| Parameter |
Value |
| Designation |
359P/LONEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-08-21T04:24:35.637120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:34Z |
| Obs used |
133 |
| NEO |
- |
| M1 |
14.800 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2015-04-16.0000000 |
| e |
0.32248320 |
| q (au) |
3.137799 |
| a (au) |
4.631322 |
| i (deg) |
10.262827 |
| Ω (om, deg) |
149.806429 |
| ω (w, deg) |
200.248458 |
| M (ma, deg) |
275.135344 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.703 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.703 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.501 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
18:32:23.58 |
-13:39:17.1 |
HIP 90784 |
31.86 |
| 2026-03-26 12:00 |
18:32:41.13 |
-13:38:14.0 |
HIP 91089 |
32.96 |
| 2026-03-27 00:00 |
18:32:58.50 |
-13:37:10.8 |
HIP 91089 |
28.65 |
| 2026-03-27 12:00 |
18:33:15.68 |
-13:36:07.4 |
HIP 91089 |
24.40 |
| 2026-03-28 00:00 |
18:33:32.68 |
-13:35:03.9 |
HIP 91089 |
20.22 |
| 2026-03-28 12:00 |
18:33:49.49 |
-13:34:00.2 |
HIP 91089 |
16.11 |
| 2026-03-29 00:00 |
18:34:06.11 |
-13:32:56.4 |
HIP 91089 |
12.11 |
| 2026-03-29 12:00 |
18:34:22.54 |
-13:31:52.5 |
HIP 91089 |
8.33 |
| 2026-03-30 00:00 |
18:34:38.78 |
-13:30:48.4 |
HIP 91089 |
5.15 |
| 2026-03-30 12:00 |
18:34:54.83 |
-13:29:44.3 |
HIP 91089 |
4.10 |
| 2026-03-31 00:00 |
18:35:10.68 |
-13:28:40.0 |
HIP 91089 |
6.27 |
| 2026-03-31 12:00 |
18:35:26.35 |
-13:27:35.7 |
HIP 91089 |
9.64 |
| 2026-04-01 00:00 |
18:35:41.81 |
-13:26:31.2 |
HIP 91089 |
13.29 |
| 2026-04-01 12:00 |
18:35:57.09 |
-13:25:26.7 |
HIP 91089 |
17.01 |
| 2026-04-02 00:00 |
18:36:12.16 |
-13:24:22.1 |
HIP 91089 |
20.74 |
| 2026-04-02 12:00 |
18:36:27.04 |
-13:23:17.4 |
HIP 91349 |
22.07 |
| 2026-04-03 00:00 |
18:36:41.72 |
-13:22:12.7 |
HIP 91349 |
18.94 |
| 2026-04-03 12:00 |
18:36:56.20 |
-13:21:07.9 |
HIP 91349 |
16.11 |
| 2026-04-04 00:00 |
18:37:10.48 |
-13:20:03.0 |
HIP 91349 |
13.73 |
| 2026-04-04 12:00 |
18:37:24.56 |
-13:18:58.2 |
HIP 91349 |
12.03 |
| 2026-04-05 00:00 |
18:37:38.43 |
-13:17:53.3 |
HIP 91349 |
11.27 |
| 2026-04-05 12:00 |
18:37:52.10 |
-13:16:48.3 |
HIP 91349 |
11.60 |
| 2026-04-06 00:00 |
18:38:05.56 |
-13:15:43.4 |
HIP 91349 |
12.89 |
| 2026-04-06 12:00 |
18:38:18.82 |
-13:14:38.4 |
HIP 91349 |
14.87 |
| 2026-04-07 00:00 |
18:38:31.87 |
-13:13:33.5 |
HIP 91349 |
17.27 |
| 2026-04-07 12:00 |
18:38:44.70 |
-13:12:28.5 |
HIP 91349 |
19.92 |
| 2026-04-08 00:00 |
18:38:57.33 |
-13:11:23.6 |
HIP 91349 |
22.71 |
| 2026-04-08 12:00 |
18:39:09.75 |
-13:10:18.7 |
HIP 91349 |
25.57 |
| 2026-04-09 00:00 |
18:39:21.95 |
-13:09:13.8 |
HIP 91597 |
23.41 |
| 2026-04-09 12:00 |
18:39:33.94 |
-13:08:09.0 |
HIP 91597 |
21.45 |
| 2026-04-10 00:00 |
18:39:45.71 |
-13:07:04.2 |
HIP 91597 |
19.82 |
| 2026-04-10 12:00 |
18:39:57.27 |
-13:05:59.5 |
HIP 91597 |
18.59 |
| 2026-04-11 00:00 |
18:40:08.61 |
-13:04:54.8 |
HIP 91597 |
17.81 |
| 2026-04-11 12:00 |
18:40:19.73 |
-13:03:50.2 |
HIP 91597 |
17.53 |
| 2026-04-12 00:00 |
18:40:30.63 |
-13:02:45.7 |
HIP 91597 |
17.74 |
| 2026-04-12 12:00 |
18:40:41.31 |
-13:01:41.3 |
HIP 91597 |
18.40 |
| 2026-04-13 00:00 |
18:40:51.77 |
-13:00:37.0 |
HIP 91597 |
19.45 |
| 2026-04-13 12:00 |
18:41:02.00 |
-12:59:32.8 |
HIP 91597 |
20.80 |
| 2026-04-14 00:00 |
18:41:12.01 |
-12:58:28.7 |
HIP 91597 |
22.38 |
| 2026-04-14 12:00 |
18:41:21.80 |
-12:57:24.8 |
HIP 91597 |
24.13 |
| 2026-04-15 00:00 |
18:41:31.36 |
-12:56:21.0 |
HIP 91597 |
26.00 |
| 2026-04-15 12:00 |
18:41:40.69 |
-12:55:17.4 |
HIP 91597 |
27.95 |
| 2026-04-16 00:00 |
18:41:49.79 |
-12:54:13.9 |
HIP 91597 |
29.95 |