| Parameter |
Value |
| Designation |
124P/Mrkos |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-04-09T18:30:28.154880Z |
| Orbit solution date (soln_date, UTC) |
2026-05-28T12:12:24Z |
| Obs used |
3409 |
| NEO |
- |
| M1 |
16.500 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2016-03-20.0000000 |
| e |
0.50400928 |
| q (au) |
1.645821 |
| a (au) |
3.318250 |
| i (deg) |
31.532560 |
| Ω (om, deg) |
0.402133 |
| ω (w, deg) |
183.771212 |
| M (ma, deg) |
115.808028 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.678 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.678 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-0.729 |
| k |
0.953 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
09:37:47.62 |
+17:44:16.2 |
HIP 47274 |
23.29 |
| 2026-06-01 12:00 |
09:38:38.80 |
+17:31:16.7 |
HIP 47375 |
7.73 |
| 2026-06-02 00:00 |
09:39:30.06 |
+17:18:17.8 |
HIP 47375 |
11.07 |
| 2026-06-02 12:00 |
09:40:21.39 |
+17:05:19.5 |
HIP 47455 |
7.24 |
| 2026-06-03 00:00 |
09:41:12.80 |
+16:52:21.8 |
HIP 47455 |
12.86 |
| 2026-06-03 12:00 |
09:42:04.28 |
+16:39:24.7 |
HIP 47598 |
25.75 |
| 2026-06-04 00:00 |
09:42:55.82 |
+16:26:28.2 |
HIP 47784 |
23.67 |
| 2026-06-04 12:00 |
09:43:47.44 |
+16:13:32.3 |
HIP 47784 |
15.93 |
| 2026-06-05 00:00 |
09:44:39.13 |
+16:00:36.9 |
HIP 47784 |
24.23 |
| 2026-06-05 12:00 |
09:45:30.88 |
+15:47:42.2 |
HIP 48006 |
28.45 |
| 2026-06-06 00:00 |
09:46:22.71 |
+15:34:48.0 |
HIP 48006 |
11.48 |
| 2026-06-06 12:00 |
09:47:14.60 |
+15:21:54.5 |
HIP 48006 |
9.90 |
| 2026-06-07 00:00 |
09:48:06.56 |
+15:09:01.5 |
HIP 48177 |
19.73 |
| 2026-06-07 12:00 |
09:48:58.59 |
+14:56:09.1 |
HIP 48177 |
3.65 |
| 2026-06-08 00:00 |
09:49:50.69 |
+14:43:17.2 |
HIP 48169 |
12.74 |
| 2026-06-08 12:00 |
09:50:42.85 |
+14:30:25.9 |
HIP 48410 |
21.40 |
| 2026-06-09 00:00 |
09:51:35.08 |
+14:17:35.3 |
HIP 48410 |
14.33 |
| 2026-06-09 12:00 |
09:52:27.38 |
+14:04:45.1 |
HIP 48300 |
23.63 |
| 2026-06-10 00:00 |
09:53:19.74 |
+13:51:55.6 |
HIP 48579 |
17.20 |
| 2026-06-10 12:00 |
09:54:12.17 |
+13:39:06.6 |
HIP 48579 |
9.87 |
| 2026-06-11 00:00 |
09:55:04.66 |
+13:26:18.1 |
HIP 48579 |
23.48 |
| 2026-06-11 12:00 |
09:55:57.22 |
+13:13:30.3 |
HIP 48825 |
33.66 |
| 2026-06-12 00:00 |
09:56:49.84 |
+13:00:43.0 |
HIP 48825 |
38.05 |
| 2026-06-12 12:00 |
09:57:42.53 |
+12:47:56.2 |
HIP 48883 |
22.54 |
| 2026-06-13 00:00 |
09:58:35.28 |
+12:35:10.0 |
HIP 48883 |
10.02 |
| 2026-06-13 12:00 |
09:59:28.09 |
+12:22:24.4 |
HIP 48883 |
18.74 |
| 2026-06-14 00:00 |
10:00:20.97 |
+12:09:39.3 |
HIP 49158 |
23.75 |
| 2026-06-14 12:00 |
10:01:13.91 |
+11:56:54.8 |
HIP 49158 |
20.58 |
| 2026-06-15 00:00 |
10:02:06.92 |
+11:44:10.8 |
HIP 49328 |
30.43 |
| 2026-06-15 12:00 |
10:02:59.98 |
+11:31:27.4 |
HIP 49328 |
17.88 |
| 2026-06-16 00:00 |
10:03:53.11 |
+11:18:44.5 |
HIP 49328 |
19.33 |
| 2026-06-16 12:00 |
10:04:46.30 |
+11:06:02.2 |
HIP 49379 |
28.79 |
| 2026-06-17 00:00 |
10:05:39.55 |
+10:53:20.5 |
HIP 49379 |
19.64 |
| 2026-06-17 12:00 |
10:06:32.85 |
+10:40:39.3 |
HIP 49379 |
24.66 |
| 2026-06-18 00:00 |
10:07:26.22 |
+10:27:58.7 |
HIP 49637 |
28.96 |
| 2026-06-18 12:00 |
10:08:19.64 |
+10:15:18.6 |
HIP 49637 |
16.66 |
| 2026-06-19 00:00 |
10:09:13.13 |
+10:02:39.1 |
HIP 49637 |
19.60 |
| 2026-06-19 12:00 |
10:10:06.67 |
+09:50:00.2 |
HIP 49766 |
16.83 |
| 2026-06-20 00:00 |
10:11:00.26 |
+09:37:21.9 |
HIP 49766 |
21.96 |
| 2026-06-20 12:00 |
10:11:53.92 |
+09:24:44.1 |
HIP 50054 |
21.69 |
| 2026-06-21 00:00 |
10:12:47.63 |
+09:12:06.9 |
HIP 50081 |
10.50 |
| 2026-06-21 12:00 |
10:13:41.39 |
+08:59:30.3 |
HIP 50081 |
11.99 |
| 2026-06-22 00:00 |
10:14:35.21 |
+08:46:54.2 |
HIP 50172 |
9.86 |