| Parameter |
Value |
| Designation |
C/2005 X1 (Beshore) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-07-05T18:12:30.124800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:55Z |
| Obs used |
102 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2006-01-06.0000000 |
| e |
0.99573052 |
| q (au) |
2.862145 |
| a (au) |
670.372938 |
| i (deg) |
91.941447 |
| Ω (om, deg) |
302.797830 |
| ω (w, deg) |
117.784661 |
| M (ma, deg) |
0.010462 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.972 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.972 |
| n |
2.000 |
| gf |
0.894 |
| gb |
-0.500 |
| k |
0.944 |
| δ90 |
1.000 |
| 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) |
| 2026-09-20 00:00 |
06:11:42.52 |
-63:03:05.5 |
HIP 29331 |
14.07 |
| 2026-09-20 12:00 |
06:11:42.84 |
-63:03:51.6 |
HIP 29331 |
13.35 |
| 2026-09-21 00:00 |
06:11:43.10 |
-63:04:37.8 |
HIP 29331 |
12.64 |
| 2026-09-21 12:00 |
06:11:43.31 |
-63:05:23.9 |
HIP 29331 |
11.93 |
| 2026-09-22 00:00 |
06:11:43.46 |
-63:06:10.1 |
HIP 29331 |
11.23 |
| 2026-09-22 12:00 |
06:11:43.55 |
-63:06:56.3 |
HIP 29331 |
10.53 |
| 2026-09-23 00:00 |
06:11:43.60 |
-63:07:42.5 |
HIP 29331 |
9.84 |
| 2026-09-23 12:00 |
06:11:43.58 |
-63:08:28.8 |
HIP 29331 |
9.16 |
| 2026-09-24 00:00 |
06:11:43.51 |
-63:09:15.0 |
HIP 29331 |
8.50 |
| 2026-09-24 12:00 |
06:11:43.38 |
-63:10:01.3 |
HIP 29331 |
7.84 |
| 2026-09-25 00:00 |
06:11:43.20 |
-63:10:47.5 |
HIP 29331 |
7.21 |
| 2026-09-25 12:00 |
06:11:42.97 |
-63:11:33.8 |
HIP 29331 |
6.61 |
| 2026-09-26 00:00 |
06:11:42.67 |
-63:12:20.1 |
HIP 29331 |
6.03 |
| 2026-09-26 12:00 |
06:11:42.32 |
-63:13:06.4 |
HIP 29331 |
5.50 |
| 2026-09-27 00:00 |
06:11:41.92 |
-63:13:52.6 |
HIP 29331 |
5.03 |
| 2026-09-27 12:00 |
06:11:41.46 |
-63:14:38.9 |
HIP 29331 |
4.64 |
| 2026-09-28 00:00 |
06:11:40.94 |
-63:15:25.1 |
HIP 29331 |
4.34 |
| 2026-09-28 12:00 |
06:11:40.37 |
-63:16:11.3 |
HIP 29331 |
4.15 |
| 2026-09-29 00:00 |
06:11:39.74 |
-63:16:57.5 |
HIP 29331 |
4.11 |
| 2026-09-29 12:00 |
06:11:39.05 |
-63:17:43.7 |
HIP 29331 |
4.20 |
| 2026-09-30 00:00 |
06:11:38.31 |
-63:18:29.9 |
HIP 29331 |
4.42 |
| 2026-09-30 12:00 |
06:11:37.51 |
-63:19:16.0 |
HIP 29331 |
4.75 |
| 2026-10-01 00:00 |
06:11:36.66 |
-63:20:02.1 |
HIP 29331 |
5.17 |
| 2026-10-01 12:00 |
06:11:35.75 |
-63:20:48.2 |
HIP 29331 |
5.66 |
| 2026-10-02 00:00 |
06:11:34.78 |
-63:21:34.2 |
HIP 29331 |
6.21 |
| 2026-10-02 12:00 |
06:11:33.75 |
-63:22:20.2 |
HIP 29331 |
6.80 |
| 2026-10-03 00:00 |
06:11:32.67 |
-63:23:06.2 |
HIP 29331 |
7.41 |
| 2026-10-03 12:00 |
06:11:31.53 |
-63:23:52.1 |
HIP 29331 |
8.06 |
| 2026-10-04 00:00 |
06:11:30.33 |
-63:24:37.9 |
HIP 29331 |
8.72 |
| 2026-10-04 12:00 |
06:11:29.08 |
-63:25:23.7 |
HIP 29331 |
9.39 |
| 2026-10-05 00:00 |
06:11:27.77 |
-63:26:09.5 |
HIP 29331 |
10.08 |
| 2026-10-05 12:00 |
06:11:26.40 |
-63:26:55.2 |
HIP 29331 |
10.78 |
| 2026-10-06 00:00 |
06:11:24.98 |
-63:27:40.8 |
HIP 29331 |
11.48 |
| 2026-10-06 12:00 |
06:11:23.49 |
-63:28:26.3 |
HIP 29331 |
12.20 |
| 2026-10-07 00:00 |
06:11:21.95 |
-63:29:11.8 |
HIP 29331 |
12.91 |
| 2026-10-07 12:00 |
06:11:20.36 |
-63:29:57.2 |
HIP 29331 |
13.63 |
| 2026-10-08 00:00 |
06:11:18.70 |
-63:30:42.6 |
HIP 29331 |
14.36 |
| 2026-10-08 12:00 |
06:11:16.99 |
-63:31:27.8 |
HIP 29331 |
15.09 |
| 2026-10-09 00:00 |
06:11:15.22 |
-63:32:13.0 |
HIP 29331 |
15.82 |
| 2026-10-09 12:00 |
06:11:13.40 |
-63:32:58.1 |
HIP 29331 |
16.55 |
| 2026-10-10 00:00 |
06:11:11.51 |
-63:33:43.0 |
HIP 29331 |
17.29 |
| 2026-10-10 12:00 |
06:11:09.57 |
-63:34:27.9 |
HIP 29331 |
18.03 |
| 2026-10-11 00:00 |
06:11:07.57 |
-63:35:12.7 |
HIP 29331 |
18.77 |