| Parameter |
Value |
| Designation |
492P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-10-19T14:24:35.294400Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T11:43:24Z |
| Obs used |
802 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
9.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-07-18T11:25:10.848000Z |
| Discovery magnitude (MPC) |
19.90 r |
| Discovery observatory (MPC) |
I41 · Palomar Mountain–ZTF |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2013-12-01.0000000 |
| e |
0.69164881 |
| q (au) |
1.771711 |
| a (au) |
5.745757 |
| i (deg) |
11.457418 |
| Ω (om, deg) |
11.488927 |
| ω (w, deg) |
41.023047 |
| M (ma, deg) |
81.466296 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.416 + 4.211\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.416 |
| n |
4.211 |
| gf |
0.999 |
| gb |
-1.000 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
11:42:32.92 |
+03:25:53.1 |
HIP 57028 |
29.20 |
| 2026-06-01 12:00 |
11:42:34.21 |
+03:25:14.4 |
HIP 57028 |
29.92 |
| 2026-06-02 00:00 |
11:42:35.65 |
+03:24:34.8 |
HIP 57028 |
30.67 |
| 2026-06-02 12:00 |
11:42:37.26 |
+03:23:54.3 |
HIP 57028 |
31.45 |
| 2026-06-03 00:00 |
11:42:39.02 |
+03:23:12.8 |
HIP 57084 |
31.41 |
| 2026-06-03 12:00 |
11:42:40.94 |
+03:22:30.5 |
HIP 57084 |
30.85 |
| 2026-06-04 00:00 |
11:42:43.01 |
+03:21:47.2 |
HIP 57084 |
30.29 |
| 2026-06-04 12:00 |
11:42:45.24 |
+03:21:03.0 |
HIP 57084 |
29.75 |
| 2026-06-05 00:00 |
11:42:47.63 |
+03:20:17.9 |
HIP 57084 |
29.22 |
| 2026-06-05 12:00 |
11:42:50.17 |
+03:19:31.9 |
HIP 57084 |
28.72 |
| 2026-06-06 00:00 |
11:42:52.87 |
+03:18:45.1 |
HIP 57084 |
28.24 |
| 2026-06-06 12:00 |
11:42:55.72 |
+03:17:57.3 |
HIP 57084 |
27.80 |
| 2026-06-07 00:00 |
11:42:58.72 |
+03:17:08.6 |
HIP 57084 |
27.40 |
| 2026-06-07 12:00 |
11:43:01.87 |
+03:16:19.0 |
HIP 57084 |
27.04 |
| 2026-06-08 00:00 |
11:43:05.18 |
+03:15:28.6 |
HIP 57084 |
26.73 |
| 2026-06-08 12:00 |
11:43:08.64 |
+03:14:37.3 |
HIP 57084 |
26.48 |
| 2026-06-09 00:00 |
11:43:12.25 |
+03:13:45.1 |
HIP 57084 |
26.29 |
| 2026-06-09 12:00 |
11:43:16.00 |
+03:12:52.0 |
HIP 57084 |
26.18 |
| 2026-06-10 00:00 |
11:43:19.91 |
+03:11:58.1 |
HIP 57302 |
25.95 |
| 2026-06-10 12:00 |
11:43:23.97 |
+03:11:03.3 |
HIP 57302 |
24.71 |
| 2026-06-11 00:00 |
11:43:28.17 |
+03:10:07.6 |
HIP 57302 |
23.46 |
| 2026-06-11 12:00 |
11:43:32.52 |
+03:09:11.1 |
HIP 57302 |
22.18 |
| 2026-06-12 00:00 |
11:43:37.02 |
+03:08:13.7 |
HIP 57302 |
20.89 |
| 2026-06-12 12:00 |
11:43:41.67 |
+03:07:15.5 |
HIP 57302 |
19.58 |
| 2026-06-13 00:00 |
11:43:46.46 |
+03:06:16.5 |
HIP 57302 |
18.26 |
| 2026-06-13 12:00 |
11:43:51.39 |
+03:05:16.6 |
HIP 57302 |
16.95 |
| 2026-06-14 00:00 |
11:43:56.47 |
+03:04:15.8 |
HIP 57302 |
15.66 |
| 2026-06-14 12:00 |
11:44:01.69 |
+03:03:14.3 |
HIP 57302 |
14.39 |
| 2026-06-15 00:00 |
11:44:07.06 |
+03:02:11.9 |
HIP 57302 |
13.18 |
| 2026-06-15 12:00 |
11:44:12.57 |
+03:01:08.7 |
HIP 57302 |
12.05 |
| 2026-06-16 00:00 |
11:44:18.22 |
+03:00:04.6 |
HIP 57302 |
11.06 |
| 2026-06-16 12:00 |
11:44:24.00 |
+02:58:59.8 |
HIP 57302 |
10.25 |
| 2026-06-17 00:00 |
11:44:29.93 |
+02:57:54.1 |
HIP 57302 |
9.70 |
| 2026-06-17 12:00 |
11:44:36.00 |
+02:56:47.7 |
HIP 57302 |
9.47 |
| 2026-06-18 00:00 |
11:44:42.20 |
+02:55:40.4 |
HIP 57302 |
9.60 |
| 2026-06-18 12:00 |
11:44:48.55 |
+02:54:32.4 |
HIP 57302 |
10.10 |
| 2026-06-19 00:00 |
11:44:55.02 |
+02:53:23.6 |
HIP 57302 |
10.94 |
| 2026-06-19 12:00 |
11:45:01.64 |
+02:52:14.0 |
HIP 57370 |
10.59 |
| 2026-06-20 00:00 |
11:45:08.39 |
+02:51:03.6 |
HIP 57370 |
8.67 |
| 2026-06-20 12:00 |
11:45:15.27 |
+02:49:52.5 |
HIP 57370 |
6.80 |
| 2026-06-21 00:00 |
11:45:22.28 |
+02:48:40.6 |
HIP 57370 |
5.06 |
| 2026-06-21 12:00 |
11:45:29.43 |
+02:47:27.9 |
HIP 57370 |
3.73 |
| 2026-06-22 00:00 |
11:45:36.70 |
+02:46:14.5 |
HIP 57370 |
3.38 |