| 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
$$
M_a = (11.259 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.259 |
| n |
6.000 |
| gf |
0.952 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
8.227 |
| 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) |
| 2026-09-20 00:00 |
09:38:31.51 |
+00:05:45.0 |
HIP 47252 |
26.59 |
| 2026-09-20 12:00 |
09:38:56.53 |
+00:02:39.5 |
HIP 47252 |
26.78 |
| 2026-09-21 00:00 |
09:39:21.46 |
-00:00:26.1 |
HIP 47252 |
28.70 |
| 2026-09-21 12:00 |
09:39:46.31 |
-00:03:31.9 |
HIP 47252 |
32.02 |
| 2026-09-22 00:00 |
09:40:11.07 |
-00:06:37.9 |
HIP 47604 |
34.59 |
| 2026-09-22 12:00 |
09:40:35.75 |
-00:09:44.1 |
HIP 47604 |
27.81 |
| 2026-09-23 00:00 |
09:41:00.34 |
-00:12:50.5 |
HIP 47604 |
21.12 |
| 2026-09-23 12:00 |
09:41:24.84 |
-00:15:57.0 |
HIP 47604 |
14.65 |
| 2026-09-24 00:00 |
09:41:49.25 |
-00:19:03.7 |
HIP 47604 |
8.83 |
| 2026-09-24 12:00 |
09:42:13.58 |
-00:22:10.6 |
HIP 47604 |
5.94 |
| 2026-09-25 00:00 |
09:42:37.81 |
-00:25:17.7 |
HIP 47604 |
9.26 |
| 2026-09-25 12:00 |
09:43:01.96 |
-00:28:24.9 |
HIP 47604 |
15.12 |
| 2026-09-26 00:00 |
09:43:26.02 |
-00:31:32.2 |
HIP 47604 |
21.53 |
| 2026-09-26 12:00 |
09:43:49.98 |
-00:34:39.8 |
HIP 47849 |
21.45 |
| 2026-09-27 00:00 |
09:44:13.86 |
-00:37:47.4 |
HIP 47849 |
17.47 |
| 2026-09-27 12:00 |
09:44:37.64 |
-00:40:55.2 |
HIP 47849 |
15.53 |
| 2026-09-28 00:00 |
09:45:01.33 |
-00:44:03.2 |
HIP 47849 |
16.36 |
| 2026-09-28 12:00 |
09:45:24.93 |
-00:47:11.3 |
HIP 47849 |
19.59 |
| 2026-09-29 00:00 |
09:45:48.43 |
-00:50:19.5 |
HIP 48000 |
23.23 |
| 2026-09-29 12:00 |
09:46:11.84 |
-00:53:27.8 |
HIP 48026 |
19.26 |
| 2026-09-30 00:00 |
09:46:35.15 |
-00:56:36.3 |
HIP 48026 |
12.70 |
| 2026-09-30 12:00 |
09:46:58.37 |
-00:59:44.8 |
HIP 48026 |
6.27 |
| 2026-10-01 00:00 |
09:47:21.49 |
-01:02:53.5 |
HIP 48026 |
2.15 |
| 2026-10-01 12:00 |
09:47:44.51 |
-01:06:02.3 |
HIP 48026 |
7.50 |
| 2026-10-02 00:00 |
09:48:07.44 |
-01:09:11.2 |
HIP 48026 |
13.90 |
| 2026-10-02 12:00 |
09:48:30.26 |
-01:12:20.2 |
HIP 48026 |
20.37 |
| 2026-10-03 00:00 |
09:48:52.99 |
-01:15:29.3 |
HIP 48267 |
24.77 |
| 2026-10-03 12:00 |
09:49:15.62 |
-01:18:38.5 |
HIP 48267 |
18.34 |
| 2026-10-04 00:00 |
09:49:38.14 |
-01:21:47.7 |
HIP 48267 |
11.98 |
| 2026-10-04 12:00 |
09:50:00.57 |
-01:24:57.1 |
HIP 48267 |
5.86 |
| 2026-10-05 00:00 |
09:50:22.89 |
-01:28:06.4 |
HIP 48267 |
2.79 |
| 2026-10-05 12:00 |
09:50:45.11 |
-01:31:15.9 |
HIP 48267 |
7.95 |
| 2026-10-06 00:00 |
09:51:07.22 |
-01:34:25.4 |
HIP 48267 |
14.13 |
| 2026-10-06 12:00 |
09:51:29.23 |
-01:37:35.0 |
HIP 48347 |
14.12 |
| 2026-10-07 00:00 |
09:51:51.13 |
-01:40:44.6 |
HIP 48347 |
13.34 |
| 2026-10-07 12:00 |
09:52:12.92 |
-01:43:54.3 |
HIP 48347 |
15.35 |
| 2026-10-08 00:00 |
09:52:34.61 |
-01:47:03.9 |
HIP 48347 |
19.28 |
| 2026-10-08 12:00 |
09:52:56.19 |
-01:50:13.6 |
HIP 48347 |
24.19 |
| 2026-10-09 00:00 |
09:53:17.65 |
-01:53:23.4 |
HIP 48347 |
29.58 |
| 2026-10-09 12:00 |
09:53:39.01 |
-01:56:33.1 |
HIP 48347 |
35.22 |
| 2026-10-10 00:00 |
09:54:00.26 |
-01:59:42.8 |
HIP 48588 |
38.22 |
| 2026-10-10 12:00 |
09:54:21.39 |
-02:02:52.6 |
HIP 48588 |
34.30 |
| 2026-10-11 00:00 |
09:54:42.41 |
-02:06:02.3 |
HIP 48588 |
31.11 |