| 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) |
| 2026-07-29 00:00 |
06:06:38.51 |
-61:54:23.3 |
HIP 28869 |
11.58 |
| 2026-07-29 12:00 |
06:06:43.39 |
-61:54:50.5 |
HIP 28869 |
12.28 |
| 2026-07-30 00:00 |
06:06:48.24 |
-61:55:18.1 |
HIP 28869 |
12.99 |
| 2026-07-30 12:00 |
06:06:53.06 |
-61:55:45.9 |
HIP 28991 |
13.55 |
| 2026-07-31 00:00 |
06:06:57.86 |
-61:56:14.0 |
HIP 28991 |
13.05 |
| 2026-07-31 12:00 |
06:07:02.62 |
-61:56:42.4 |
HIP 28991 |
12.56 |
| 2026-08-01 00:00 |
06:07:07.36 |
-61:57:11.1 |
HIP 28991 |
12.09 |
| 2026-08-01 12:00 |
06:07:12.07 |
-61:57:40.1 |
HIP 28991 |
11.64 |
| 2026-08-02 00:00 |
06:07:16.75 |
-61:58:09.3 |
HIP 28991 |
11.22 |
| 2026-08-02 12:00 |
06:07:21.39 |
-61:58:38.9 |
HIP 28991 |
10.82 |
| 2026-08-03 00:00 |
06:07:26.01 |
-61:59:08.7 |
HIP 28991 |
10.46 |
| 2026-08-03 12:00 |
06:07:30.60 |
-61:59:38.8 |
HIP 28991 |
10.13 |
| 2026-08-04 00:00 |
06:07:35.16 |
-62:00:09.1 |
HIP 28991 |
9.84 |
| 2026-08-04 12:00 |
06:07:39.69 |
-62:00:39.8 |
HIP 28991 |
9.60 |
| 2026-08-05 00:00 |
06:07:44.18 |
-62:01:10.7 |
HIP 28991 |
9.39 |
| 2026-08-05 12:00 |
06:07:48.65 |
-62:01:41.9 |
HIP 28991 |
9.24 |
| 2026-08-06 00:00 |
06:07:53.08 |
-62:02:13.3 |
HIP 28991 |
9.13 |
| 2026-08-06 12:00 |
06:07:57.48 |
-62:02:45.0 |
HIP 28991 |
9.08 |
| 2026-08-07 00:00 |
06:08:01.84 |
-62:03:17.0 |
HIP 28991 |
9.09 |
| 2026-08-07 12:00 |
06:08:06.18 |
-62:03:49.3 |
HIP 28991 |
9.14 |
| 2026-08-08 00:00 |
06:08:10.48 |
-62:04:21.8 |
HIP 28991 |
9.25 |
| 2026-08-08 12:00 |
06:08:14.74 |
-62:04:54.5 |
HIP 28991 |
9.41 |
| 2026-08-09 00:00 |
06:08:18.98 |
-62:05:27.6 |
HIP 28991 |
9.62 |
| 2026-08-09 12:00 |
06:08:23.17 |
-62:06:00.9 |
HIP 28991 |
9.88 |
| 2026-08-10 00:00 |
06:08:27.34 |
-62:06:34.4 |
HIP 28991 |
10.18 |
| 2026-08-10 12:00 |
06:08:31.46 |
-62:07:08.2 |
HIP 28991 |
10.51 |
| 2026-08-11 00:00 |
06:08:35.55 |
-62:07:42.2 |
HIP 28991 |
10.88 |
| 2026-08-11 12:00 |
06:08:39.61 |
-62:08:16.5 |
HIP 28991 |
11.29 |
| 2026-08-12 00:00 |
06:08:43.63 |
-62:08:51.1 |
HIP 28991 |
11.72 |
| 2026-08-12 12:00 |
06:08:47.61 |
-62:09:25.9 |
HIP 28991 |
12.17 |
| 2026-08-13 00:00 |
06:08:51.56 |
-62:10:00.9 |
HIP 28991 |
12.65 |
| 2026-08-13 12:00 |
06:08:55.47 |
-62:10:36.1 |
HIP 28991 |
13.15 |
| 2026-08-14 00:00 |
06:08:59.34 |
-62:11:11.7 |
HIP 28991 |
13.67 |
| 2026-08-14 12:00 |
06:09:03.17 |
-62:11:47.4 |
HIP 28991 |
14.21 |
| 2026-08-15 00:00 |
06:09:06.97 |
-62:12:23.4 |
HIP 28991 |
14.76 |
| 2026-08-15 12:00 |
06:09:10.72 |
-62:12:59.6 |
HIP 28991 |
15.32 |
| 2026-08-16 00:00 |
06:09:14.44 |
-62:13:36.0 |
HIP 28991 |
15.89 |
| 2026-08-16 12:00 |
06:09:18.12 |
-62:14:12.7 |
HIP 28991 |
16.47 |
| 2026-08-17 00:00 |
06:09:21.75 |
-62:14:49.5 |
HIP 28991 |
17.07 |
| 2026-08-17 12:00 |
06:09:25.35 |
-62:15:26.6 |
HIP 28991 |
17.67 |
| 2026-08-18 00:00 |
06:09:28.91 |
-62:16:04.0 |
HIP 28991 |
18.28 |
| 2026-08-18 12:00 |
06:09:32.43 |
-62:16:41.5 |
HIP 28991 |
18.89 |
| 2026-08-19 00:00 |
06:09:35.91 |
-62:17:19.2 |
HIP 28991 |
19.51 |