-09 00:00 |
13:23:25.54 |
-11:17:03.2 |
HIP 65474 |
27.04 |
| 2026-04-09 12:00 |
13:23:08.67 |
-11:15:32.8 |
HIP 65474 |
30.71 |
| 2026-04-10 00:00 |
13:22:51.77 |
-11:14:02.0 |
HIP 65122 |
33.62 |
| 2026-04-10 12:00 |
13:22:34.85 |
-11:12:30.8 |
HIP 65122 |
30.54 |
| 2026-04-11 00:00 |
13:22:17.92 |
-11:10:59.2 |
HIP 65122 |
27.81 |
| 2026-04-11 12:00 |
13:22:00.98 |
-11:09:27.3 |
HIP 65122 |
25.56 |
| 2026-04-12 00:00 |
13:21:44.02 |
-11:07:55.0 |
HIP 65074 |
23.04 |
| 2026-04-12 12:00 |
13:21:27.07 |
-11:06:22.4 |
HIP 65074 |
20.27 |
| 2026-04-13 00:00 |
13:21:10.11 |
-11:04:49.5 |
HIP 65074 |
18.19 |
| 2026-04-13 12:00 |
13:20:53.15 |
-11:03:16.4 |
HIP 65074 |
17.03 |
| 2026-04-14 00:00 |
13:20:36.20 |
-11:01:42.9 |
HIP 65074 |
17.00 |
| 2026-04-14 12:00 |
13:20:19.26 |
-11:00:09.3 |
HIP 65004 |
15.62 |
| 2026-04-15 00:00 |
13:20:02.34 |
-10:58:35.5 |
HIP 65004 |
13.55 |
| 2026-04-15 12:00 |
13:19:45.44 |
-10:57:01.4 |
HIP 65004 |
12.75 |
| 2026-04-16 00:00 |
13:19:28.56 |
-10:55:27.3 |
HIP 65004 |
13.46 |