392P/LINEAR
| 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 |
0.999 |
| 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) |
| 2026-02-03 00:00 |
17:58:03.42 |
-27:27:51.7 |
HIP 88026 |
10.87 |
| 2026-02-03 12:00 |
17:58:14.79 |
-27:28:01.7 |
HIP 88026 |
8.60 |
| 2026-02-04 00:00 |
17:58:26.09 |
-27:28:11.6 |
HIP 88026 |
6.52 |
| 2026-02-04 12:00 |
17:58:37.33 |
-27:28:21.6 |
HIP 88026 |
4.87 |
| 2026-02-05 00:00 |
17:58:48.50 |
-27:28:31.6 |
HIP 88026 |
4.18 |
| 2026-02-05 12:00 |
17:58:59.61 |
-27:28:41.7 |
HIP 88026 |
4.84 |
| 2026-02-06 00:00 |
17:59:10.65 |
-27:28:51.7 |
HIP 88026 |
6.44 |
| 2026-02-06 12:00 |
17:59:21.61 |
-27:29:01.8 |
HIP 88026 |
8.44 |
| 2026-02-07 00:00 |
17:59:32.51 |
-27:29:11.9 |
HIP 88120 |
9.69 |
| 2026-02-07 12:00 |
17:59:43.34 |
-27:29:22.1 |
HIP 88120 |
8.65 |
| 2026-02-08 00:00 |
17:59:54.10 |
-27:29:32.3 |
HIP 88120 |
8.20 |
| 2026-02-08 12:00 |
18:00:04.79 |
-27:29:42.5 |
HIP 88120 |
8.43 |
| 2026-02-09 00:00 |
18:00:15.40 |
-27:29:52.7 |
HIP 88120 |
9.27 |
| 2026-02-09 12:00 |
18:00:25.95 |
-27:30:02.9 |
HIP 88120 |
10.57 |
| 2026-02-10 00:00 |
18:00:36.41 |
-27:30:13.2 |
HIP 88120 |
12.18 |
| 2026-02-10 12:00 |
18:00:46.81 |
-27:30:23.5 |
HIP 88120 |
13.97 |
| 2026-02-11 00:00 |
18:00:57.13 |
-27:30:33.9 |
HIP 88233 |
13.86 |
| 2026-02-11 12:00 |
18:01:07.38 |
-27:30:44.3 |
HIP 88233 |
13.61 |
| 2026-02-12 00:00 |
18:01:17.55 |
-27:30:54.7 |
HIP 88233 |
13.73 |
| 2026-02-12 12:00 |
18:01:27.64 |
-27:31:05.1 |
HIP 88233 |
14.22 |
| 2026-02-13 00:00 |
18:01:37.66 |
-27:31:15.6 |
HIP 88233 |
15.01 |
| 2026-02-13 12:00 |
18:01:47.60 |
-27:31:26.1 |
HIP 88233 |
16.07 |
| 2026-02-14 00:00 |
18:01:57.46 |
-27:31:36.7 |
HIP 88354 |
17.11 |
| 2026-02-14 12:00 |
18:02:07.24 |
-27:31:47.3 |
HIP 88354 |
16.06 |
| 2026-02-15 00:00 |
18:02:16.94 |
-27:31:57.9 |
HIP 88354 |
15.24 |
| 2026-02-15 12:00 |
18:02:26.56 |
-27:32:08.6 |
HIP 88354 |
14.71 |
| 2026-02-16 00:00 |
18:02:36.10 |
-27:32:19.2 |
HIP 88354 |
14.47 |
| 2026-02-16 12:00 |
18:02:45.56 |
-27:32:30.0 |
HIP 88354 |
14.53 |
| 2026-02-17 00:00 |
18:02:54.94 |
-27:32:40.7 |
HIP 88354 |
14.89 |
| 2026-02-17 12:00 |
18:03:04.24 |
-27:32:51.6 |
HIP 88354 |
15.51 |
| 2026-02-18 00:00 |
18:03:13.45 |
-27:33:02.4 |
HIP 88354 |
16.37 |
| 2026-02-18 12:00 |
18:03:22.57 |
-27:33:13.3 |
HIP 88354 |
17.40 |
| 2026-02-19 00:00 |
18:03:31.62 |
-27:33:24.2 |
HIP 88384 |
18.18 |
| 2026-02-19 12:00 |
18:03:40.57 |
-27:33:35.2 |
HIP 88384 |
19.01 |
| 2026-02-20 00:00 |
18:03:49.44 |
-27:33:46.2 |
HIP 88384 |
19.99 |
| 2026-02-20 12:00 |
18:03:58.23 |
-27:33:57.3 |
HIP 88384 |
21.10 |
| 2026-02-21 00:00 |
18:04:06.93 |
-27:34:08.4 |
HIP 88384 |
22.30 |
| 2026-02-21 12:00 |
18:04:15.54 |
-27:34:19.5 |
HIP 88384 |
23.59 |
| 2026-02-22 00:00 |
18:04:24.06 |
-27:34:30.7 |
HIP 88683 |
24.81 |
| 2026-02-22 12:00 |
18:04:32.50 |
-27:34:41.9 |
HIP 88683 |
23.02 |
| 2026-02-23 00:00 |
18:04:40.84 |
-27:34:53.2 |
HIP 88683 |
21.27 |
| 2026-02-23 12:00 |
18:04:49.10 |
-27:35:04.5 |
HIP 88683 |
19.56 |
| 2026-02-24 00:00 |
18:04:57.26 |
-27:35:15.9 |
HIP 88683 |
17.89 |