| Parameter |
Value |
| Designation |
C/2014 G3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2015-02-02T13:50:16.434240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:52Z |
| Obs used |
270 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
12.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-09-25.0000000 |
| e |
0.91564120 |
| q (au) |
4.697983 |
| a (au) |
55.690492 |
| i (deg) |
155.824547 |
| Ω (om, deg) |
4.542217 |
| ω (w, deg) |
147.803219 |
| M (ma, deg) |
359.690331 |
Magnitude
Scatter + Global Linear
$$
M_a = (4.926 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
4.926 |
| n |
6.000 |
| gf |
0.941 |
| gb |
-0.837 |
| k |
0.999 |
| δ90 |
9.845 |
| 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) |
| 2026-03-26 00:00 |
05:30:08.31 |
-00:08:02.3 |
HIP 25727 |
10.24 |
| 2026-03-26 12:00 |
05:30:08.68 |
-00:07:30.9 |
HIP 25727 |
9.98 |
| 2026-03-27 00:00 |
05:30:09.10 |
-00:06:59.5 |
HIP 25727 |
9.74 |
| 2026-03-27 12:00 |
05:30:09.56 |
-00:06:28.2 |
HIP 25727 |
9.54 |
| 2026-03-28 00:00 |
05:30:10.06 |
-00:05:56.9 |
HIP 25727 |
9.37 |
| 2026-03-28 12:00 |
05:30:10.60 |
-00:05:25.7 |
HIP 25727 |
9.25 |
| 2026-03-29 00:00 |
05:30:11.19 |
-00:04:54.6 |
HIP 25727 |
9.16 |
| 2026-03-29 12:00 |
05:30:11.82 |
-00:04:23.5 |
HIP 25727 |
9.11 |
| 2026-03-30 00:00 |
05:30:12.49 |
-00:03:52.5 |
HIP 25727 |
9.11 |
| 2026-03-30 12:00 |
05:30:13.20 |
-00:03:21.5 |
HIP 25727 |
9.15 |
| 2026-03-31 00:00 |
05:30:13.96 |
-00:02:50.6 |
HIP 25727 |
9.23 |
| 2026-03-31 12:00 |
05:30:14.76 |
-00:02:19.8 |
HIP 25727 |
9.36 |
| 2026-04-01 00:00 |
05:30:15.59 |
-00:01:49.1 |
HIP 25818 |
8.99 |
| 2026-04-01 12:00 |
05:30:16.47 |
-00:01:18.5 |
HIP 25818 |
8.60 |
| 2026-04-02 00:00 |
05:30:17.39 |
-00:00:47.9 |
HIP 25818 |
8.21 |
| 2026-04-02 12:00 |
05:30:18.36 |
-00:00:17.4 |
HIP 25818 |
7.84 |
| 2026-04-03 00:00 |
05:30:19.36 |
+00:00:13.0 |
HIP 25818 |
7.48 |
| 2026-04-03 12:00 |
05:30:20.40 |
+00:00:43.3 |
HIP 25818 |
7.14 |
| 2026-04-04 00:00 |
05:30:21.49 |
+00:01:13.6 |
HIP 25818 |
6.81 |
| 2026-04-04 12:00 |
05:30:22.61 |
+00:01:43.7 |
HIP 25818 |
6.52 |
| 2026-04-05 00:00 |
05:30:23.78 |
+00:02:13.8 |
HIP 25818 |
6.25 |
| 2026-04-05 12:00 |
05:30:24.98 |
+00:02:43.8 |
HIP 25818 |
6.01 |
| 2026-04-06 00:00 |
05:30:26.23 |
+00:03:13.7 |
HIP 25818 |
5.81 |
| 2026-04-06 12:00 |
05:30:27.51 |
+00:03:43.5 |
HIP 25818 |
5.66 |
| 2026-04-07 00:00 |
05:30:28.83 |
+00:04:13.2 |
HIP 25818 |
5.56 |
| 2026-04-07 12:00 |
05:30:30.20 |
+00:04:42.8 |
HIP 25818 |
5.51 |
| 2026-04-08 00:00 |
05:30:31.60 |
+00:05:12.3 |
HIP 25818 |
5.52 |
| 2026-04-08 12:00 |
05:30:33.04 |
+00:05:41.6 |
HIP 25818 |
5.58 |
| 2026-04-09 00:00 |
05:30:34.52 |
+00:06:10.9 |
HIP 25818 |
5.70 |
| 2026-04-09 12:00 |
05:30:36.04 |
+00:06:40.1 |
HIP 25818 |
5.88 |
| 2026-04-10 00:00 |
05:30:37.59 |
+00:07:09.2 |
HIP 25818 |
6.11 |
| 2026-04-10 12:00 |
05:30:39.19 |
+00:07:38.2 |
HIP 25818 |
6.38 |
| 2026-04-11 00:00 |
05:30:40.82 |
+00:08:07.0 |
HIP 25818 |
6.70 |
| 2026-04-11 12:00 |
05:30:42.49 |
+00:08:35.8 |
HIP 25818 |
7.06 |
| 2026-04-12 00:00 |
05:30:44.20 |
+00:09:04.4 |
HIP 25818 |
7.45 |
| 2026-04-12 12:00 |
05:30:45.94 |
+00:09:32.9 |
HIP 25818 |
7.87 |
| 2026-04-13 00:00 |
05:30:47.73 |
+00:10:01.3 |
HIP 25818 |
8.31 |
| 2026-04-13 12:00 |
05:30:49.55 |
+00:10:29.6 |
HIP 25818 |
8.78 |
| 2026-04-14 00:00 |
05:30:51.40 |
+00:10:57.7 |
HIP 25818 |
9.28 |
| 2026-04-14 12:00 |
05:30:53.29 |
+00:11:25.7 |
HIP 25818 |
9.79 |
| 2026-04-15 00:00 |
05:30:55.22 |
+00:11:53.6 |
HIP 25818 |
10.31 |
| 2026-04-15 12:00 |
05:30:57.19 |
+00:12:21.4 |
HIP 25818 |
10.86 |
| 2026-04-16 00:00 |
05:30:59.19 |
+00:12:49.1 |
HIP 25799 |
10.98 |