| Parameter |
Value |
| Designation |
C/1952 W1 (Mrkos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1953-01-24T20:37:26.682240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:10Z |
| Obs used |
6 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1953-05-04.0000000 |
| e |
1.00019124 |
| q (au) |
0.777758 |
| a (au) |
-4066.956181 |
| i (deg) |
97.176622 |
| Ω (om, deg) |
343.578585 |
| ω (w, deg) |
253.819495 |
| M (ma, deg) |
0.000377 |
Magnitude
Scatter + Global Linear
$$
M_a = (8.778 + 4.911\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
8.778 |
| n |
4.911 |
| gf |
0.800 |
| gb |
-0.677 |
| k |
0.800 |
| 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 |
20:22:31.39 |
+46:36:19.0 |
HIP 100571 |
12.57 |
| 2026-06-01 12:00 |
20:22:30.36 |
+46:36:31.3 |
HIP 100571 |
12.81 |
| 2026-06-02 00:00 |
20:22:29.33 |
+46:36:43.5 |
HIP 100571 |
13.05 |
| 2026-06-02 12:00 |
20:22:28.28 |
+46:36:55.6 |
HIP 100571 |
13.30 |
| 2026-06-03 00:00 |
20:22:27.22 |
+46:37:07.6 |
HIP 100571 |
13.54 |
| 2026-06-03 12:00 |
20:22:26.15 |
+46:37:19.4 |
HIP 100571 |
13.79 |
| 2026-06-04 00:00 |
20:22:25.07 |
+46:37:31.2 |
HIP 100571 |
14.04 |
| 2026-06-04 12:00 |
20:22:23.98 |
+46:37:42.9 |
HIP 100571 |
14.29 |
| 2026-06-05 00:00 |
20:22:22.87 |
+46:37:54.5 |
HIP 100571 |
14.55 |
| 2026-06-05 12:00 |
20:22:21.76 |
+46:38:06.0 |
HIP 100571 |
14.80 |
| 2026-06-06 00:00 |
20:22:20.63 |
+46:38:17.4 |
HIP 100571 |
15.06 |
| 2026-06-06 12:00 |
20:22:19.50 |
+46:38:28.7 |
HIP 100571 |
15.32 |
| 2026-06-07 00:00 |
20:22:18.35 |
+46:38:39.9 |
HIP 100571 |
15.58 |
| 2026-06-07 12:00 |
20:22:17.19 |
+46:38:50.9 |
HIP 100571 |
15.84 |
| 2026-06-08 00:00 |
20:22:16.02 |
+46:39:01.9 |
HIP 100571 |
16.10 |
| 2026-06-08 12:00 |
20:22:14.84 |
+46:39:12.8 |
HIP 100571 |
16.36 |
| 2026-06-09 00:00 |
20:22:13.65 |
+46:39:23.5 |
HIP 100571 |
16.62 |
| 2026-06-09 12:00 |
20:22:12.45 |
+46:39:34.2 |
HIP 100571 |
16.89 |
| 2026-06-10 00:00 |
20:22:11.24 |
+46:39:44.8 |
HIP 100571 |
17.15 |
| 2026-06-10 12:00 |
20:22:10.02 |
+46:39:55.2 |
HIP 100571 |
17.42 |
| 2026-06-11 00:00 |
20:22:08.79 |
+46:40:05.5 |
HIP 100571 |
17.69 |
| 2026-06-11 12:00 |
20:22:07.55 |
+46:40:15.7 |
HIP 100571 |
17.96 |
| 2026-06-12 00:00 |
20:22:06.30 |
+46:40:25.8 |
HIP 100571 |
18.23 |
| 2026-06-12 12:00 |
20:22:05.04 |
+46:40:35.8 |
HIP 100571 |
18.50 |
| 2026-06-13 00:00 |
20:22:03.76 |
+46:40:45.7 |
HIP 100571 |
18.77 |
| 2026-06-13 12:00 |
20:22:02.48 |
+46:40:55.5 |
HIP 100571 |
19.04 |
| 2026-06-14 00:00 |
20:22:01.19 |
+46:41:05.1 |
HIP 100571 |
19.31 |
| 2026-06-14 12:00 |
20:21:59.89 |
+46:41:14.7 |
HIP 100571 |
19.58 |
| 2026-06-15 00:00 |
20:21:58.58 |
+46:41:24.1 |
HIP 100571 |
19.85 |
| 2026-06-15 12:00 |
20:21:57.26 |
+46:41:33.4 |
HIP 100571 |
20.13 |
| 2026-06-16 00:00 |
20:21:55.94 |
+46:41:42.6 |
HIP 100571 |
20.40 |
| 2026-06-16 12:00 |
20:21:54.60 |
+46:41:51.7 |
HIP 100571 |
20.67 |
| 2026-06-17 00:00 |
20:21:53.25 |
+46:42:00.6 |
HIP 100571 |
20.95 |
| 2026-06-17 12:00 |
20:21:51.90 |
+46:42:09.5 |
HIP 100571 |
21.22 |
| 2026-06-18 00:00 |
20:21:50.53 |
+46:42:18.2 |
HIP 100250 |
21.15 |
| 2026-06-18 12:00 |
20:21:49.16 |
+46:42:26.8 |
HIP 100250 |
20.88 |
| 2026-06-19 00:00 |
20:21:47.78 |
+46:42:35.2 |
HIP 100250 |
20.60 |
| 2026-06-19 12:00 |
20:21:46.39 |
+46:42:43.6 |
HIP 100250 |
20.33 |
| 2026-06-20 00:00 |
20:21:44.99 |
+46:42:51.8 |
HIP 100250 |
20.06 |
| 2026-06-20 12:00 |
20:21:43.58 |
+46:42:59.9 |
HIP 100250 |
19.78 |
| 2026-06-21 00:00 |
20:21:42.16 |
+46:43:07.9 |
HIP 100250 |
19.51 |
| 2026-06-21 12:00 |
20:21:40.74 |
+46:43:15.7 |
HIP 100250 |
19.23 |
| 2026-06-22 00:00 |
20:21:39.31 |
+46:43:23.5 |
HIP 100250 |
18.96 |