| 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) |
| 2026-05-12 00:00 |
20:28:30.37 |
-16:48:03.4 |
HIP 100975 |
32.00 |
| 2026-05-12 12:00 |
20:28:29.96 |
-16:47:55.7 |
HIP 100975 |
32.12 |
| 2026-05-13 00:00 |
20:28:29.46 |
-16:47:48.3 |
HIP 100975 |
32.24 |
| 2026-05-13 12:00 |
20:28:28.85 |
-16:47:41.3 |
HIP 100975 |
32.35 |
| 2026-05-14 00:00 |
20:28:28.15 |
-16:47:34.7 |
HIP 100975 |
32.45 |
| 2026-05-14 12:00 |
20:28:27.35 |
-16:47:28.4 |
HIP 100975 |
32.55 |
| 2026-05-15 00:00 |
20:28:26.45 |
-16:47:22.5 |
HIP 100975 |
32.65 |
| 2026-05-15 12:00 |
20:28:25.45 |
-16:47:16.9 |
HIP 100975 |
32.74 |
| 2026-05-16 00:00 |
20:28:24.36 |
-16:47:11.6 |
HIP 100975 |
32.82 |
| 2026-05-16 12:00 |
20:28:23.16 |
-16:47:06.8 |
HIP 100975 |
32.90 |
| 2026-05-17 00:00 |
20:28:21.87 |
-16:47:02.2 |
HIP 100975 |
32.98 |
| 2026-05-17 12:00 |
20:28:20.48 |
-16:46:58.1 |
HIP 100975 |
33.06 |
| 2026-05-18 00:00 |
20:28:18.99 |
-16:46:54.2 |
HIP 100975 |
33.13 |
| 2026-05-18 12:00 |
20:28:17.41 |
-16:46:50.8 |
HIP 100975 |
33.21 |
| 2026-05-19 00:00 |
20:28:15.73 |
-16:46:47.7 |
HIP 100975 |
33.28 |
| 2026-05-19 12:00 |
20:28:13.95 |
-16:46:44.9 |
HIP 100975 |
33.35 |
| 2026-05-20 00:00 |
20:28:12.07 |
-16:46:42.5 |
HIP 100975 |
33.43 |
| 2026-05-20 12:00 |
20:28:10.10 |
-16:46:40.5 |
HIP 100975 |
33.50 |
| 2026-05-21 00:00 |
20:28:08.03 |
-16:46:38.8 |
HIP 100975 |
33.58 |
| 2026-05-21 12:00 |
20:28:05.86 |
-16:46:37.5 |
HIP 100975 |
33.67 |
| 2026-05-22 00:00 |
20:28:03.60 |
-16:46:36.5 |
HIP 100975 |
33.76 |
| 2026-05-22 12:00 |
20:28:01.24 |
-16:46:35.8 |
HIP 100975 |
33.86 |
| 2026-05-23 00:00 |
20:27:58.79 |
-16:46:35.5 |
HIP 100975 |
33.96 |
| 2026-05-23 12:00 |
20:27:56.24 |
-16:46:35.6 |
HIP 100975 |
34.07 |
| 2026-05-24 00:00 |
20:27:53.60 |
-16:46:36.0 |
HIP 100975 |
34.19 |
| 2026-05-24 12:00 |
20:27:50.86 |
-16:46:36.8 |
HIP 100975 |
34.32 |
| 2026-05-25 00:00 |
20:27:48.03 |
-16:46:37.9 |
HIP 100975 |
34.47 |
| 2026-05-25 12:00 |
20:27:45.10 |
-16:46:39.3 |
HIP 100975 |
34.63 |
| 2026-05-26 00:00 |
20:27:42.08 |
-16:46:41.1 |
HIP 100975 |
34.80 |
| 2026-05-26 12:00 |
20:27:38.97 |
-16:46:43.3 |
HIP 100975 |
34.98 |
| 2026-05-27 00:00 |
20:27:35.76 |
-16:46:45.8 |
HIP 100975 |
35.19 |
| 2026-05-27 12:00 |
20:27:32.46 |
-16:46:48.6 |
HIP 100975 |
35.41 |
| 2026-05-28 00:00 |
20:27:29.07 |
-16:46:51.8 |
HIP 100975 |
35.65 |
| 2026-05-28 12:00 |
20:27:25.59 |
-16:46:55.3 |
HIP 100975 |
35.91 |
| 2026-05-29 00:00 |
20:27:22.01 |
-16:46:59.1 |
HIP 100975 |
36.19 |
| 2026-05-29 12:00 |
20:27:18.34 |
-16:47:03.3 |
HIP 100975 |
36.49 |
| 2026-05-30 00:00 |
20:27:14.58 |
-16:47:07.9 |
HIP 100975 |
36.82 |
| 2026-05-30 12:00 |
20:27:10.73 |
-16:47:12.7 |
HIP 100817 |
36.66 |
| 2026-05-31 00:00 |
20:27:06.79 |
-16:47:17.9 |
HIP 100730 |
36.08 |
| 2026-05-31 12:00 |
20:27:02.76 |
-16:47:23.5 |
HIP 100730 |
35.47 |
| 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 |