| 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) |
| 2026-05-12 00:00 |
21:59:50.63 |
-11:42:53.1 |
HIP 108516 |
28.52 |
| 2026-05-12 12:00 |
22:00:03.20 |
-11:41:16.9 |
HIP 108703 |
26.68 |
| 2026-05-13 00:00 |
22:00:15.63 |
-11:39:41.4 |
HIP 108703 |
23.56 |
| 2026-05-13 12:00 |
22:00:27.90 |
-11:38:06.5 |
HIP 108703 |
20.57 |
| 2026-05-14 00:00 |
22:00:40.02 |
-11:36:32.3 |
HIP 108703 |
17.76 |
| 2026-05-14 12:00 |
22:00:51.98 |
-11:34:58.8 |
HIP 108703 |
15.19 |
| 2026-05-15 00:00 |
22:01:03.79 |
-11:33:26.0 |
HIP 108703 |
12.98 |
| 2026-05-15 12:00 |
22:01:15.44 |
-11:31:53.8 |
HIP 108703 |
11.31 |
| 2026-05-16 00:00 |
22:01:26.94 |
-11:30:22.3 |
HIP 108703 |
10.42 |
| 2026-05-16 12:00 |
22:01:38.28 |
-11:28:51.5 |
HIP 108703 |
10.45 |
| 2026-05-17 00:00 |
22:01:49.46 |
-11:27:21.5 |
HIP 108703 |
11.38 |
| 2026-05-17 12:00 |
22:02:00.48 |
-11:25:52.1 |
HIP 108703 |
12.98 |
| 2026-05-18 00:00 |
22:02:11.34 |
-11:24:23.4 |
HIP 108703 |
15.01 |
| 2026-05-18 12:00 |
22:02:22.04 |
-11:22:55.5 |
HIP 108703 |
17.31 |
| 2026-05-19 00:00 |
22:02:32.57 |
-11:21:28.3 |
HIP 108703 |
19.75 |
| 2026-05-19 12:00 |
22:02:42.95 |
-11:20:01.8 |
HIP 108703 |
22.29 |
| 2026-05-20 00:00 |
22:02:53.16 |
-11:18:36.1 |
HIP 108703 |
24.86 |
| 2026-05-20 12:00 |
22:03:03.20 |
-11:17:11.1 |
HIP 108703 |
27.46 |
| 2026-05-21 00:00 |
22:03:13.08 |
-11:15:46.8 |
HIP 108703 |
30.06 |
| 2026-05-21 12:00 |
22:03:22.79 |
-11:14:23.3 |
HIP 108979 |
28.50 |
| 2026-05-22 00:00 |
22:03:32.34 |
-11:13:00.6 |
HIP 108979 |
25.92 |
| 2026-05-22 12:00 |
22:03:41.72 |
-11:11:38.6 |
HIP 108979 |
23.42 |
| 2026-05-23 00:00 |
22:03:50.93 |
-11:10:17.4 |
HIP 108979 |
20.99 |
| 2026-05-23 12:00 |
22:03:59.97 |
-11:08:56.9 |
HIP 108979 |
18.66 |
| 2026-05-24 00:00 |
22:04:08.84 |
-11:07:37.2 |
HIP 108979 |
16.42 |
| 2026-05-24 12:00 |
22:04:17.54 |
-11:06:18.3 |
HIP 108979 |
14.33 |
| 2026-05-25 00:00 |
22:04:26.06 |
-11:05:00.2 |
HIP 108979 |
12.41 |
| 2026-05-25 12:00 |
22:04:34.42 |
-11:03:42.9 |
HIP 108979 |
10.73 |
| 2026-05-26 00:00 |
22:04:42.60 |
-11:02:26.4 |
HIP 108979 |
9.40 |
| 2026-05-26 12:00 |
22:04:50.61 |
-11:01:10.7 |
HIP 108979 |
8.54 |
| 2026-05-27 00:00 |
22:04:58.45 |
-10:59:55.7 |
HIP 108979 |
8.25 |
| 2026-05-27 12:00 |
22:05:06.11 |
-10:58:41.6 |
HIP 108979 |
8.56 |
| 2026-05-28 00:00 |
22:05:13.59 |
-10:57:28.3 |
HIP 108979 |
9.39 |
| 2026-05-28 12:00 |
22:05:20.89 |
-10:56:15.9 |
HIP 108979 |
10.58 |
| 2026-05-29 00:00 |
22:05:28.02 |
-10:55:04.2 |
HIP 108979 |
12.00 |
| 2026-05-29 12:00 |
22:05:34.97 |
-10:53:53.4 |
HIP 108979 |
13.56 |
| 2026-05-30 00:00 |
22:05:41.74 |
-10:52:43.4 |
HIP 108979 |
15.20 |
| 2026-05-30 12:00 |
22:05:48.33 |
-10:51:34.3 |
HIP 108979 |
16.88 |
| 2026-05-31 00:00 |
22:05:54.74 |
-10:50:26.0 |
HIP 108979 |
18.58 |
| 2026-05-31 12:00 |
22:06:00.97 |
-10:49:18.5 |
HIP 108979 |
20.27 |
| 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 |