| Parameter |
Value |
| Designation |
150P/LONEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-07-24T04:17:08.301120Z |
| Orbit solution date (soln_date, UTC) |
2026-09-04T08:42:17Z |
| Obs used |
1367 |
| NEO |
- |
| M1 |
15.800 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2019-09-28.0000000 |
| e |
0.54648650 |
| q (au) |
1.759848 |
| a (au) |
3.880476 |
| i (deg) |
18.508000 |
| Ω (om, deg) |
272.407063 |
| ω (w, deg) |
245.609431 |
| M (ma, deg) |
149.672490 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.918 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.918 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.616 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
20:18:40.45 |
-04:44:20.1 |
HIP 100072 |
7.61 |
| 2026-09-20 12:00 |
20:18:33.75 |
-04:45:29.1 |
HIP 100072 |
6.17 |
| 2026-09-21 00:00 |
20:18:27.24 |
-04:46:37.8 |
HIP 100072 |
5.19 |
| 2026-09-21 12:00 |
20:18:20.92 |
-04:47:46.1 |
HIP 100072 |
4.88 |
| 2026-09-22 00:00 |
20:18:14.78 |
-04:48:54.2 |
HIP 100072 |
5.32 |
| 2026-09-22 12:00 |
20:18:08.83 |
-04:50:01.9 |
HIP 100072 |
6.32 |
| 2026-09-23 00:00 |
20:18:03.06 |
-04:51:09.2 |
HIP 100072 |
7.64 |
| 2026-09-23 12:00 |
20:17:57.49 |
-04:52:16.2 |
HIP 100072 |
9.11 |
| 2026-09-24 00:00 |
20:17:52.10 |
-04:53:22.8 |
HIP 100072 |
10.65 |
| 2026-09-24 12:00 |
20:17:46.89 |
-04:54:29.1 |
HIP 100072 |
12.21 |
| 2026-09-25 00:00 |
20:17:41.88 |
-04:55:35.0 |
HIP 100072 |
13.78 |
| 2026-09-25 12:00 |
20:17:37.05 |
-04:56:40.5 |
HIP 100072 |
15.34 |
| 2026-09-26 00:00 |
20:17:32.41 |
-04:57:45.6 |
HIP 100072 |
16.88 |
| 2026-09-26 12:00 |
20:17:27.95 |
-04:58:50.3 |
HIP 100072 |
18.40 |
| 2026-09-27 00:00 |
20:17:23.69 |
-04:59:54.6 |
HIP 100072 |
19.88 |
| 2026-09-27 12:00 |
20:17:19.61 |
-05:00:58.4 |
HIP 100072 |
21.34 |
| 2026-09-28 00:00 |
20:17:15.72 |
-05:02:01.9 |
HIP 100072 |
22.77 |
| 2026-09-28 12:00 |
20:17:12.02 |
-05:03:04.9 |
HIP 100072 |
24.16 |
| 2026-09-29 00:00 |
20:17:08.50 |
-05:04:07.5 |
HIP 100072 |
25.52 |
| 2026-09-29 12:00 |
20:17:05.17 |
-05:05:09.6 |
HIP 100072 |
26.85 |
| 2026-09-30 00:00 |
20:17:02.03 |
-05:06:11.3 |
HIP 100072 |
28.14 |
| 2026-09-30 12:00 |
20:16:59.08 |
-05:07:12.6 |
HIP 100072 |
29.40 |
| 2026-10-01 00:00 |
20:16:56.31 |
-05:08:13.3 |
HIP 100072 |
30.62 |
| 2026-10-01 12:00 |
20:16:53.73 |
-05:09:13.6 |
HIP 100072 |
31.81 |
| 2026-10-02 00:00 |
20:16:51.34 |
-05:10:13.5 |
HIP 99838 |
31.01 |
| 2026-10-02 12:00 |
20:16:49.14 |
-05:11:12.8 |
HIP 99838 |
29.92 |
| 2026-10-03 00:00 |
20:16:47.12 |
-05:12:11.7 |
HIP 99838 |
28.88 |
| 2026-10-03 12:00 |
20:16:45.29 |
-05:13:10.0 |
HIP 99838 |
27.88 |
| 2026-10-04 00:00 |
20:16:43.65 |
-05:14:07.9 |
HIP 99838 |
26.92 |
| 2026-10-04 12:00 |
20:16:42.20 |
-05:15:05.2 |
HIP 99838 |
26.02 |
| 2026-10-05 00:00 |
20:16:40.93 |
-05:16:02.0 |
HIP 99838 |
25.16 |
| 2026-10-05 12:00 |
20:16:39.85 |
-05:16:58.3 |
HIP 99838 |
24.36 |
| 2026-10-06 00:00 |
20:16:38.96 |
-05:17:54.0 |
HIP 99838 |
23.61 |
| 2026-10-06 12:00 |
20:16:38.25 |
-05:18:49.3 |
HIP 99838 |
22.92 |
| 2026-10-07 00:00 |
20:16:37.73 |
-05:19:43.9 |
HIP 99838 |
22.30 |
| 2026-10-07 12:00 |
20:16:37.40 |
-05:20:38.0 |
HIP 99838 |
21.74 |
| 2026-10-08 00:00 |
20:16:37.25 |
-05:21:31.6 |
HIP 99838 |
21.24 |
| 2026-10-08 12:00 |
20:16:37.29 |
-05:22:24.6 |
HIP 99838 |
20.82 |
| 2026-10-09 00:00 |
20:16:37.52 |
-05:23:17.0 |
HIP 99838 |
20.47 |
| 2026-10-09 12:00 |
20:16:37.93 |
-05:24:08.8 |
HIP 99838 |
20.21 |
| 2026-10-10 00:00 |
20:16:38.53 |
-05:25:00.0 |
HIP 99838 |
20.02 |
| 2026-10-10 12:00 |
20:16:39.31 |
-05:25:50.7 |
HIP 99838 |
19.92 |
| 2026-10-11 00:00 |
20:16:40.27 |
-05:26:40.7 |
HIP 99838 |
19.90 |