| Parameter |
Value |
| Designation |
C/2014 N2 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-10-08T05:29:04.395840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:57Z |
| Obs used |
50 |
| NEO |
- |
| M1 |
12.000 |
| K1 |
15.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-08-04.0000000 |
| e |
0.99954235 |
| q (au) |
2.184402 |
| a (au) |
4773.044196 |
| i (deg) |
133.013197 |
| Ω (om, deg) |
143.804180 |
| ω (w, deg) |
237.860749 |
| M (ma, deg) |
359.999805 |
Magnitude
Scatter + Global Linear
$$
M_a = (19.001 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
19.001 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-05-12 00:00 |
08:46:36.92 |
+36:21:54.3 |
HIP 43155 |
10.87 |
| 2026-05-12 12:00 |
08:46:37.76 |
+36:21:35.3 |
HIP 43155 |
10.89 |
| 2026-05-13 00:00 |
08:46:38.65 |
+36:21:16.3 |
HIP 43155 |
10.91 |
| 2026-05-13 12:00 |
08:46:39.58 |
+36:20:57.1 |
HIP 43155 |
10.94 |
| 2026-05-14 00:00 |
08:46:40.55 |
+36:20:37.9 |
HIP 43155 |
10.98 |
| 2026-05-14 12:00 |
08:46:41.57 |
+36:20:18.5 |
HIP 43155 |
11.02 |
| 2026-05-15 00:00 |
08:46:42.62 |
+36:19:59.1 |
HIP 43155 |
11.07 |
| 2026-05-15 12:00 |
08:46:43.72 |
+36:19:39.7 |
HIP 43155 |
11.13 |
| 2026-05-16 00:00 |
08:46:44.86 |
+36:19:20.1 |
HIP 43155 |
11.20 |
| 2026-05-16 12:00 |
08:46:46.04 |
+36:19:00.5 |
HIP 43155 |
11.28 |
| 2026-05-17 00:00 |
08:46:47.27 |
+36:18:40.8 |
HIP 43155 |
11.36 |
| 2026-05-17 12:00 |
08:46:48.53 |
+36:18:21.0 |
HIP 43155 |
11.46 |
| 2026-05-18 00:00 |
08:46:49.84 |
+36:18:01.1 |
HIP 43155 |
11.57 |
| 2026-05-18 12:00 |
08:46:51.18 |
+36:17:41.2 |
HIP 43155 |
11.68 |
| 2026-05-19 00:00 |
08:46:52.57 |
+36:17:21.3 |
HIP 43155 |
11.81 |
| 2026-05-19 12:00 |
08:46:54.00 |
+36:17:01.2 |
HIP 43155 |
11.95 |
| 2026-05-20 00:00 |
08:46:55.47 |
+36:16:41.1 |
HIP 43155 |
12.10 |
| 2026-05-20 12:00 |
08:46:56.97 |
+36:16:21.0 |
HIP 43155 |
12.27 |
| 2026-05-21 00:00 |
08:46:58.52 |
+36:16:00.8 |
HIP 43155 |
12.44 |
| 2026-05-21 12:00 |
08:47:00.11 |
+36:15:40.5 |
HIP 43155 |
12.63 |
| 2026-05-22 00:00 |
08:47:01.74 |
+36:15:20.2 |
HIP 43155 |
12.83 |
| 2026-05-22 12:00 |
08:47:03.40 |
+36:14:59.8 |
HIP 43155 |
13.04 |
| 2026-05-23 00:00 |
08:47:05.11 |
+36:14:39.4 |
HIP 43155 |
13.26 |
| 2026-05-23 12:00 |
08:47:06.85 |
+36:14:18.9 |
HIP 43155 |
13.50 |
| 2026-05-24 00:00 |
08:47:08.64 |
+36:13:58.4 |
HIP 43155 |
13.75 |
| 2026-05-24 12:00 |
08:47:10.46 |
+36:13:37.8 |
HIP 43155 |
14.01 |
| 2026-05-25 00:00 |
08:47:12.32 |
+36:13:17.2 |
HIP 43155 |
14.28 |
| 2026-05-25 12:00 |
08:47:14.21 |
+36:12:56.5 |
HIP 43155 |
14.57 |
| 2026-05-26 00:00 |
08:47:16.15 |
+36:12:35.8 |
HIP 43155 |
14.86 |
| 2026-05-26 12:00 |
08:47:18.12 |
+36:12:15.1 |
HIP 43155 |
15.17 |
| 2026-05-27 00:00 |
08:47:20.13 |
+36:11:54.3 |
HIP 43155 |
15.50 |
| 2026-05-27 12:00 |
08:47:22.18 |
+36:11:33.5 |
HIP 43155 |
15.83 |
| 2026-05-28 00:00 |
08:47:24.26 |
+36:11:12.7 |
HIP 43155 |
16.17 |
| 2026-05-28 12:00 |
08:47:26.38 |
+36:10:51.8 |
HIP 43155 |
16.53 |
| 2026-05-29 00:00 |
08:47:28.54 |
+36:10:30.9 |
HIP 43155 |
16.90 |
| 2026-05-29 12:00 |
08:47:30.73 |
+36:10:10.0 |
HIP 43155 |
17.28 |
| 2026-05-30 00:00 |
08:47:32.96 |
+36:09:49.1 |
HIP 43155 |
17.67 |
| 2026-05-30 12:00 |
08:47:35.23 |
+36:09:28.1 |
HIP 43155 |
18.07 |
| 2026-05-31 00:00 |
08:47:37.53 |
+36:09:07.1 |
HIP 43155 |
18.48 |
| 2026-05-31 12:00 |
08:47:39.86 |
+36:08:46.0 |
HIP 43155 |
18.91 |
| 2026-06-01 00:00 |
08:47:42.24 |
+36:08:25.0 |
HIP 43155 |
19.34 |
| 2026-06-01 12:00 |
08:47:44.64 |
+36:08:03.9 |
HIP 43155 |
19.78 |
| 2026-06-02 00:00 |
08:47:47.08 |
+36:07:42.8 |
HIP 43155 |
20.24 |