| Parameter |
Value |
| Designation |
59P/Kearns-Kwee |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-03-09T14:55:59.799360Z |
| Orbit solution date (soln_date, UTC) |
2023-01-17T10:14:13Z |
| Obs used |
1270 |
| NEO |
- |
| M1 |
10.400 |
| K1 |
15.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2013-11-04.0000000 |
| e |
0.47637823 |
| q (au) |
2.351607 |
| a (au) |
4.491041 |
| i (deg) |
9.342961 |
| Ω (om, deg) |
312.860215 |
| ω (w, deg) |
127.745466 |
| M (ma, deg) |
176.087692 |
Magnitude
Scatter + Global Linear
$$
M_a = (9.888 + 5.665\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
9.888 |
| n |
5.665 |
| gf |
1.000 |
| gb |
-0.975 |
| k |
1.000 |
| 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) |
| 2026-06-01 00:00 |
22:06:07.01 |
-10:48:11.9 |
HIP 108979 |
21.95 |
| 2026-06-01 12:00 |
22:06:12.87 |
-10:47:06.2 |
HIP 108979 |
23.61 |
| 2026-06-02 00:00 |
22:06:18.55 |
-10:46:01.3 |
HIP 109201 |
24.15 |
| 2026-06-02 12:00 |
22:06:24.04 |
-10:44:57.3 |
HIP 109201 |
22.49 |
| 2026-06-03 00:00 |
22:06:29.34 |
-10:43:54.2 |
HIP 109201 |
20.87 |
| 2026-06-03 12:00 |
22:06:34.46 |
-10:42:52.0 |
HIP 109201 |
19.31 |
| 2026-06-04 00:00 |
22:06:39.39 |
-10:41:50.7 |
HIP 109201 |
17.79 |
| 2026-06-04 12:00 |
22:06:44.13 |
-10:40:50.2 |
HIP 109201 |
16.32 |
| 2026-06-05 00:00 |
22:06:48.68 |
-10:39:50.7 |
HIP 109201 |
14.90 |
| 2026-06-05 12:00 |
22:06:53.04 |
-10:38:52.1 |
HIP 109201 |
13.54 |
| 2026-06-06 00:00 |
22:06:57.21 |
-10:37:54.3 |
HIP 109201 |
12.22 |
| 2026-06-06 12:00 |
22:07:01.19 |
-10:36:57.5 |
HIP 109201 |
10.97 |
| 2026-06-07 00:00 |
22:07:04.97 |
-10:36:01.7 |
HIP 109201 |
9.76 |
| 2026-06-07 12:00 |
22:07:08.56 |
-10:35:06.7 |
HIP 109201 |
8.62 |
| 2026-06-08 00:00 |
22:07:11.96 |
-10:34:12.7 |
HIP 109201 |
7.55 |
| 2026-06-08 12:00 |
22:07:15.16 |
-10:33:19.6 |
HIP 109201 |
6.55 |
| 2026-06-09 00:00 |
22:07:18.16 |
-10:32:27.5 |
HIP 109201 |
5.65 |
| 2026-06-09 12:00 |
22:07:20.97 |
-10:31:36.3 |
HIP 109201 |
4.84 |
| 2026-06-10 00:00 |
22:07:23.57 |
-10:30:46.1 |
HIP 109201 |
4.18 |
| 2026-06-10 12:00 |
22:07:25.98 |
-10:29:56.8 |
HIP 109201 |
3.68 |
| 2026-06-11 00:00 |
22:07:28.19 |
-10:29:08.5 |
HIP 109201 |
3.40 |
| 2026-06-11 12:00 |
22:07:30.20 |
-10:28:21.1 |
HIP 109201 |
3.35 |
| 2026-06-12 00:00 |
22:07:32.01 |
-10:27:34.8 |
HIP 109201 |
3.50 |
| 2026-06-12 12:00 |
22:07:33.62 |
-10:26:49.4 |
HIP 109201 |
3.81 |
| 2026-06-13 00:00 |
22:07:35.02 |
-10:26:05.0 |
HIP 109201 |
4.22 |
| 2026-06-13 12:00 |
22:07:36.22 |
-10:25:21.6 |
HIP 109201 |
4.68 |
| 2026-06-14 00:00 |
22:07:37.22 |
-10:24:39.2 |
HIP 109201 |
5.17 |
| 2026-06-14 12:00 |
22:07:38.01 |
-10:23:57.8 |
HIP 109201 |
5.66 |
| 2026-06-15 00:00 |
22:07:38.59 |
-10:23:17.4 |
HIP 109201 |
6.15 |
| 2026-06-15 12:00 |
22:07:38.98 |
-10:22:38.0 |
HIP 109201 |
6.62 |
| 2026-06-16 00:00 |
22:07:39.15 |
-10:21:59.6 |
HIP 109201 |
7.07 |
| 2026-06-16 12:00 |
22:07:39.12 |
-10:21:22.3 |
HIP 109201 |
7.50 |
| 2026-06-17 00:00 |
22:07:38.88 |
-10:20:45.9 |
HIP 109201 |
7.92 |
| 2026-06-17 12:00 |
22:07:38.44 |
-10:20:10.6 |
HIP 109201 |
8.31 |
| 2026-06-18 00:00 |
22:07:37.78 |
-10:19:36.2 |
HIP 109201 |
8.68 |
| 2026-06-18 12:00 |
22:07:36.92 |
-10:19:02.9 |
HIP 109201 |
9.04 |
| 2026-06-19 00:00 |
22:07:35.86 |
-10:18:30.6 |
HIP 109201 |
9.38 |
| 2026-06-19 12:00 |
22:07:34.58 |
-10:17:59.4 |
HIP 109201 |
9.71 |
| 2026-06-20 00:00 |
22:07:33.09 |
-10:17:29.1 |
HIP 109201 |
10.03 |
| 2026-06-20 12:00 |
22:07:31.40 |
-10:17:00.0 |
HIP 109201 |
10.34 |
| 2026-06-21 00:00 |
22:07:29.50 |
-10:16:31.7 |
HIP 109201 |
10.66 |
| 2026-06-21 12:00 |
22:07:27.39 |
-10:16:04.6 |
HIP 109201 |
10.98 |
| 2026-06-22 00:00 |
22:07:25.07 |
-10:15:38.4 |
HIP 109201 |
11.30 |