| Parameter |
Value |
| Designation |
314P/Montani |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-10-07T20:49:44.149440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:21Z |
| Obs used |
384 |
| NEO |
- |
| M1 |
12.600 |
| K1 |
5.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2011-10-21.0000000 |
| e |
0.41595010 |
| q (au) |
4.249163 |
| a (au) |
7.275343 |
| i (deg) |
3.976588 |
| Ω (om, deg) |
267.703383 |
| ω (w, deg) |
213.407905 |
| M (ma, deg) |
268.897663 |
Magnitude
Scatter + Global Linear
$$
M_a = (10.942 + 2.639\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
10.942 |
| n |
2.639 |
| gf |
1.000 |
| gb |
-0.944 |
| k |
1.000 |
| 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) |
| 2026-06-01 00:00 |
20:26:58.64 |
-16:47:29.4 |
HIP 100730 |
34.85 |
| 2026-06-01 12:00 |
20:26:54.43 |
-16:47:35.6 |
HIP 100730 |
34.25 |
| 2026-06-02 00:00 |
20:26:50.12 |
-16:47:42.1 |
HIP 100730 |
33.66 |
| 2026-06-02 12:00 |
20:26:45.74 |
-16:47:49.0 |
HIP 100730 |
33.08 |
| 2026-06-03 00:00 |
20:26:41.26 |
-16:47:56.2 |
HIP 100730 |
32.51 |
| 2026-06-03 12:00 |
20:26:36.69 |
-16:48:03.7 |
HIP 100730 |
31.96 |
| 2026-06-04 00:00 |
20:26:32.03 |
-16:48:11.6 |
HIP 100650 |
31.37 |
| 2026-06-04 12:00 |
20:26:27.29 |
-16:48:19.8 |
HIP 100650 |
30.27 |
| 2026-06-05 00:00 |
20:26:22.46 |
-16:48:28.3 |
HIP 100650 |
29.16 |
| 2026-06-05 12:00 |
20:26:17.55 |
-16:48:37.2 |
HIP 100650 |
28.03 |
| 2026-06-06 00:00 |
20:26:12.54 |
-16:48:46.3 |
HIP 100650 |
26.89 |
| 2026-06-06 12:00 |
20:26:07.45 |
-16:48:55.8 |
HIP 100650 |
25.73 |
| 2026-06-07 00:00 |
20:26:02.28 |
-16:49:05.6 |
HIP 100650 |
24.56 |
| 2026-06-07 12:00 |
20:25:57.02 |
-16:49:15.8 |
HIP 100650 |
23.37 |
| 2026-06-08 00:00 |
20:25:51.68 |
-16:49:26.2 |
HIP 100650 |
22.18 |
| 2026-06-08 12:00 |
20:25:46.25 |
-16:49:37.0 |
HIP 100650 |
20.97 |
| 2026-06-09 00:00 |
20:25:40.73 |
-16:49:48.1 |
HIP 100650 |
19.76 |
| 2026-06-09 12:00 |
20:25:35.14 |
-16:49:59.5 |
HIP 100650 |
18.55 |
| 2026-06-10 00:00 |
20:25:29.46 |
-16:50:11.2 |
HIP 100650 |
17.33 |
| 2026-06-10 12:00 |
20:25:23.70 |
-16:50:23.2 |
HIP 100650 |
16.13 |
| 2026-06-11 00:00 |
20:25:17.86 |
-16:50:35.6 |
HIP 100650 |
14.94 |
| 2026-06-11 12:00 |
20:25:11.93 |
-16:50:48.2 |
HIP 100650 |
13.77 |
| 2026-06-12 00:00 |
20:25:05.93 |
-16:51:01.2 |
HIP 100650 |
12.64 |
| 2026-06-12 12:00 |
20:24:59.84 |
-16:51:14.4 |
HIP 100650 |
11.57 |
| 2026-06-13 00:00 |
20:24:53.68 |
-16:51:28.0 |
HIP 100650 |
10.58 |
| 2026-06-13 12:00 |
20:24:47.43 |
-16:51:41.9 |
HIP 100650 |
9.71 |
| 2026-06-14 00:00 |
20:24:41.11 |
-16:51:56.0 |
HIP 100650 |
9.00 |
| 2026-06-14 12:00 |
20:24:34.71 |
-16:52:10.5 |
HIP 100650 |
8.51 |
| 2026-06-15 00:00 |
20:24:28.23 |
-16:52:25.3 |
HIP 100650 |
8.27 |
| 2026-06-15 12:00 |
20:24:21.68 |
-16:52:40.3 |
HIP 100650 |
8.33 |
| 2026-06-16 00:00 |
20:24:15.05 |
-16:52:55.7 |
HIP 100650 |
8.69 |
| 2026-06-16 12:00 |
20:24:08.35 |
-16:53:11.3 |
HIP 100650 |
9.32 |
| 2026-06-17 00:00 |
20:24:01.57 |
-16:53:27.2 |
HIP 100650 |
10.18 |
| 2026-06-17 12:00 |
20:23:54.72 |
-16:53:43.4 |
HIP 100650 |
11.23 |
| 2026-06-18 00:00 |
20:23:47.80 |
-16:53:59.9 |
HIP 100650 |
12.42 |
| 2026-06-18 12:00 |
20:23:40.80 |
-16:54:16.6 |
HIP 100650 |
13.73 |
| 2026-06-19 00:00 |
20:23:33.74 |
-16:54:33.7 |
HIP 100650 |
15.13 |
| 2026-06-19 12:00 |
20:23:26.60 |
-16:54:51.0 |
HIP 100650 |
16.61 |
| 2026-06-20 00:00 |
20:23:19.40 |
-16:55:08.5 |
HIP 100650 |
18.14 |
| 2026-06-20 12:00 |
20:23:12.12 |
-16:55:26.4 |
HIP 100445 |
16.83 |
| 2026-06-21 00:00 |
20:23:04.78 |
-16:55:44.5 |
HIP 100445 |
15.52 |
| 2026-06-21 12:00 |
20:22:57.38 |
-16:56:02.8 |
HIP 100445 |
14.30 |
| 2026-06-22 00:00 |
20:22:49.90 |
-16:56:21.4 |
HIP 100445 |
13.21 |