| 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) |
| 2026-06-01 00:00 |
05:35:59.50 |
+00:42:47.5 |
HIP 26276 |
4.07 |
| 2026-06-01 12:00 |
05:36:03.60 |
+00:42:57.4 |
HIP 26276 |
5.02 |
| 2026-06-02 00:00 |
05:36:07.72 |
+00:43:07.1 |
HIP 26276 |
6.00 |
| 2026-06-02 12:00 |
05:36:11.84 |
+00:43:16.5 |
HIP 26276 |
7.01 |
| 2026-06-03 00:00 |
05:36:15.97 |
+00:43:25.8 |
HIP 26276 |
8.02 |
| 2026-06-03 12:00 |
05:36:20.11 |
+00:43:34.8 |
HIP 26276 |
9.05 |
| 2026-06-04 00:00 |
05:36:24.25 |
+00:43:43.5 |
HIP 26276 |
10.08 |
| 2026-06-04 12:00 |
05:36:28.41 |
+00:43:52.1 |
HIP 26276 |
11.11 |
| 2026-06-05 00:00 |
05:36:32.57 |
+00:44:00.4 |
HIP 26276 |
12.15 |
| 2026-06-05 12:00 |
05:36:36.73 |
+00:44:08.5 |
HIP 26276 |
13.19 |
| 2026-06-06 00:00 |
05:36:40.91 |
+00:44:16.3 |
HIP 26276 |
14.24 |
| 2026-06-06 12:00 |
05:36:45.09 |
+00:44:23.9 |
HIP 26276 |
15.28 |
| 2026-06-07 00:00 |
05:36:49.27 |
+00:44:31.3 |
HIP 26276 |
16.33 |
| 2026-06-07 12:00 |
05:36:53.46 |
+00:44:38.4 |
HIP 26276 |
17.39 |
| 2026-06-08 00:00 |
05:36:57.66 |
+00:44:45.3 |
HIP 26276 |
18.44 |
| 2026-06-08 12:00 |
05:37:01.86 |
+00:44:52.0 |
HIP 26476 |
18.49 |
| 2026-06-09 00:00 |
05:37:06.06 |
+00:44:58.4 |
HIP 26476 |
17.69 |
| 2026-06-09 12:00 |
05:37:10.27 |
+00:45:04.6 |
HIP 26476 |
16.93 |
| 2026-06-10 00:00 |
05:37:14.48 |
+00:45:10.6 |
HIP 26476 |
16.20 |
| 2026-06-10 12:00 |
05:37:18.70 |
+00:45:16.3 |
HIP 26476 |
15.51 |
| 2026-06-11 00:00 |
05:37:22.92 |
+00:45:21.8 |
HIP 26476 |
14.86 |
| 2026-06-11 12:00 |
05:37:27.14 |
+00:45:27.1 |
HIP 26476 |
14.27 |
| 2026-06-12 00:00 |
05:37:31.37 |
+00:45:32.1 |
HIP 26476 |
13.74 |
| 2026-06-12 12:00 |
05:37:35.60 |
+00:45:36.8 |
HIP 26476 |
13.28 |
| 2026-06-13 00:00 |
05:37:39.83 |
+00:45:41.4 |
HIP 26476 |
12.89 |
| 2026-06-13 12:00 |
05:37:44.06 |
+00:45:45.7 |
HIP 26476 |
12.58 |
| 2026-06-14 00:00 |
05:37:48.29 |
+00:45:49.7 |
HIP 26476 |
12.36 |
| 2026-06-14 12:00 |
05:37:52.53 |
+00:45:53.5 |
HIP 26476 |
12.23 |
| 2026-06-15 00:00 |
05:37:56.76 |
+00:45:57.1 |
HIP 26476 |
12.19 |
| 2026-06-15 12:00 |
05:38:00.99 |
+00:46:00.5 |
HIP 26476 |
12.26 |
| 2026-06-16 00:00 |
05:38:05.23 |
+00:46:03.5 |
HIP 26476 |
12.41 |
| 2026-06-16 12:00 |
05:38:09.46 |
+00:46:06.4 |
HIP 26476 |
12.66 |
| 2026-06-17 00:00 |
05:38:13.70 |
+00:46:09.0 |
HIP 26476 |
12.99 |
| 2026-06-17 12:00 |
05:38:17.93 |
+00:46:11.4 |
HIP 26476 |
13.40 |
| 2026-06-18 00:00 |
05:38:22.16 |
+00:46:13.5 |
HIP 26476 |
13.89 |
| 2026-06-18 12:00 |
05:38:26.39 |
+00:46:15.4 |
HIP 26476 |
14.44 |
| 2026-06-19 00:00 |
05:38:30.62 |
+00:46:17.1 |
HIP 26476 |
15.04 |
| 2026-06-19 12:00 |
05:38:34.84 |
+00:46:18.5 |
HIP 26476 |
15.70 |
| 2026-06-20 00:00 |
05:38:39.06 |
+00:46:19.6 |
HIP 26633 |
15.19 |
| 2026-06-20 12:00 |
05:38:43.28 |
+00:46:20.6 |
HIP 26633 |
14.16 |
| 2026-06-21 00:00 |
05:38:47.50 |
+00:46:21.3 |
HIP 26633 |
13.15 |
| 2026-06-21 12:00 |
05:38:51.71 |
+00:46:21.7 |
HIP 26633 |
12.14 |
| 2026-06-22 00:00 |
05:38:55.92 |
+00:46:21.9 |
HIP 26633 |
11.14 |