P/2014 L3 (Hill)
| Parameter |
Value |
| Designation |
P/2014 L3 (Hill) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-06-28T13:42:58.343040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:55Z |
| Obs used |
204 |
| NEO |
- |
| M1 |
17.200 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-07-20.0000000 |
| e |
0.77309415 |
| q (au) |
1.853963 |
| a (au) |
8.170627 |
| i (deg) |
6.264056 |
| Ω (om, deg) |
115.566369 |
| ω (w, deg) |
178.609914 |
| M (ma, deg) |
0.904300 |
Magnitude
Scatter + Global Linear
$$
M_a = (18.106 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
18.106 |
| n |
2.000 |
| gf |
0.998 |
| gb |
-0.631 |
| 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) |
| 2026-02-03 00:00 |
07:37:06.85 |
+21:22:33.3 |
HIP 37084 |
1.59 |
| 2026-02-03 12:00 |
07:36:59.29 |
+21:22:52.7 |
HIP 37084 |
3.38 |
| 2026-02-04 00:00 |
07:36:51.76 |
+21:23:12.1 |
HIP 37084 |
5.16 |
| 2026-02-04 12:00 |
07:36:44.27 |
+21:23:31.3 |
HIP 37084 |
6.93 |
| 2026-02-05 00:00 |
07:36:36.81 |
+21:23:50.5 |
HIP 37084 |
8.69 |
| 2026-02-05 12:00 |
07:36:29.39 |
+21:24:09.6 |
HIP 37084 |
10.45 |
| 2026-02-06 00:00 |
07:36:22.00 |
+21:24:28.5 |
HIP 37084 |
12.20 |
| 2026-02-06 12:00 |
07:36:14.65 |
+21:24:47.4 |
HIP 37084 |
13.94 |
| 2026-02-07 00:00 |
07:36:07.34 |
+21:25:06.1 |
HIP 37084 |
15.67 |
| 2026-02-07 12:00 |
07:36:00.06 |
+21:25:24.8 |
HIP 37084 |
17.39 |
| 2026-02-08 00:00 |
07:35:52.82 |
+21:25:43.3 |
HIP 37084 |
19.10 |
| 2026-02-08 12:00 |
07:35:45.63 |
+21:26:01.7 |
HIP 37084 |
20.81 |
| 2026-02-09 00:00 |
07:35:38.47 |
+21:26:20.0 |
HIP 37084 |
22.50 |
| 2026-02-09 12:00 |
07:35:31.36 |
+21:26:38.2 |
HIP 37084 |
24.18 |
| 2026-02-10 00:00 |
07:35:24.28 |
+21:26:56.3 |
HIP 37084 |
25.85 |
| 2026-02-10 12:00 |
07:35:17.25 |
+21:27:14.3 |
HIP 36789 |
26.71 |
| 2026-02-11 00:00 |
07:35:10.27 |
+21:27:32.2 |
HIP 36789 |
25.88 |
| 2026-02-11 12:00 |
07:35:03.33 |
+21:27:49.9 |
HIP 36789 |
25.13 |
| 2026-02-12 00:00 |
07:34:56.43 |
+21:28:07.5 |
HIP 36789 |
24.48 |
| 2026-02-12 12:00 |
07:34:49.57 |
+21:28:25.1 |
HIP 36789 |
23.92 |
| 2026-02-13 00:00 |
07:34:42.77 |
+21:28:42.4 |
HIP 36789 |
23.46 |
| 2026-02-13 12:00 |
07:34:36.01 |
+21:28:59.7 |
HIP 36789 |
23.11 |
| 2026-02-14 00:00 |
07:34:29.30 |
+21:29:16.9 |
HIP 36789 |
22.87 |
| 2026-02-14 12:00 |
07:34:22.63 |
+21:29:33.9 |
HIP 36789 |
22.74 |
| 2026-02-15 00:00 |
07:34:16.02 |
+21:29:50.8 |
HIP 36789 |
22.71 |
| 2026-02-15 12:00 |
07:34:09.45 |
+21:30:07.5 |
HIP 36789 |
22.79 |
| 2026-02-16 00:00 |
07:34:02.94 |
+21:30:24.2 |
HIP 36663 |
21.41 |
| 2026-02-16 12:00 |
07:33:56.47 |
+21:30:40.7 |
HIP 36663 |
20.05 |
| 2026-02-17 00:00 |
07:33:50.06 |
+21:30:57.1 |
HIP 36663 |
18.73 |
| 2026-02-17 12:00 |
07:33:43.70 |
+21:31:13.3 |
HIP 36663 |
17.45 |
| 2026-02-18 00:00 |
07:33:37.39 |
+21:31:29.4 |
HIP 36663 |
16.22 |
| 2026-02-18 12:00 |
07:33:31.14 |
+21:31:45.4 |
HIP 36663 |
15.05 |
| 2026-02-19 00:00 |
07:33:24.94 |
+21:32:01.2 |
HIP 36663 |
13.95 |
| 2026-02-19 12:00 |
07:33:18.80 |
+21:32:17.0 |
HIP 36663 |
12.93 |
| 2026-02-20 00:00 |
07:33:12.71 |
+21:32:32.5 |
HIP 36663 |
12.00 |
| 2026-02-20 12:00 |
07:33:06.68 |
+21:32:48.0 |
HIP 36663 |
11.19 |
| 2026-02-21 00:00 |
07:33:00.70 |
+21:33:03.3 |
HIP 36663 |
10.52 |
| 2026-02-21 12:00 |
07:32:54.78 |
+21:33:18.4 |
HIP 36663 |
10.01 |
| 2026-02-22 00:00 |
07:32:48.92 |
+21:33:33.4 |
HIP 36663 |
9.68 |
| 2026-02-22 12:00 |
07:32:43.11 |
+21:33:48.3 |
HIP 36663 |
9.55 |
| 2026-02-23 00:00 |
07:32:37.37 |
+21:34:03.0 |
HIP 36663 |
9.60 |
| 2026-02-23 12:00 |
07:32:31.68 |
+21:34:17.6 |
HIP 36663 |
9.85 |
| 2026-02-24 00:00 |
07:32:26.06 |
+21:34:32.1 |
HIP 36663 |
10.25 |