| Parameter |
Value |
| Designation |
203P/Korlevic |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-02-09T01:12:32.045760Z |
| Orbit solution date (soln_date, UTC) |
2025-01-02T20:12:48Z |
| Obs used |
1174 |
| NEO |
- |
| M1 |
12.900 |
| K1 |
6.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-02-04.0000000 |
| e |
0.31604886 |
| q (au) |
3.183032 |
| a (au) |
4.653888 |
| i (deg) |
2.973799 |
| Ω (om, deg) |
290.519023 |
| ω (w, deg) |
154.727921 |
| M (ma, deg) |
71.168526 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.830 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.830 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.888 |
| k |
1.000 |
| δ90 |
9.997 |
| 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) |
| 2026-05-12 00:00 |
19:55:23.71 |
-20:55:53.1 |
HIP 98084 |
27.79 |
| 2026-05-12 12:00 |
19:55:22.57 |
-20:55:51.0 |
HIP 98084 |
27.84 |
| 2026-05-13 00:00 |
19:55:21.26 |
-20:55:49.2 |
HIP 98084 |
27.91 |
| 2026-05-13 12:00 |
19:55:19.77 |
-20:55:48.0 |
HIP 98084 |
28.01 |
| 2026-05-14 00:00 |
19:55:18.10 |
-20:55:47.2 |
HIP 98084 |
28.14 |
| 2026-05-14 12:00 |
19:55:16.26 |
-20:55:46.9 |
HIP 98084 |
28.29 |
| 2026-05-15 00:00 |
19:55:14.23 |
-20:55:47.1 |
HIP 98084 |
28.47 |
| 2026-05-15 12:00 |
19:55:12.02 |
-20:55:47.8 |
HIP 98084 |
28.69 |
| 2026-05-16 00:00 |
19:55:09.64 |
-20:55:48.9 |
HIP 98084 |
28.93 |
| 2026-05-16 12:00 |
19:55:07.07 |
-20:55:50.5 |
HIP 98084 |
29.21 |
| 2026-05-17 00:00 |
19:55:04.33 |
-20:55:52.5 |
HIP 98084 |
29.52 |
| 2026-05-17 12:00 |
19:55:01.41 |
-20:55:55.0 |
HIP 98084 |
29.87 |
| 2026-05-18 00:00 |
19:54:58.31 |
-20:55:58.0 |
HIP 98084 |
30.26 |
| 2026-05-18 12:00 |
19:54:55.04 |
-20:56:01.5 |
HIP 97836 |
29.67 |
| 2026-05-19 00:00 |
19:54:51.58 |
-20:56:05.4 |
HIP 97836 |
28.88 |
| 2026-05-19 12:00 |
19:54:47.95 |
-20:56:09.8 |
HIP 97836 |
28.04 |
| 2026-05-20 00:00 |
19:54:44.14 |
-20:56:14.6 |
HIP 97836 |
27.17 |
| 2026-05-20 12:00 |
19:54:40.16 |
-20:56:19.9 |
HIP 97836 |
26.25 |
| 2026-05-21 00:00 |
19:54:35.99 |
-20:56:25.7 |
HIP 97836 |
25.29 |
| 2026-05-21 12:00 |
19:54:31.66 |
-20:56:31.9 |
HIP 97836 |
24.30 |
| 2026-05-22 00:00 |
19:54:27.14 |
-20:56:38.6 |
HIP 97836 |
23.26 |
| 2026-05-22 12:00 |
19:54:22.46 |
-20:56:45.7 |
HIP 97836 |
22.19 |
| 2026-05-23 00:00 |
19:54:17.60 |
-20:56:53.2 |
HIP 97836 |
21.08 |
| 2026-05-23 12:00 |
19:54:12.56 |
-20:57:01.2 |
HIP 97836 |
19.93 |
| 2026-05-24 00:00 |
19:54:07.35 |
-20:57:09.7 |
HIP 97836 |
18.74 |
| 2026-05-24 12:00 |
19:54:01.97 |
-20:57:18.6 |
HIP 97836 |
17.52 |
| 2026-05-25 00:00 |
19:53:56.42 |
-20:57:27.9 |
HIP 97836 |
16.27 |
| 2026-05-25 12:00 |
19:53:50.69 |
-20:57:37.6 |
HIP 97836 |
14.98 |
| 2026-05-26 00:00 |
19:53:44.79 |
-20:57:47.8 |
HIP 97836 |
13.67 |
| 2026-05-26 12:00 |
19:53:38.72 |
-20:57:58.4 |
HIP 97836 |
12.34 |
| 2026-05-27 00:00 |
19:53:32.48 |
-20:58:09.5 |
HIP 97836 |
10.99 |
| 2026-05-27 12:00 |
19:53:26.08 |
-20:58:21.0 |
HIP 97836 |
9.64 |
| 2026-05-28 00:00 |
19:53:19.50 |
-20:58:32.8 |
HIP 97836 |
8.31 |
| 2026-05-28 12:00 |
19:53:12.75 |
-20:58:45.1 |
HIP 97836 |
7.04 |
| 2026-05-29 00:00 |
19:53:05.84 |
-20:58:57.9 |
HIP 97836 |
5.90 |
| 2026-05-29 12:00 |
19:52:58.75 |
-20:59:11.0 |
HIP 97836 |
5.02 |
| 2026-05-30 00:00 |
19:52:51.51 |
-20:59:24.5 |
HIP 97836 |
4.59 |
| 2026-05-30 12:00 |
19:52:44.09 |
-20:59:38.5 |
HIP 97836 |
4.78 |
| 2026-05-31 00:00 |
19:52:36.51 |
-20:59:52.8 |
HIP 97836 |
5.56 |
| 2026-05-31 12:00 |
19:52:28.76 |
-21:00:07.6 |
HIP 97836 |
6.77 |
| 2026-06-01 00:00 |
19:52:20.85 |
-21:00:22.7 |
HIP 97836 |
8.24 |
| 2026-06-01 12:00 |
19:52:12.78 |
-21:00:38.3 |
HIP 97836 |
9.87 |
| 2026-06-02 00:00 |
19:52:04.54 |
-21:00:54.2 |
HIP 97836 |
11.62 |