| Parameter |
Value |
| Designation |
C/2020 K5 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-06-05T14:17:47.019840Z |
| Orbit solution date (soln_date, UTC) |
2022-07-19T01:12:39Z |
| Obs used |
95 |
| NEO |
- |
| M1 |
15.100 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-05-25T12:10:42.297600Z |
| Discovery magnitude (MPC) |
20.79 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2020-08-26.0000000 |
| e |
1.00134161 |
| q (au) |
1.535413 |
| a (au) |
-1144.452658 |
| i (deg) |
67.161983 |
| Ω (om, deg) |
86.163539 |
| ω (w, deg) |
249.602889 |
| M (ma, deg) |
-0.007219 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.860 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.860 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.998 |
| 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 |
06:44:26.94 |
+50:59:00.1 |
HIP 32113 |
19.75 |
| 2026-06-01 12:00 |
06:44:37.85 |
+50:58:39.7 |
HIP 32113 |
21.49 |
| 2026-06-02 00:00 |
06:44:48.80 |
+50:58:19.6 |
HIP 32113 |
23.23 |
| 2026-06-02 12:00 |
06:44:59.78 |
+50:57:59.8 |
HIP 32499 |
21.78 |
| 2026-06-03 00:00 |
06:45:10.80 |
+50:57:40.4 |
HIP 32499 |
20.14 |
| 2026-06-03 12:00 |
06:45:21.85 |
+50:57:21.2 |
HIP 32499 |
18.53 |
| 2026-06-04 00:00 |
06:45:32.94 |
+50:57:02.3 |
HIP 32499 |
16.95 |
| 2026-06-04 12:00 |
06:45:44.06 |
+50:56:43.7 |
HIP 32499 |
15.41 |
| 2026-06-05 00:00 |
06:45:55.22 |
+50:56:25.5 |
HIP 32499 |
13.92 |
| 2026-06-05 12:00 |
06:46:06.41 |
+50:56:07.5 |
HIP 32499 |
12.52 |
| 2026-06-06 00:00 |
06:46:17.63 |
+50:55:49.9 |
HIP 32499 |
11.22 |
| 2026-06-06 12:00 |
06:46:28.89 |
+50:55:32.5 |
HIP 32499 |
10.09 |
| 2026-06-07 00:00 |
06:46:40.18 |
+50:55:15.5 |
HIP 32499 |
9.17 |
| 2026-06-07 12:00 |
06:46:51.50 |
+50:54:58.8 |
HIP 32499 |
8.55 |
| 2026-06-08 00:00 |
06:47:02.84 |
+50:54:42.4 |
HIP 32499 |
8.28 |
| 2026-06-08 12:00 |
06:47:14.22 |
+50:54:26.3 |
HIP 32499 |
8.42 |
| 2026-06-09 00:00 |
06:47:25.63 |
+50:54:10.5 |
HIP 32499 |
8.93 |
| 2026-06-09 12:00 |
06:47:37.07 |
+50:53:55.0 |
HIP 32499 |
9.77 |
| 2026-06-10 00:00 |
06:47:48.53 |
+50:53:39.9 |
HIP 32499 |
10.87 |
| 2026-06-10 12:00 |
06:48:00.02 |
+50:53:25.0 |
HIP 32499 |
12.14 |
| 2026-06-11 00:00 |
06:48:11.54 |
+50:53:10.5 |
HIP 32499 |
13.55 |
| 2026-06-11 12:00 |
06:48:23.09 |
+50:52:56.3 |
HIP 32499 |
15.06 |
| 2026-06-12 00:00 |
06:48:34.66 |
+50:52:42.4 |
HIP 32499 |
16.64 |
| 2026-06-12 12:00 |
06:48:46.26 |
+50:52:28.9 |
HIP 32499 |
18.28 |
| 2026-06-13 00:00 |
06:48:57.88 |
+50:52:15.7 |
HIP 32499 |
19.96 |
| 2026-06-13 12:00 |
06:49:09.52 |
+50:52:02.7 |
HIP 32499 |
21.67 |
| 2026-06-14 00:00 |
06:49:21.19 |
+50:51:50.1 |
HIP 32499 |
23.41 |
| 2026-06-14 12:00 |
06:49:32.88 |
+50:51:37.9 |
HIP 32499 |
25.17 |
| 2026-06-15 00:00 |
06:49:44.59 |
+50:51:25.9 |
HIP 32987 |
26.93 |
| 2026-06-15 12:00 |
06:49:56.33 |
+50:51:14.3 |
HIP 32987 |
25.16 |
| 2026-06-16 00:00 |
06:50:08.08 |
+50:51:03.0 |
HIP 32987 |
23.41 |
| 2026-06-16 12:00 |
06:50:19.86 |
+50:50:52.1 |
HIP 32987 |
21.68 |
| 2026-06-17 00:00 |
06:50:31.65 |
+50:50:41.5 |
HIP 32987 |
19.97 |
| 2026-06-17 12:00 |
06:50:43.46 |
+50:50:31.2 |
HIP 32987 |
18.30 |
| 2026-06-18 00:00 |
06:50:55.29 |
+50:50:21.2 |
HIP 32987 |
16.67 |
| 2026-06-18 12:00 |
06:51:07.14 |
+50:50:11.6 |
HIP 32987 |
15.10 |
| 2026-06-19 00:00 |
06:51:19.00 |
+50:50:02.2 |
HIP 32987 |
13.61 |
| 2026-06-19 12:00 |
06:51:30.88 |
+50:49:53.3 |
HIP 32987 |
12.24 |
| 2026-06-20 00:00 |
06:51:42.77 |
+50:49:44.6 |
HIP 32987 |
11.01 |
| 2026-06-20 12:00 |
06:51:54.68 |
+50:49:36.3 |
HIP 32987 |
10.01 |
| 2026-06-21 00:00 |
06:52:06.60 |
+50:49:28.4 |
HIP 32987 |
9.28 |
| 2026-06-21 12:00 |
06:52:18.54 |
+50:49:20.7 |
HIP 32987 |
8.91 |
| 2026-06-22 00:00 |
06:52:30.49 |
+50:49:13.4 |
HIP 32987 |
8.94 |