236P/LINEAR
| Parameter |
Value |
| Designation |
236P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-09-08T16:59:26.387520Z |
| Orbit solution date (soln_date, UTC) |
2024-08-02T01:42:28Z |
| Obs used |
855 |
| NEO |
- |
| M1 |
15.800 |
| K1 |
8.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-02-08.0000000 |
| e |
0.50861051 |
| q (au) |
1.831984 |
| a (au) |
3.728170 |
| i (deg) |
16.333956 |
| Ω (om, deg) |
245.660604 |
| ω (w, deg) |
119.340798 |
| M (ma, deg) |
70.826590 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.262 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.262 |
| n |
6.000 |
| gf |
0.934 |
| gb |
-0.999 |
| k |
1.000 |
| δ90 |
8.082 |
| 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) |
| 2026-02-03 00:00 |
07:01:08.55 |
+05:43:28.0 |
HIP 33875 |
15.35 |
| 2026-02-03 12:00 |
07:00:50.74 |
+05:44:30.5 |
HIP 33875 |
19.50 |
| 2026-02-04 00:00 |
07:00:33.21 |
+05:45:33.9 |
HIP 33875 |
23.75 |
| 2026-02-04 12:00 |
07:00:15.97 |
+05:46:38.2 |
HIP 33608 |
24.02 |
| 2026-02-05 00:00 |
06:59:59.02 |
+05:47:43.4 |
HIP 33608 |
21.59 |
| 2026-02-05 12:00 |
06:59:42.37 |
+05:48:49.4 |
HIP 33608 |
19.88 |
| 2026-02-06 00:00 |
06:59:26.01 |
+05:49:56.3 |
HIP 33608 |
19.04 |
| 2026-02-06 12:00 |
06:59:09.96 |
+05:51:03.9 |
HIP 33608 |
19.14 |
| 2026-02-07 00:00 |
06:58:54.20 |
+05:52:12.3 |
HIP 33550 |
19.59 |
| 2026-02-07 12:00 |
06:58:38.75 |
+05:53:21.5 |
HIP 33550 |
17.21 |
| 2026-02-08 00:00 |
06:58:23.60 |
+05:54:31.5 |
HIP 33550 |
15.51 |
| 2026-02-08 12:00 |
06:58:08.75 |
+05:55:42.1 |
HIP 33550 |
14.67 |
| 2026-02-09 00:00 |
06:57:54.22 |
+05:56:53.5 |
HIP 33550 |
14.78 |
| 2026-02-09 12:00 |
06:57:39.99 |
+05:58:05.5 |
HIP 33550 |
15.78 |
| 2026-02-10 00:00 |
06:57:26.07 |
+05:59:18.2 |
HIP 33550 |
17.46 |
| 2026-02-10 12:00 |
06:57:12.47 |
+06:00:31.5 |
HIP 33550 |
19.61 |
| 2026-02-11 00:00 |
06:56:59.17 |
+06:01:45.4 |
HIP 33312 |
21.52 |
| 2026-02-11 12:00 |
06:56:46.20 |
+06:03:00.0 |
HIP 33312 |
18.10 |
| 2026-02-12 00:00 |
06:56:33.53 |
+06:04:15.0 |
HIP 33312 |
14.77 |
| 2026-02-12 12:00 |
06:56:21.19 |
+06:05:30.7 |
HIP 33312 |
11.52 |
| 2026-02-13 00:00 |
06:56:09.16 |
+06:06:46.8 |
HIP 33312 |
8.38 |
| 2026-02-13 12:00 |
06:55:57.46 |
+06:08:03.5 |
HIP 33312 |
5.42 |
| 2026-02-14 00:00 |
06:55:46.07 |
+06:09:20.7 |
HIP 33312 |
2.96 |
| 2026-02-14 12:00 |
06:55:35.00 |
+06:10:38.3 |
HIP 33312 |
2.67 |
| 2026-02-15 00:00 |
06:55:24.26 |
+06:11:56.3 |
HIP 33312 |
4.81 |
| 2026-02-15 12:00 |
06:55:13.83 |
+06:13:14.8 |
HIP 33312 |
7.46 |
| 2026-02-16 00:00 |
06:55:03.73 |
+06:14:33.7 |
HIP 33312 |
10.17 |
| 2026-02-16 12:00 |
06:54:53.96 |
+06:15:53.0 |
HIP 33312 |
12.86 |
| 2026-02-17 00:00 |
06:54:44.51 |
+06:17:12.6 |
HIP 33312 |
15.50 |
| 2026-02-17 12:00 |
06:54:35.38 |
+06:18:32.5 |
HIP 33312 |
18.08 |
| 2026-02-18 00:00 |
06:54:26.58 |
+06:19:52.8 |
HIP 33312 |
20.60 |
| 2026-02-18 12:00 |
06:54:18.10 |
+06:21:13.3 |
HIP 33167 |
20.09 |
| 2026-02-19 00:00 |
06:54:09.95 |
+06:22:34.2 |
HIP 33147 |
18.72 |
| 2026-02-19 12:00 |
06:54:02.12 |
+06:23:55.3 |
HIP 33147 |
17.37 |
| 2026-02-20 00:00 |
06:53:54.62 |
+06:25:16.6 |
HIP 33147 |
16.24 |
| 2026-02-20 12:00 |
06:53:47.44 |
+06:26:38.1 |
HIP 33147 |
15.34 |
| 2026-02-21 00:00 |
06:53:40.59 |
+06:27:59.8 |
HIP 33147 |
14.70 |
| 2026-02-21 12:00 |
06:53:34.07 |
+06:29:21.7 |
HIP 33147 |
14.31 |
| 2026-02-22 00:00 |
06:53:27.86 |
+06:30:43.8 |
HIP 33147 |
14.18 |
| 2026-02-22 12:00 |
06:53:21.99 |
+06:32:05.9 |
HIP 33147 |
14.28 |
| 2026-02-23 00:00 |
06:53:16.43 |
+06:33:28.2 |
HIP 33147 |
14.58 |
| 2026-02-23 12:00 |
06:53:11.20 |
+06:34:50.6 |
HIP 33147 |
15.06 |
| 2026-02-24 00:00 |
06:53:06.29 |
+06:36:13.1 |
HIP 33147 |
15.67 |