| Parameter |
Value |
| Designation |
286P/Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-05-13T11:04:06.790080Z |
| Orbit solution date (soln_date, UTC) |
2024-06-14T15:42:22Z |
| Obs used |
470 |
| NEO |
- |
| M1 |
16.000 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2018-04-23.0000000 |
| e |
0.42417674 |
| q (au) |
2.369655 |
| a (au) |
4.115246 |
| i (deg) |
17.038782 |
| Ω (om, deg) |
283.947999 |
| ω (w, deg) |
24.688564 |
| M (ma, deg) |
185.095652 |
Magnitude
Scatter + Global Linear
$$
M_a = (17.621 + 2.108\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
17.621 |
| n |
2.108 |
| gf |
1.000 |
| gb |
-0.682 |
| 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 |
07:55:07.78 |
+14:46:33.6 |
HIP 38524 |
27.39 |
| 2026-06-01 12:00 |
07:55:25.44 |
+14:45:39.7 |
HIP 38837 |
24.42 |
| 2026-06-02 00:00 |
07:55:43.18 |
+14:44:45.4 |
HIP 38837 |
21.38 |
| 2026-06-02 12:00 |
07:56:00.99 |
+14:43:50.6 |
HIP 38837 |
18.86 |
| 2026-06-03 00:00 |
07:56:18.88 |
+14:42:55.3 |
HIP 38837 |
17.13 |
| 2026-06-03 12:00 |
07:56:36.84 |
+14:41:59.6 |
HIP 38837 |
16.43 |
| 2026-06-04 00:00 |
07:56:54.88 |
+14:41:03.4 |
HIP 38837 |
16.92 |
| 2026-06-04 12:00 |
07:57:12.99 |
+14:40:06.8 |
HIP 38837 |
18.52 |
| 2026-06-05 00:00 |
07:57:31.17 |
+14:39:09.6 |
HIP 38837 |
20.98 |
| 2026-06-05 12:00 |
07:57:49.42 |
+14:38:12.1 |
HIP 38837 |
24.06 |
| 2026-06-06 00:00 |
07:58:07.74 |
+14:37:14.0 |
HIP 38819 |
26.69 |
| 2026-06-06 12:00 |
07:58:26.13 |
+14:36:15.5 |
HIP 38819 |
29.77 |
| 2026-06-07 00:00 |
07:58:44.59 |
+14:35:16.6 |
HIP 39178 |
29.92 |
| 2026-06-07 12:00 |
07:59:03.12 |
+14:34:17.2 |
HIP 39178 |
25.63 |
| 2026-06-08 00:00 |
07:59:21.71 |
+14:33:17.3 |
HIP 39178 |
21.46 |
| 2026-06-08 12:00 |
07:59:40.37 |
+14:32:16.9 |
HIP 39178 |
17.48 |
| 2026-06-09 00:00 |
07:59:59.10 |
+14:31:16.1 |
HIP 39178 |
13.91 |
| 2026-06-09 12:00 |
08:00:17.89 |
+14:30:14.9 |
HIP 39178 |
11.15 |
| 2026-06-10 00:00 |
08:00:36.75 |
+14:29:13.1 |
HIP 39178 |
9.94 |
| 2026-06-10 12:00 |
08:00:55.67 |
+14:28:10.9 |
HIP 39178 |
10.82 |
| 2026-06-11 00:00 |
08:01:14.66 |
+14:27:08.3 |
HIP 39178 |
13.41 |
| 2026-06-11 12:00 |
08:01:33.70 |
+14:26:05.2 |
HIP 39178 |
16.96 |
| 2026-06-12 00:00 |
08:01:52.81 |
+14:25:01.6 |
HIP 39178 |
20.99 |
| 2026-06-12 12:00 |
08:02:11.98 |
+14:23:57.5 |
HIP 39247 |
23.29 |
| 2026-06-13 00:00 |
08:02:31.21 |
+14:22:53.0 |
HIP 39427 |
23.14 |
| 2026-06-13 12:00 |
08:02:50.50 |
+14:21:48.1 |
HIP 39427 |
19.46 |
| 2026-06-14 00:00 |
08:03:09.84 |
+14:20:42.6 |
HIP 39427 |
16.36 |
| 2026-06-14 12:00 |
08:03:29.25 |
+14:19:36.7 |
HIP 39427 |
14.24 |
| 2026-06-15 00:00 |
08:03:48.71 |
+14:18:30.4 |
HIP 39427 |
13.57 |
| 2026-06-15 12:00 |
08:04:08.22 |
+14:17:23.6 |
HIP 39427 |
14.58 |
| 2026-06-16 00:00 |
08:04:27.79 |
+14:16:16.3 |
HIP 39427 |
16.99 |
| 2026-06-16 12:00 |
08:04:47.42 |
+14:15:08.6 |
HIP 39427 |
20.31 |
| 2026-06-17 00:00 |
08:05:07.10 |
+14:14:00.4 |
HIP 39427 |
24.18 |
| 2026-06-17 12:00 |
08:05:26.83 |
+14:12:51.7 |
HIP 39427 |
28.38 |
| 2026-06-18 00:00 |
08:05:46.61 |
+14:11:42.6 |
HIP 39507 |
31.34 |
| 2026-06-18 12:00 |
08:06:06.44 |
+14:10:33.1 |
HIP 39809 |
30.29 |
| 2026-06-19 00:00 |
08:06:26.33 |
+14:09:23.1 |
HIP 39809 |
26.32 |
| 2026-06-19 12:00 |
08:06:46.26 |
+14:08:12.6 |
HIP 39809 |
22.74 |
| 2026-06-20 00:00 |
08:07:06.24 |
+14:07:01.7 |
HIP 39809 |
19.76 |
| 2026-06-20 12:00 |
08:07:26.27 |
+14:05:50.3 |
HIP 39809 |
17.70 |
| 2026-06-21 00:00 |
08:07:46.34 |
+14:04:38.5 |
HIP 39809 |
16.93 |
| 2026-06-21 12:00 |
08:08:06.46 |
+14:03:26.3 |
HIP 39809 |
17.61 |
| 2026-06-22 00:00 |
08:08:26.63 |
+14:02:13.6 |
HIP 39809 |
19.61 |