| Parameter |
Value |
| Designation |
P/2019 LM4 (Palomar) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-06-18T05:44:43.520640Z |
| Orbit solution date (soln_date, UTC) |
2024-12-26T20:12:37Z |
| Obs used |
248 |
| NEO |
- |
| M1 |
13.400 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2020-04-23.0000000 |
| e |
0.58520723 |
| q (au) |
2.371614 |
| a (au) |
5.717588 |
| i (deg) |
36.394763 |
| Ω (om, deg) |
72.858371 |
| ω (w, deg) |
68.371061 |
| M (ma, deg) |
22.331143 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.257 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.257 |
| n |
6.000 |
| gf |
0.933 |
| gb |
-1.000 |
| k |
0.999 |
| δ90 |
5.833 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
22:53:56.07 |
-45:17:59.2 |
HIP 113061 |
11.03 |
| 2026-06-01 12:00 |
22:54:00.65 |
-45:19:47.4 |
HIP 113061 |
12.94 |
| 2026-06-02 00:00 |
22:54:05.09 |
-45:21:36.3 |
HIP 113061 |
14.86 |
| 2026-06-02 12:00 |
22:54:09.39 |
-45:23:25.9 |
HIP 113061 |
16.81 |
| 2026-06-03 00:00 |
22:54:13.56 |
-45:25:16.2 |
HIP 113061 |
18.77 |
| 2026-06-03 12:00 |
22:54:17.59 |
-45:27:07.1 |
HIP 113061 |
20.73 |
| 2026-06-04 00:00 |
22:54:21.48 |
-45:28:58.7 |
HIP 113057 |
19.73 |
| 2026-06-04 12:00 |
22:54:25.23 |
-45:30:50.9 |
HIP 113057 |
18.22 |
| 2026-06-05 00:00 |
22:54:28.85 |
-45:32:43.8 |
HIP 113057 |
16.79 |
| 2026-06-05 12:00 |
22:54:32.32 |
-45:34:37.3 |
HIP 113057 |
15.45 |
| 2026-06-06 00:00 |
22:54:35.66 |
-45:36:31.5 |
HIP 113057 |
14.25 |
| 2026-06-06 12:00 |
22:54:38.85 |
-45:38:26.2 |
HIP 113057 |
13.21 |
| 2026-06-07 00:00 |
22:54:41.90 |
-45:40:21.6 |
HIP 113057 |
12.38 |
| 2026-06-07 12:00 |
22:54:44.81 |
-45:42:17.6 |
HIP 113057 |
11.81 |
| 2026-06-08 00:00 |
22:54:47.58 |
-45:44:14.2 |
HIP 113100 |
10.60 |
| 2026-06-08 12:00 |
22:54:50.21 |
-45:46:11.3 |
HIP 113100 |
9.27 |
| 2026-06-09 00:00 |
22:54:52.69 |
-45:48:09.1 |
HIP 113100 |
8.19 |
| 2026-06-09 12:00 |
22:54:55.03 |
-45:50:07.5 |
HIP 113100 |
7.48 |
| 2026-06-10 00:00 |
22:54:57.22 |
-45:52:06.4 |
HIP 113100 |
7.24 |
| 2026-06-10 12:00 |
22:54:59.27 |
-45:54:05.8 |
HIP 113100 |
7.54 |
| 2026-06-11 00:00 |
22:55:01.17 |
-45:56:05.8 |
HIP 113100 |
8.31 |
| 2026-06-11 12:00 |
22:55:02.93 |
-45:58:06.4 |
HIP 113100 |
9.44 |
| 2026-06-12 00:00 |
22:55:04.54 |
-46:00:07.5 |
HIP 113100 |
10.82 |
| 2026-06-12 12:00 |
22:55:06.00 |
-46:02:09.1 |
HIP 113100 |
12.37 |
| 2026-06-13 00:00 |
22:55:07.32 |
-46:04:11.3 |
HIP 113100 |
14.04 |
| 2026-06-13 12:00 |
22:55:08.49 |
-46:06:13.9 |
HIP 113203 |
13.98 |
| 2026-06-14 00:00 |
22:55:09.51 |
-46:08:17.0 |
HIP 113203 |
11.96 |
| 2026-06-14 12:00 |
22:55:10.38 |
-46:10:20.6 |
HIP 113203 |
9.96 |
| 2026-06-15 00:00 |
22:55:11.10 |
-46:12:24.7 |
HIP 113203 |
8.00 |
| 2026-06-15 12:00 |
22:55:11.68 |
-46:14:29.3 |
HIP 113203 |
6.11 |
| 2026-06-16 00:00 |
22:55:12.10 |
-46:16:34.3 |
HIP 113203 |
4.42 |
| 2026-06-16 12:00 |
22:55:12.37 |
-46:18:39.7 |
HIP 113203 |
3.25 |
| 2026-06-17 00:00 |
22:55:12.50 |
-46:20:45.6 |
HIP 113203 |
3.24 |
| 2026-06-17 12:00 |
22:55:12.47 |
-46:22:51.9 |
HIP 113203 |
4.41 |
| 2026-06-18 00:00 |
22:55:12.30 |
-46:24:58.5 |
HIP 113142 |
5.17 |
| 2026-06-18 12:00 |
22:55:11.97 |
-46:27:05.6 |
HIP 113142 |
5.60 |
| 2026-06-19 00:00 |
22:55:11.49 |
-46:29:13.1 |
HIP 113142 |
6.69 |
| 2026-06-19 12:00 |
22:55:10.86 |
-46:31:20.9 |
HIP 113142 |
8.18 |
| 2026-06-20 00:00 |
22:55:10.08 |
-46:33:29.1 |
HIP 113185 |
7.25 |
| 2026-06-20 12:00 |
22:55:09.15 |
-46:35:37.7 |
HIP 113185 |
5.12 |
| 2026-06-21 00:00 |
22:55:08.06 |
-46:37:46.5 |
HIP 113185 |
3.00 |
| 2026-06-21 12:00 |
22:55:06.83 |
-46:39:55.7 |
HIP 113185 |
1.09 |
| 2026-06-22 00:00 |
22:55:05.44 |
-46:42:05.3 |
HIP 113185 |
1.67 |