| Parameter |
Value |
| Designation |
P/2014 O3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-04-17T13:13:10.761600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:57Z |
| Obs used |
53 |
| NEO |
- |
| M1 |
14.100 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-07-17.0000000 |
| e |
0.38501995 |
| q (au) |
4.640620 |
| a (au) |
7.545968 |
| i (deg) |
7.806572 |
| Ω (om, deg) |
87.704076 |
| ω (w, deg) |
204.364367 |
| M (ma, deg) |
4.300672 |
Magnitude
Scatter + Global Linear
$$
M_a = (18.936 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
18.936 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.855 |
| k |
0.800 |
| 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) |
| 2026-09-20 00:00 |
09:07:46.10 |
+21:33:01.6 |
HIP 44812 |
3.37 |
| 2026-09-20 12:00 |
09:07:57.05 |
+21:32:29.1 |
HIP 44812 |
2.73 |
| 2026-09-21 00:00 |
09:08:07.95 |
+21:31:56.9 |
HIP 44812 |
4.12 |
| 2026-09-21 12:00 |
09:08:18.79 |
+21:31:25.0 |
HIP 44812 |
6.31 |
| 2026-09-22 00:00 |
09:08:29.58 |
+21:30:53.4 |
HIP 44812 |
8.70 |
| 2026-09-22 12:00 |
09:08:40.31 |
+21:30:22.0 |
HIP 44812 |
11.15 |
| 2026-09-23 00:00 |
09:08:50.99 |
+21:29:51.0 |
HIP 44812 |
13.63 |
| 2026-09-23 12:00 |
09:09:01.61 |
+21:29:20.2 |
HIP 44812 |
16.11 |
| 2026-09-24 00:00 |
09:09:12.17 |
+21:28:49.8 |
HIP 44812 |
18.58 |
| 2026-09-24 12:00 |
09:09:22.68 |
+21:28:19.6 |
HIP 45046 |
19.69 |
| 2026-09-25 00:00 |
09:09:33.13 |
+21:27:49.7 |
HIP 45046 |
18.16 |
| 2026-09-25 12:00 |
09:09:43.53 |
+21:27:20.2 |
HIP 45046 |
16.86 |
| 2026-09-26 00:00 |
09:09:53.86 |
+21:26:50.9 |
HIP 45046 |
15.84 |
| 2026-09-26 12:00 |
09:10:04.14 |
+21:26:21.9 |
HIP 45046 |
15.16 |
| 2026-09-27 00:00 |
09:10:14.36 |
+21:25:53.3 |
HIP 45046 |
14.84 |
| 2026-09-27 12:00 |
09:10:24.52 |
+21:25:25.0 |
HIP 45046 |
14.92 |
| 2026-09-28 00:00 |
09:10:34.61 |
+21:24:57.0 |
HIP 45046 |
15.37 |
| 2026-09-28 12:00 |
09:10:44.65 |
+21:24:29.3 |
HIP 45046 |
16.16 |
| 2026-09-29 00:00 |
09:10:54.63 |
+21:24:01.9 |
HIP 45046 |
17.23 |
| 2026-09-29 12:00 |
09:11:04.54 |
+21:23:34.8 |
HIP 45046 |
18.54 |
| 2026-09-30 00:00 |
09:11:14.39 |
+21:23:08.1 |
HIP 45046 |
20.02 |
| 2026-09-30 12:00 |
09:11:24.19 |
+21:22:41.7 |
HIP 45046 |
21.64 |
| 2026-10-01 00:00 |
09:11:33.91 |
+21:22:15.6 |
HIP 45046 |
23.37 |
| 2026-10-01 12:00 |
09:11:43.58 |
+21:21:49.9 |
HIP 45046 |
25.17 |
| 2026-10-02 00:00 |
09:11:53.17 |
+21:21:24.5 |
HIP 45272 |
24.64 |
| 2026-10-02 12:00 |
09:12:02.71 |
+21:20:59.4 |
HIP 45272 |
22.38 |
| 2026-10-03 00:00 |
09:12:12.18 |
+21:20:34.7 |
HIP 45272 |
20.14 |
| 2026-10-03 12:00 |
09:12:21.58 |
+21:20:10.3 |
HIP 45272 |
17.91 |
| 2026-10-04 00:00 |
09:12:30.92 |
+21:19:46.3 |
HIP 45272 |
15.70 |
| 2026-10-04 12:00 |
09:12:40.19 |
+21:19:22.6 |
HIP 45272 |
13.51 |
| 2026-10-05 00:00 |
09:12:49.39 |
+21:18:59.3 |
HIP 45272 |
11.33 |
| 2026-10-05 12:00 |
09:12:58.52 |
+21:18:36.3 |
HIP 45272 |
9.17 |
| 2026-10-06 00:00 |
09:13:07.59 |
+21:18:13.7 |
HIP 45272 |
7.02 |
| 2026-10-06 12:00 |
09:13:16.58 |
+21:17:51.5 |
HIP 45272 |
4.90 |
| 2026-10-07 00:00 |
09:13:25.51 |
+21:17:29.6 |
HIP 45272 |
2.78 |
| 2026-10-07 12:00 |
09:13:34.37 |
+21:17:08.1 |
HIP 45272 |
0.69 |
| 2026-10-08 00:00 |
09:13:43.15 |
+21:16:47.0 |
HIP 45272 |
1.39 |
| 2026-10-08 12:00 |
09:13:51.86 |
+21:16:26.2 |
HIP 45272 |
3.44 |
| 2026-10-09 00:00 |
09:14:00.50 |
+21:16:05.8 |
HIP 45272 |
5.49 |
| 2026-10-09 12:00 |
09:14:09.07 |
+21:15:45.8 |
HIP 45272 |
7.51 |
| 2026-10-10 00:00 |
09:14:17.57 |
+21:15:26.1 |
HIP 45272 |
9.52 |
| 2026-10-10 12:00 |
09:14:25.99 |
+21:15:06.9 |
HIP 45272 |
11.50 |
| 2026-10-11 00:00 |
09:14:34.33 |
+21:14:48.0 |
HIP 45272 |
13.47 |