| Parameter |
Value |
| Designation |
306P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-01-30T00:58:11.510400Z |
| Orbit solution date (soln_date, UTC) |
2025-12-02T15:12:53Z |
| Obs used |
406 |
| NEO |
Yes |
| M1 |
19.600 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2008-10-05.0000000 |
| e |
0.59853445 |
| q (au) |
1.246686 |
| a (au) |
3.105339 |
| i (deg) |
8.365199 |
| Ω (om, deg) |
341.493020 |
| ω (w, deg) |
0.694801 |
| M (ma, deg) |
338.919716 |
Magnitude
Scatter + Global Linear
$$
M_a = (20.000 + 2.741\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
20.000 |
| n |
2.741 |
| gf |
1.000 |
| gb |
-0.581 |
| k |
0.800 |
| 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) |
| 2026-06-01 00:00 |
06:37:31.34 |
+28:25:57.5 |
HIP 31767 |
20.61 |
| 2026-06-01 12:00 |
06:38:18.39 |
+28:24:46.3 |
HIP 31767 |
16.21 |
| 2026-06-02 00:00 |
06:39:05.40 |
+28:23:34.5 |
HIP 31856 |
6.66 |
| 2026-06-02 12:00 |
06:39:52.37 |
+28:22:22.1 |
HIP 31856 |
3.82 |
| 2026-06-03 00:00 |
06:40:39.30 |
+28:21:09.1 |
HIP 32019 |
13.09 |
| 2026-06-03 12:00 |
06:41:26.19 |
+28:19:55.5 |
HIP 32019 |
8.21 |
| 2026-06-04 00:00 |
06:42:13.05 |
+28:18:41.3 |
HIP 32019 |
13.39 |
| 2026-06-04 12:00 |
06:42:59.86 |
+28:17:26.5 |
HIP 32225 |
10.75 |
| 2026-06-05 00:00 |
06:43:46.63 |
+28:16:11.1 |
HIP 32225 |
8.14 |
| 2026-06-05 12:00 |
06:44:33.35 |
+28:14:55.1 |
HIP 32279 |
7.77 |
| 2026-06-06 00:00 |
06:45:20.04 |
+28:13:38.6 |
HIP 32279 |
15.64 |
| 2026-06-06 12:00 |
06:46:06.69 |
+28:12:21.4 |
HIP 32448 |
23.58 |
| 2026-06-07 00:00 |
06:46:53.29 |
+28:11:03.7 |
HIP 32448 |
23.24 |
| 2026-06-07 12:00 |
06:47:39.86 |
+28:09:45.4 |
HIP 32694 |
26.78 |
| 2026-06-08 00:00 |
06:48:26.38 |
+28:08:26.5 |
HIP 32694 |
18.62 |
| 2026-06-08 12:00 |
06:49:12.85 |
+28:07:07.0 |
HIP 32737 |
13.48 |
| 2026-06-09 00:00 |
06:49:59.29 |
+28:05:47.0 |
HIP 32737 |
13.86 |
| 2026-06-09 12:00 |
06:50:45.68 |
+28:04:26.3 |
HIP 32737 |
20.39 |
| 2026-06-10 00:00 |
06:51:32.03 |
+28:03:05.1 |
HIP 32737 |
29.18 |
| 2026-06-10 12:00 |
06:52:18.33 |
+28:01:43.3 |
HIP 33129 |
30.44 |
| 2026-06-11 00:00 |
06:53:04.59 |
+28:00:21.0 |
HIP 33129 |
25.54 |
| 2026-06-11 12:00 |
06:53:50.80 |
+27:58:58.1 |
HIP 33129 |
24.28 |
| 2026-06-12 00:00 |
06:54:36.97 |
+27:57:34.6 |
HIP 33129 |
27.18 |
| 2026-06-12 12:00 |
06:55:23.09 |
+27:56:10.5 |
HIP 33190 |
31.23 |
| 2026-06-13 00:00 |
06:56:09.17 |
+27:54:45.9 |
HIP 33364 |
30.70 |
| 2026-06-13 12:00 |
06:56:55.20 |
+27:53:20.7 |
HIP 33364 |
32.91 |
| 2026-06-14 00:00 |
06:57:41.18 |
+27:51:54.9 |
HIP 33662 |
35.01 |
| 2026-06-14 12:00 |
06:58:27.12 |
+27:50:28.6 |
HIP 33662 |
29.88 |
| 2026-06-15 00:00 |
06:59:13.00 |
+27:49:01.8 |
HIP 33696 |
24.69 |
| 2026-06-15 12:00 |
06:59:58.84 |
+27:47:34.4 |
HIP 33696 |
20.45 |
| 2026-06-16 00:00 |
07:00:44.63 |
+27:46:06.4 |
HIP 33915 |
20.63 |
| 2026-06-16 12:00 |
07:01:30.37 |
+27:44:37.9 |
HIP 33915 |
10.49 |
| 2026-06-17 00:00 |
07:02:16.05 |
+27:43:08.9 |
HIP 33915 |
1.98 |
| 2026-06-17 12:00 |
07:03:01.69 |
+27:41:39.3 |
HIP 33915 |
10.31 |
| 2026-06-18 00:00 |
07:03:47.27 |
+27:40:09.2 |
HIP 33915 |
20.42 |
| 2026-06-18 12:00 |
07:04:32.80 |
+27:38:38.5 |
HIP 34222 |
18.57 |
| 2026-06-19 00:00 |
07:05:18.28 |
+27:37:07.3 |
HIP 34222 |
10.33 |
| 2026-06-19 12:00 |
07:06:03.71 |
+27:35:35.6 |
HIP 34222 |
8.73 |
| 2026-06-20 00:00 |
07:06:49.08 |
+27:34:03.3 |
HIP 34222 |
15.90 |
| 2026-06-20 12:00 |
07:07:34.39 |
+27:32:30.6 |
HIP 34522 |
22.06 |
| 2026-06-21 00:00 |
07:08:19.66 |
+27:30:57.3 |
HIP 34522 |
13.01 |
| 2026-06-21 12:00 |
07:09:04.86 |
+27:29:23.5 |
HIP 34522 |
7.63 |
| 2026-06-22 00:00 |
07:09:50.01 |
+27:27:49.2 |
HIP 34522 |
12.36 |