C/2005 X1 (Beshore)
| 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 |
0.892 |
| 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) |
| 2026-02-03 00:00 |
05:51:38.45 |
-63:53:52.2 |
HIP 27660 |
8.32 |
| 2026-02-03 12:00 |
05:51:33.38 |
-63:53:21.7 |
HIP 27660 |
8.73 |
| 2026-02-04 00:00 |
05:51:28.35 |
-63:52:50.9 |
HIP 27660 |
9.19 |
| 2026-02-04 12:00 |
05:51:23.36 |
-63:52:19.8 |
HIP 27660 |
9.69 |
| 2026-02-05 00:00 |
05:51:18.43 |
-63:51:48.4 |
HIP 27660 |
10.22 |
| 2026-02-05 12:00 |
05:51:13.54 |
-63:51:16.7 |
HIP 27660 |
10.79 |
| 2026-02-06 00:00 |
05:51:08.70 |
-63:50:44.8 |
HIP 27660 |
11.38 |
| 2026-02-06 12:00 |
05:51:03.91 |
-63:50:12.6 |
HIP 27660 |
11.99 |
| 2026-02-07 00:00 |
05:50:59.17 |
-63:49:40.1 |
HIP 27660 |
12.62 |
| 2026-02-07 12:00 |
05:50:54.48 |
-63:49:07.4 |
HIP 27660 |
13.27 |
| 2026-02-08 00:00 |
05:50:49.83 |
-63:48:34.4 |
HIP 27596 |
13.80 |
| 2026-02-08 12:00 |
05:50:45.24 |
-63:48:01.1 |
HIP 27596 |
13.19 |
| 2026-02-09 00:00 |
05:50:40.70 |
-63:47:27.6 |
HIP 27596 |
12.61 |
| 2026-02-09 12:00 |
05:50:36.21 |
-63:46:53.9 |
HIP 27596 |
12.03 |
| 2026-02-10 00:00 |
05:50:31.77 |
-63:46:19.9 |
HIP 27596 |
11.47 |
| 2026-02-10 12:00 |
05:50:27.38 |
-63:45:45.6 |
HIP 27596 |
10.93 |
| 2026-02-11 00:00 |
05:50:23.05 |
-63:45:11.1 |
HIP 27596 |
10.41 |
| 2026-02-11 12:00 |
05:50:18.76 |
-63:44:36.4 |
HIP 27596 |
9.92 |
| 2026-02-12 00:00 |
05:50:14.53 |
-63:44:01.4 |
HIP 27596 |
9.45 |
| 2026-02-12 12:00 |
05:50:10.35 |
-63:43:26.2 |
HIP 27596 |
9.02 |
| 2026-02-13 00:00 |
05:50:06.23 |
-63:42:50.8 |
HIP 27596 |
8.62 |
| 2026-02-13 12:00 |
05:50:02.15 |
-63:42:15.1 |
HIP 27596 |
8.27 |
| 2026-02-14 00:00 |
05:49:58.14 |
-63:41:39.2 |
HIP 27596 |
7.96 |
| 2026-02-14 12:00 |
05:49:54.17 |
-63:41:03.1 |
HIP 27596 |
7.71 |
| 2026-02-15 00:00 |
05:49:50.26 |
-63:40:26.8 |
HIP 27596 |
7.52 |
| 2026-02-15 12:00 |
05:49:46.40 |
-63:39:50.2 |
HIP 27596 |
7.39 |
| 2026-02-16 00:00 |
05:49:42.60 |
-63:39:13.5 |
HIP 27596 |
7.33 |
| 2026-02-16 12:00 |
05:49:38.85 |
-63:38:36.5 |
HIP 27596 |
7.34 |
| 2026-02-17 00:00 |
05:49:35.16 |
-63:37:59.4 |
HIP 27596 |
7.41 |
| 2026-02-17 12:00 |
05:49:31.52 |
-63:37:22.0 |
HIP 27596 |
7.55 |
| 2026-02-18 00:00 |
05:49:27.94 |
-63:36:44.5 |
HIP 27596 |
7.76 |
| 2026-02-18 12:00 |
05:49:24.41 |
-63:36:06.7 |
HIP 27596 |
8.02 |
| 2026-02-19 00:00 |
05:49:20.94 |
-63:35:28.8 |
HIP 27596 |
8.33 |
| 2026-02-19 12:00 |
05:49:17.52 |
-63:34:50.7 |
HIP 27596 |
8.69 |
| 2026-02-20 00:00 |
05:49:14.17 |
-63:34:12.4 |
HIP 27596 |
9.09 |
| 2026-02-20 12:00 |
05:49:10.86 |
-63:33:33.9 |
HIP 27596 |
9.52 |
| 2026-02-21 00:00 |
05:49:07.62 |
-63:32:55.2 |
HIP 27596 |
9.99 |
| 2026-02-21 12:00 |
05:49:04.43 |
-63:32:16.4 |
HIP 27596 |
10.48 |
| 2026-02-22 00:00 |
05:49:01.30 |
-63:31:37.4 |
HIP 27596 |
10.99 |
| 2026-02-22 12:00 |
05:48:58.22 |
-63:30:58.3 |
HIP 27596 |
11.53 |
| 2026-02-23 00:00 |
05:48:55.21 |
-63:30:19.0 |
HIP 27596 |
12.08 |
| 2026-02-23 12:00 |
05:48:52.24 |
-63:29:39.5 |
HIP 27596 |
12.64 |
| 2026-02-24 00:00 |
05:48:49.34 |
-63:28:59.9 |
HIP 27596 |
13.22 |