| Parameter |
Value |
| Designation |
C/2014 OG392 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-12-01T11:14:16.670400Z |
| Orbit solution date (soln_date, UTC) |
2025-12-18T15:12:21Z |
| Obs used |
369 |
| NEO |
- |
| M1 |
11.500 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2019-08-18.0000000 |
| e |
0.18203659 |
| q (au) |
9.968960 |
| a (au) |
12.187538 |
| i (deg) |
9.036164 |
| Ω (om, deg) |
145.825140 |
| ω (w, deg) |
254.110404 |
| M (ma, deg) |
340.623312 |
Magnitude
Scatter + Global Linear
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
05:59:18.25 |
+16:43:50.0 |
HIP 28289 |
12.14 |
| 2026-05-12 12:00 |
05:59:30.07 |
+16:44:06.0 |
HIP 28289 |
14.54 |
| 2026-05-13 00:00 |
05:59:41.94 |
+16:44:21.9 |
HIP 28289 |
17.09 |
| 2026-05-13 12:00 |
05:59:53.85 |
+16:44:37.6 |
HIP 28289 |
19.73 |
| 2026-05-14 00:00 |
06:00:05.80 |
+16:44:53.1 |
HIP 28509 |
20.45 |
| 2026-05-14 12:00 |
06:00:17.80 |
+16:45:08.4 |
HIP 28509 |
18.35 |
| 2026-05-15 00:00 |
06:00:29.85 |
+16:45:23.6 |
HIP 28509 |
16.49 |
| 2026-05-15 12:00 |
06:00:41.94 |
+16:45:38.5 |
HIP 28509 |
14.96 |
| 2026-05-16 00:00 |
06:00:54.07 |
+16:45:53.3 |
HIP 28509 |
13.88 |
| 2026-05-16 12:00 |
06:01:06.24 |
+16:46:07.9 |
HIP 28556 |
12.75 |
| 2026-05-17 00:00 |
06:01:18.46 |
+16:46:22.3 |
HIP 28556 |
10.93 |
| 2026-05-17 12:00 |
06:01:30.72 |
+16:46:36.6 |
HIP 28556 |
9.68 |
| 2026-05-18 00:00 |
06:01:43.02 |
+16:46:50.6 |
HIP 28556 |
9.24 |
| 2026-05-18 12:00 |
06:01:55.35 |
+16:47:04.5 |
HIP 28556 |
9.72 |
| 2026-05-19 00:00 |
06:02:07.73 |
+16:47:18.2 |
HIP 28556 |
11.02 |
| 2026-05-19 12:00 |
06:02:20.15 |
+16:47:31.6 |
HIP 28556 |
12.89 |
| 2026-05-20 00:00 |
06:02:32.61 |
+16:47:44.9 |
HIP 28556 |
15.13 |
| 2026-05-20 12:00 |
06:02:45.10 |
+16:47:58.0 |
HIP 28710 |
15.92 |
| 2026-05-21 00:00 |
06:02:57.63 |
+16:48:10.9 |
HIP 28710 |
13.11 |
| 2026-05-21 12:00 |
06:03:10.20 |
+16:48:23.7 |
HIP 28710 |
10.40 |
| 2026-05-22 00:00 |
06:03:22.80 |
+16:48:36.2 |
HIP 28710 |
7.91 |
| 2026-05-22 12:00 |
06:03:35.44 |
+16:48:48.5 |
HIP 28710 |
5.92 |
| 2026-05-23 00:00 |
06:03:48.11 |
+16:49:00.7 |
HIP 28710 |
5.10 |
| 2026-05-23 12:00 |
06:04:00.82 |
+16:49:12.6 |
HIP 28710 |
5.95 |
| 2026-05-24 00:00 |
06:04:13.57 |
+16:49:24.4 |
HIP 28710 |
7.97 |
| 2026-05-24 12:00 |
06:04:26.34 |
+16:49:35.9 |
HIP 28710 |
10.51 |
| 2026-05-25 00:00 |
06:04:39.15 |
+16:49:47.3 |
HIP 28802 |
10.58 |
| 2026-05-25 12:00 |
06:04:51.99 |
+16:49:58.5 |
HIP 28802 |
10.39 |
| 2026-05-26 00:00 |
06:05:04.86 |
+16:50:09.5 |
HIP 28802 |
11.08 |
| 2026-05-26 12:00 |
06:05:17.76 |
+16:50:20.3 |
HIP 28802 |
12.52 |
| 2026-05-27 00:00 |
06:05:30.70 |
+16:50:30.8 |
HIP 28802 |
14.49 |
| 2026-05-27 12:00 |
06:05:43.66 |
+16:50:41.2 |
HIP 28802 |
16.80 |
| 2026-05-28 00:00 |
06:05:56.66 |
+16:50:51.4 |
HIP 28802 |
19.35 |
| 2026-05-28 12:00 |
06:06:09.68 |
+16:51:01.4 |
HIP 28802 |
22.04 |
| 2026-05-29 00:00 |
06:06:22.73 |
+16:51:11.2 |
HIP 29001 |
21.00 |
| 2026-05-29 12:00 |
06:06:35.81 |
+16:51:20.9 |
HIP 29001 |
19.67 |
| 2026-05-30 00:00 |
06:06:48.92 |
+16:51:30.3 |
HIP 29001 |
18.76 |
| 2026-05-30 12:00 |
06:07:02.05 |
+16:51:39.5 |
HIP 29001 |
18.36 |
| 2026-05-31 00:00 |
06:07:15.21 |
+16:51:48.5 |
HIP 29001 |
18.49 |
| 2026-05-31 12:00 |
06:07:28.40 |
+16:51:57.3 |
HIP 29001 |
19.14 |
| 2026-06-01 00:00 |
06:07:41.61 |
+16:52:05.9 |
HIP 29001 |
20.27 |
| 2026-06-01 12:00 |
06:07:54.85 |
+16:52:14.3 |
HIP 29001 |
21.80 |
| 2026-06-02 00:00 |
06:08:08.11 |
+16:52:22.6 |
HIP 29187 |
22.37 |