182P/LONEOS
| Parameter |
Value |
| Designation |
182P/LONEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-02-05T20:59:26.926080Z |
| Orbit solution date (soln_date, UTC) |
2024-10-31T13:12:28Z |
| Obs used |
200 |
| NEO |
Yes |
| M1 |
20.800 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2004-10-16.0000000 |
| e |
0.66631355 |
| q (au) |
0.978122 |
| a (au) |
2.931261 |
| i (deg) |
16.908572 |
| Ω (om, deg) |
75.096643 |
| ω (w, deg) |
51.438081 |
| M (ma, deg) |
194.466692 |
Magnitude
Scatter + Global Linear
$$
M_a = (17.640 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
17.640 |
| n |
6.000 |
| gf |
0.828 |
| gb |
-0.769 |
| k |
0.951 |
| δ90 |
3.889 |
| 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 |
22:22:22.74 |
-24:07:36.7 |
HIP 110529 |
41.17 |
| 2026-02-03 12:00 |
22:22:52.95 |
-24:04:31.5 |
HIP 110529 |
42.12 |
| 2026-02-04 00:00 |
22:23:23.20 |
-24:01:26.3 |
HIP 110616 |
42.59 |
| 2026-02-04 12:00 |
22:23:53.49 |
-23:58:21.0 |
HIP 110746 |
35.88 |
| 2026-02-05 00:00 |
22:24:23.83 |
-23:55:15.8 |
HIP 110746 |
28.33 |
| 2026-02-05 12:00 |
22:24:54.21 |
-23:52:10.5 |
HIP 110746 |
20.79 |
| 2026-02-06 00:00 |
22:25:24.63 |
-23:49:05.2 |
HIP 110746 |
13.32 |
| 2026-02-06 12:00 |
22:25:55.10 |
-23:45:59.9 |
HIP 110746 |
6.19 |
| 2026-02-07 00:00 |
22:26:25.61 |
-23:42:54.5 |
HIP 110746 |
3.94 |
| 2026-02-07 12:00 |
22:26:56.16 |
-23:39:49.2 |
HIP 110746 |
10.47 |
| 2026-02-08 00:00 |
22:27:26.75 |
-23:36:43.8 |
HIP 110746 |
17.92 |
| 2026-02-08 12:00 |
22:27:57.37 |
-23:33:38.5 |
HIP 110746 |
25.50 |
| 2026-02-09 00:00 |
22:28:28.04 |
-23:30:33.1 |
HIP 111054 |
28.39 |
| 2026-02-09 12:00 |
22:28:58.75 |
-23:27:27.8 |
HIP 111054 |
26.85 |
| 2026-02-10 00:00 |
22:29:29.50 |
-23:24:22.4 |
HIP 111054 |
27.46 |
| 2026-02-10 12:00 |
22:30:00.28 |
-23:21:17.1 |
HIP 111162 |
27.29 |
| 2026-02-11 00:00 |
22:30:31.10 |
-23:18:11.8 |
HIP 111162 |
20.82 |
| 2026-02-11 12:00 |
22:31:01.95 |
-23:15:06.5 |
HIP 111162 |
15.54 |
| 2026-02-12 00:00 |
22:31:32.85 |
-23:12:01.2 |
HIP 111162 |
13.02 |
| 2026-02-12 12:00 |
22:32:03.77 |
-23:08:56.0 |
HIP 111162 |
14.75 |
| 2026-02-13 00:00 |
22:32:34.73 |
-23:05:50.7 |
HIP 111162 |
19.66 |
| 2026-02-13 12:00 |
22:33:05.73 |
-23:02:45.6 |
HIP 111403 |
20.82 |
| 2026-02-14 00:00 |
22:33:36.75 |
-22:59:40.4 |
HIP 111403 |
19.41 |
| 2026-02-14 12:00 |
22:34:07.81 |
-22:56:35.3 |
HIP 111416 |
20.71 |
| 2026-02-15 00:00 |
22:34:38.90 |
-22:53:30.3 |
HIP 111416 |
17.82 |
| 2026-02-15 12:00 |
22:35:10.02 |
-22:50:25.3 |
HIP 111416 |
18.12 |
| 2026-02-16 00:00 |
22:35:41.17 |
-22:47:20.4 |
HIP 111416 |
21.48 |
| 2026-02-16 12:00 |
22:36:12.35 |
-22:44:15.5 |
HIP 111730 |
25.13 |
| 2026-02-17 00:00 |
22:36:43.56 |
-22:41:10.7 |
HIP 111730 |
17.48 |
| 2026-02-17 12:00 |
22:37:14.80 |
-22:38:06.0 |
HIP 111730 |
10.11 |
| 2026-02-18 00:00 |
22:37:46.06 |
-22:35:01.3 |
HIP 111730 |
4.64 |
| 2026-02-18 12:00 |
22:38:17.35 |
-22:31:56.8 |
HIP 111730 |
7.99 |
| 2026-02-19 00:00 |
22:38:48.67 |
-22:28:52.3 |
HIP 111830 |
10.23 |
| 2026-02-19 12:00 |
22:39:20.01 |
-22:25:47.9 |
HIP 111830 |
12.88 |
| 2026-02-20 00:00 |
22:39:51.38 |
-22:22:43.6 |
HIP 111830 |
18.74 |
| 2026-02-20 12:00 |
22:40:22.77 |
-22:19:39.4 |
HIP 111830 |
25.70 |
| 2026-02-21 00:00 |
22:40:54.18 |
-22:16:35.3 |
HIP 111830 |
33.07 |
| 2026-02-21 12:00 |
22:41:25.62 |
-22:13:31.3 |
HIP 112069 |
30.34 |
| 2026-02-22 00:00 |
22:41:57.07 |
-22:10:27.4 |
HIP 112069 |
26.28 |
| 2026-02-22 12:00 |
22:42:28.55 |
-22:07:23.7 |
HIP 112069 |
24.21 |
| 2026-02-23 00:00 |
22:43:00.05 |
-22:04:20.1 |
HIP 112069 |
24.64 |
| 2026-02-23 12:00 |
22:43:31.57 |
-22:01:16.6 |
HIP 112162 |
22.90 |
| 2026-02-24 00:00 |
22:44:03.10 |
-21:58:13.2 |
HIP 112162 |
23.57 |