| Parameter |
Value |
| 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 Elements
| Parameter |
Value |
| 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 |
Magnitude
Scatter + Global Linear
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| Parameter |
Symbol |
Range |
Description |
| Absolute magnitude at 1 AU from Sun and Earth |
H0 |
-5 to 20 |
Intrinsic brightness of the comet |
| Photometric slope parameter |
n |
2 to 6 |
Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor |
gf |
0.8 to 1 |
Degree of forward scattering |
| Backward scattering asymmetry factor |
gb |
-1 to -0.5 |
Degree of backward scattering |
| Partitioning coefficient |
k |
0.8 to 1 |
Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio |
δ90 |
1 to 10 |
Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
13:02:15.65 |
-09:06:26.7 |
HIP 63486 |
26.19 |
| 2026-06-01 12:00 |
13:02:13.22 |
-09:06:01.8 |
HIP 63486 |
25.59 |
| 2026-06-02 00:00 |
13:02:11.02 |
-09:05:38.3 |
HIP 63486 |
25.05 |
| 2026-06-02 12:00 |
13:02:09.05 |
-09:05:16.0 |
HIP 63486 |
24.57 |
| 2026-06-03 00:00 |
13:02:07.29 |
-09:04:55.1 |
HIP 63486 |
24.16 |
| 2026-06-03 12:00 |
13:02:05.77 |
-09:04:35.4 |
HIP 63486 |
23.80 |
| 2026-06-04 00:00 |
13:02:04.46 |
-09:04:17.1 |
HIP 63486 |
23.50 |
| 2026-06-04 12:00 |
13:02:03.38 |
-09:04:00.0 |
HIP 63486 |
23.25 |
| 2026-06-05 00:00 |
13:02:02.53 |
-09:03:44.3 |
HIP 63486 |
23.07 |
| 2026-06-05 12:00 |
13:02:01.90 |
-09:03:29.9 |
HIP 63486 |
22.94 |
| 2026-06-06 00:00 |
13:02:01.49 |
-09:03:16.8 |
HIP 63486 |
22.86 |
| 2026-06-06 12:00 |
13:02:01.31 |
-09:03:05.0 |
HIP 63486 |
22.84 |
| 2026-06-07 00:00 |
13:02:01.35 |
-09:02:54.6 |
HIP 63486 |
22.88 |
| 2026-06-07 12:00 |
13:02:01.61 |
-09:02:45.5 |
HIP 63486 |
22.96 |
| 2026-06-08 00:00 |
13:02:02.11 |
-09:02:37.7 |
HIP 63486 |
23.10 |
| 2026-06-08 12:00 |
13:02:02.82 |
-09:02:31.2 |
HIP 63486 |
23.29 |
| 2026-06-09 00:00 |
13:02:03.76 |
-09:02:26.0 |
HIP 63486 |
23.53 |
| 2026-06-09 12:00 |
13:02:04.92 |
-09:02:22.2 |
HIP 63486 |
23.83 |
| 2026-06-10 00:00 |
13:02:06.31 |
-09:02:19.7 |
HIP 63486 |
24.17 |
| 2026-06-10 12:00 |
13:02:07.92 |
-09:02:18.6 |
HIP 63486 |
24.57 |
| 2026-06-11 00:00 |
13:02:09.75 |
-09:02:18.7 |
HIP 63486 |
25.01 |
| 2026-06-11 12:00 |
13:02:11.81 |
-09:02:20.2 |
HIP 63486 |
25.51 |
| 2026-06-12 00:00 |
13:02:14.09 |
-09:02:23.1 |
HIP 63486 |
26.06 |
| 2026-06-12 12:00 |
13:02:16.60 |
-09:02:27.3 |
HIP 63486 |
26.67 |
| 2026-06-13 00:00 |
13:02:19.33 |
-09:02:32.8 |
HIP 63486 |
27.32 |
| 2026-06-13 12:00 |
13:02:22.28 |
-09:02:39.6 |
HIP 63486 |
28.03 |
| 2026-06-14 00:00 |
13:02:25.45 |
-09:02:47.8 |
HIP 63486 |
28.79 |
| 2026-06-14 12:00 |
13:02:28.85 |
-09:02:57.4 |
HIP 63486 |
29.61 |
| 2026-06-15 00:00 |
13:02:32.47 |
-09:03:08.2 |
HIP 63486 |
30.48 |
| 2026-06-15 12:00 |
13:02:36.31 |
-09:03:20.4 |
HIP 63486 |
31.41 |
| 2026-06-16 00:00 |
13:02:40.37 |
-09:03:34.0 |
HIP 63486 |
32.39 |
| 2026-06-16 12:00 |
13:02:44.65 |
-09:03:48.8 |
HIP 63486 |
33.43 |
| 2026-06-17 00:00 |
13:02:49.15 |
-09:04:05.0 |
HIP 63486 |
34.52 |
| 2026-06-17 12:00 |
13:02:53.88 |
-09:04:22.6 |
HIP 63486 |
35.67 |
| 2026-06-18 00:00 |
13:02:58.82 |
-09:04:41.4 |
HIP 63486 |
36.87 |
| 2026-06-18 12:00 |
13:03:03.98 |
-09:05:01.6 |
HIP 63486 |
38.14 |
| 2026-06-19 00:00 |
13:03:09.36 |
-09:05:23.1 |
HIP 63818 |
39.38 |
| 2026-06-19 12:00 |
13:03:14.96 |
-09:05:45.9 |
HIP 63818 |
38.85 |
| 2026-06-20 00:00 |
13:03:20.77 |
-09:06:10.0 |
HIP 63818 |
38.36 |
| 2026-06-20 12:00 |
13:03:26.80 |
-09:06:35.4 |
HIP 63818 |
37.92 |
| 2026-06-21 00:00 |
13:03:33.04 |
-09:07:02.1 |
HIP 63818 |
37.52 |
| 2026-06-21 12:00 |
13:03:39.50 |
-09:07:30.1 |
HIP 63818 |
37.19 |
| 2026-06-22 00:00 |
13:03:46.16 |
-09:07:59.4 |
HIP 63818 |
36.93 |