147P/Kushida-Muramatsu
| Parameter |
Value |
| Designation |
147P/Kushida-Muramatsu |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-09-23T19:01:26.480640Z |
| Orbit solution date (soln_date, UTC) |
2024-11-06T10:50:35Z |
| Obs used |
57 |
| NEO |
- |
| M1 |
13.600 |
| K1 |
11.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2005-10-30.0000000 |
| e |
0.27555443 |
| q (au) |
2.754546 |
| a (au) |
3.802282 |
| i (deg) |
2.368741 |
| Ω (om, deg) |
93.773792 |
| ω (w, deg) |
347.033193 |
| M (ma, deg) |
219.117040 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.842 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.842 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.999 |
| δ90 |
10.000 |
| 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 |
14:06:18.53 |
-10:16:53.2 |
HIP 68921 |
11.74 |
| 2026-02-03 12:00 |
14:06:25.63 |
-10:17:16.4 |
HIP 68921 |
11.67 |
| 2026-02-04 00:00 |
14:06:32.50 |
-10:17:38.3 |
HIP 68921 |
11.86 |
| 2026-02-04 12:00 |
14:06:39.15 |
-10:17:59.0 |
HIP 68921 |
12.26 |
| 2026-02-05 00:00 |
14:06:45.58 |
-10:18:18.6 |
HIP 68993 |
10.76 |
| 2026-02-05 12:00 |
14:06:51.79 |
-10:18:36.9 |
HIP 68993 |
9.21 |
| 2026-02-06 00:00 |
14:06:57.77 |
-10:18:54.0 |
HIP 68993 |
7.72 |
| 2026-02-06 12:00 |
14:07:03.54 |
-10:19:09.9 |
HIP 68993 |
6.29 |
| 2026-02-07 00:00 |
14:07:09.07 |
-10:19:24.7 |
HIP 68993 |
4.92 |
| 2026-02-07 12:00 |
14:07:14.39 |
-10:19:38.2 |
HIP 68993 |
3.62 |
| 2026-02-08 00:00 |
14:07:19.47 |
-10:19:50.5 |
HIP 68993 |
2.40 |
| 2026-02-08 12:00 |
14:07:24.33 |
-10:20:01.5 |
HIP 68993 |
1.32 |
| 2026-02-09 00:00 |
14:07:28.97 |
-10:20:11.4 |
HIP 68993 |
0.77 |
| 2026-02-09 12:00 |
14:07:33.37 |
-10:20:20.1 |
HIP 68993 |
1.40 |
| 2026-02-10 00:00 |
14:07:37.55 |
-10:20:27.5 |
HIP 68993 |
2.33 |
| 2026-02-10 12:00 |
14:07:41.49 |
-10:20:33.7 |
HIP 68993 |
3.26 |
| 2026-02-11 00:00 |
14:07:45.21 |
-10:20:38.7 |
HIP 68993 |
4.15 |
| 2026-02-11 12:00 |
14:07:48.69 |
-10:20:42.5 |
HIP 68993 |
4.99 |
| 2026-02-12 00:00 |
14:07:51.94 |
-10:20:45.0 |
HIP 68993 |
5.78 |
| 2026-02-12 12:00 |
14:07:54.96 |
-10:20:46.3 |
HIP 68993 |
6.51 |
| 2026-02-13 00:00 |
14:07:57.75 |
-10:20:46.4 |
HIP 68993 |
7.18 |
| 2026-02-13 12:00 |
14:08:00.30 |
-10:20:45.3 |
HIP 68993 |
7.80 |
| 2026-02-14 00:00 |
14:08:02.62 |
-10:20:42.9 |
HIP 68993 |
8.35 |
| 2026-02-14 12:00 |
14:08:04.71 |
-10:20:39.3 |
HIP 68993 |
8.85 |
| 2026-02-15 00:00 |
14:08:06.56 |
-10:20:34.5 |
HIP 68993 |
9.29 |
| 2026-02-15 12:00 |
14:08:08.17 |
-10:20:28.5 |
HIP 68993 |
9.67 |
| 2026-02-16 00:00 |
14:08:09.55 |
-10:20:21.2 |
HIP 68993 |
10.00 |
| 2026-02-16 12:00 |
14:08:10.70 |
-10:20:12.7 |
HIP 68993 |
10.27 |
| 2026-02-17 00:00 |
14:08:11.60 |
-10:20:03.0 |
HIP 68993 |
10.48 |
| 2026-02-17 12:00 |
14:08:12.27 |
-10:19:52.1 |
HIP 68993 |
10.63 |
| 2026-02-18 00:00 |
14:08:12.71 |
-10:19:39.9 |
HIP 68993 |
10.73 |
| 2026-02-18 12:00 |
14:08:12.91 |
-10:19:26.6 |
HIP 68993 |
10.78 |
| 2026-02-19 00:00 |
14:08:12.87 |
-10:19:12.0 |
HIP 68993 |
10.77 |
| 2026-02-19 12:00 |
14:08:12.59 |
-10:18:56.2 |
HIP 68993 |
10.71 |
| 2026-02-20 00:00 |
14:08:12.08 |
-10:18:39.1 |
HIP 68993 |
10.60 |
| 2026-02-20 12:00 |
14:08:11.32 |
-10:18:20.9 |
HIP 68993 |
10.45 |
| 2026-02-21 00:00 |
14:08:10.34 |
-10:18:01.5 |
HIP 68993 |
10.24 |
| 2026-02-21 12:00 |
14:08:09.11 |
-10:17:40.8 |
HIP 68993 |
10.00 |
| 2026-02-22 00:00 |
14:08:07.65 |
-10:17:19.0 |
HIP 68993 |
9.72 |
| 2026-02-22 12:00 |
14:08:05.96 |
-10:16:55.9 |
HIP 68993 |
9.41 |
| 2026-02-23 00:00 |
14:08:04.03 |
-10:16:31.7 |
HIP 68993 |
9.07 |
| 2026-02-23 12:00 |
14:08:01.86 |
-10:16:06.3 |
HIP 68993 |
8.72 |
| 2026-02-24 00:00 |
14:07:59.45 |
-10:15:39.7 |
HIP 68993 |
8.36 |