| Parameter |
Value |
| Designation |
392P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2005-01-10T10:13:16.317120Z |
| Orbit solution date (soln_date, UTC) |
2021-05-02T23:43:04Z |
| Obs used |
387 |
| NEO |
- |
| M1 |
16.400 |
| K1 |
6.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-10-26T23:06:55.296000Z |
| Discovery magnitude (MPC) |
19.20 R |
| Discovery observatory (MPC) |
K88 · GINOP-KHK, Piszkéstető |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2007-07-23.0000000 |
| e |
0.68253089 |
| q (au) |
1.954181 |
| a (au) |
6.155501 |
| i (deg) |
4.936928 |
| Ω (om, deg) |
25.107005 |
| ω (w, deg) |
71.998314 |
| M (ma, deg) |
59.604733 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.743 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.743 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.765 |
| k |
0.987 |
| 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) |
| 2026-07-29 00:00 |
17:37:12.66 |
-28:08:27.7 |
HIP 86317 |
14.26 |
| 2026-07-29 12:00 |
17:37:04.67 |
-28:08:14.5 |
HIP 86317 |
15.81 |
| 2026-07-30 00:00 |
17:36:56.77 |
-28:08:01.3 |
HIP 86317 |
17.39 |
| 2026-07-30 12:00 |
17:36:48.96 |
-28:07:48.1 |
HIP 86317 |
18.98 |
| 2026-07-31 00:00 |
17:36:41.24 |
-28:07:34.7 |
HIP 86052 |
20.55 |
| 2026-07-31 12:00 |
17:36:33.61 |
-28:07:21.3 |
HIP 86052 |
18.97 |
| 2026-08-01 00:00 |
17:36:26.07 |
-28:07:07.9 |
HIP 86052 |
17.44 |
| 2026-08-01 12:00 |
17:36:18.62 |
-28:06:54.4 |
HIP 86052 |
15.95 |
| 2026-08-02 00:00 |
17:36:11.27 |
-28:06:40.8 |
HIP 86052 |
14.51 |
| 2026-08-02 12:00 |
17:36:04.01 |
-28:06:27.2 |
HIP 86052 |
13.15 |
| 2026-08-03 00:00 |
17:35:56.85 |
-28:06:13.5 |
HIP 86052 |
11.86 |
| 2026-08-03 12:00 |
17:35:49.78 |
-28:05:59.8 |
HIP 86052 |
10.68 |
| 2026-08-04 00:00 |
17:35:42.80 |
-28:05:46.0 |
HIP 86052 |
9.62 |
| 2026-08-04 12:00 |
17:35:35.92 |
-28:05:32.2 |
HIP 86052 |
8.73 |
| 2026-08-05 00:00 |
17:35:29.14 |
-28:05:18.3 |
HIP 86052 |
8.05 |
| 2026-08-05 12:00 |
17:35:22.46 |
-28:05:04.4 |
HIP 86052 |
7.62 |
| 2026-08-06 00:00 |
17:35:15.87 |
-28:04:50.5 |
HIP 86052 |
7.47 |
| 2026-08-06 12:00 |
17:35:09.38 |
-28:04:36.5 |
HIP 86052 |
7.61 |
| 2026-08-07 00:00 |
17:35:02.99 |
-28:04:22.5 |
HIP 86052 |
8.01 |
| 2026-08-07 12:00 |
17:34:56.70 |
-28:04:08.5 |
HIP 86052 |
8.62 |
| 2026-08-08 00:00 |
17:34:50.51 |
-28:03:54.4 |
HIP 86052 |
9.40 |
| 2026-08-08 12:00 |
17:34:44.43 |
-28:03:40.4 |
HIP 86052 |
10.29 |
| 2026-08-09 00:00 |
17:34:38.44 |
-28:03:26.2 |
HIP 86052 |
11.26 |
| 2026-08-09 12:00 |
17:34:32.56 |
-28:03:12.1 |
HIP 86052 |
12.28 |
| 2026-08-10 00:00 |
17:34:26.77 |
-28:02:58.0 |
HIP 86052 |
13.35 |
| 2026-08-10 12:00 |
17:34:21.09 |
-28:02:43.8 |
HIP 86052 |
14.43 |
| 2026-08-11 00:00 |
17:34:15.52 |
-28:02:29.6 |
HIP 86052 |
15.52 |
| 2026-08-11 12:00 |
17:34:10.05 |
-28:02:15.4 |
HIP 86052 |
16.62 |
| 2026-08-12 00:00 |
17:34:04.68 |
-28:02:01.2 |
HIP 86052 |
17.72 |
| 2026-08-12 12:00 |
17:33:59.42 |
-28:01:47.0 |
HIP 86052 |
18.81 |
| 2026-08-13 00:00 |
17:33:54.27 |
-28:01:32.8 |
HIP 86052 |
19.89 |
| 2026-08-13 12:00 |
17:33:49.22 |
-28:01:18.6 |
HIP 86052 |
20.96 |
| 2026-08-14 00:00 |
17:33:44.28 |
-28:01:04.4 |
HIP 86052 |
22.02 |
| 2026-08-14 12:00 |
17:33:39.44 |
-28:00:50.1 |
HIP 86052 |
23.06 |
| 2026-08-15 00:00 |
17:33:34.71 |
-28:00:35.9 |
HIP 85802 |
22.67 |
| 2026-08-15 12:00 |
17:33:30.09 |
-28:00:21.7 |
HIP 85802 |
21.77 |
| 2026-08-16 00:00 |
17:33:25.58 |
-28:00:07.5 |
HIP 85802 |
20.90 |
| 2026-08-16 12:00 |
17:33:21.17 |
-27:59:53.3 |
HIP 85802 |
20.07 |
| 2026-08-17 00:00 |
17:33:16.88 |
-27:59:39.1 |
HIP 85802 |
19.28 |
| 2026-08-17 12:00 |
17:33:12.69 |
-27:59:25.0 |
HIP 85802 |
18.53 |
| 2026-08-18 00:00 |
17:33:08.61 |
-27:59:10.8 |
HIP 85802 |
17.82 |
| 2026-08-18 12:00 |
17:33:04.64 |
-27:58:56.7 |
HIP 85802 |
17.15 |
| 2026-08-19 00:00 |
17:33:00.78 |
-27:58:42.5 |
HIP 85802 |
16.53 |