P/2015 X6 (PANSTARRS)
| Parameter |
Value |
| Designation |
P/2015 X6 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-03-18T15:23:43.068480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:20Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
16.100 |
| K1 |
10.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2015-12-22.0000000 |
| e |
0.16962315 |
| q (au) |
2.287338 |
| a (au) |
2.754579 |
| i (deg) |
4.558135 |
| Ω (om, deg) |
107.111954 |
| ω (w, deg) |
329.021808 |
| M (ma, deg) |
341.105692 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.451 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.451 |
| n |
6.000 |
| gf |
0.994 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
11:09:42.10 |
+10:53:20.8 |
HIP 54596 |
19.72 |
| 2026-02-03 12:00 |
11:09:26.10 |
+10:56:17.6 |
HIP 54596 |
19.93 |
| 2026-02-04 00:00 |
11:09:09.77 |
+10:59:16.1 |
HIP 54596 |
21.36 |
| 2026-02-04 12:00 |
11:08:53.09 |
+11:02:16.0 |
HIP 54596 |
23.85 |
| 2026-02-05 00:00 |
11:08:36.06 |
+11:05:17.4 |
HIP 54351 |
23.25 |
| 2026-02-05 12:00 |
11:08:18.71 |
+11:08:20.3 |
HIP 54351 |
21.33 |
| 2026-02-06 00:00 |
11:08:01.02 |
+11:11:24.5 |
HIP 54351 |
20.58 |
| 2026-02-06 12:00 |
11:07:43.01 |
+11:14:30.1 |
HIP 54351 |
21.16 |
| 2026-02-07 00:00 |
11:07:24.67 |
+11:17:37.0 |
HIP 54351 |
23.05 |
| 2026-02-07 12:00 |
11:07:06.02 |
+11:20:45.1 |
HIP 54351 |
25.99 |
| 2026-02-08 00:00 |
11:06:47.06 |
+11:23:54.4 |
HIP 54186 |
26.72 |
| 2026-02-08 12:00 |
11:06:27.79 |
+11:27:04.9 |
HIP 54186 |
23.81 |
| 2026-02-09 00:00 |
11:06:08.21 |
+11:30:16.4 |
HIP 54186 |
21.97 |
| 2026-02-09 12:00 |
11:05:48.34 |
+11:33:29.0 |
HIP 54186 |
21.54 |
| 2026-02-10 00:00 |
11:05:28.18 |
+11:36:42.6 |
HIP 54186 |
22.66 |
| 2026-02-10 12:00 |
11:05:07.74 |
+11:39:57.1 |
HIP 54055 |
23.93 |
| 2026-02-11 00:00 |
11:04:47.02 |
+11:43:12.5 |
HIP 54055 |
21.52 |
| 2026-02-11 12:00 |
11:04:26.02 |
+11:46:28.7 |
HIP 54055 |
20.62 |
| 2026-02-12 00:00 |
11:04:04.75 |
+11:49:45.6 |
HIP 54055 |
21.48 |
| 2026-02-12 12:00 |
11:03:43.23 |
+11:53:03.3 |
HIP 54055 |
23.96 |
| 2026-02-13 00:00 |
11:03:21.45 |
+11:56:21.6 |
HIP 54055 |
27.66 |
| 2026-02-13 12:00 |
11:02:59.42 |
+11:59:40.4 |
HIP 53859 |
28.01 |
| 2026-02-14 00:00 |
11:02:37.16 |
+12:02:59.9 |
HIP 53859 |
22.39 |
| 2026-02-14 12:00 |
11:02:14.66 |
+12:06:19.7 |
HIP 53859 |
17.25 |
| 2026-02-15 00:00 |
11:01:51.93 |
+12:09:40.0 |
HIP 53859 |
13.25 |
| 2026-02-15 12:00 |
11:01:28.98 |
+12:13:00.6 |
HIP 53859 |
11.71 |
| 2026-02-16 00:00 |
11:01:05.82 |
+12:16:21.5 |
HIP 53859 |
13.57 |
| 2026-02-16 12:00 |
11:00:42.46 |
+12:19:42.6 |
HIP 53859 |
17.84 |
| 2026-02-17 00:00 |
11:00:18.90 |
+12:23:03.9 |
HIP 53859 |
23.26 |
| 2026-02-17 12:00 |
10:59:55.14 |
+12:26:25.2 |
HIP 53859 |
29.23 |
| 2026-02-18 00:00 |
10:59:31.21 |
+12:29:46.6 |
HIP 53859 |
35.49 |
| 2026-02-18 12:00 |
10:59:07.11 |
+12:33:08.0 |
HIP 53716 |
39.66 |
| 2026-02-19 00:00 |
10:58:42.84 |
+12:36:29.2 |
HIP 53633 |
40.64 |
| 2026-02-19 12:00 |
10:58:18.41 |
+12:39:50.3 |
HIP 53633 |
36.86 |
| 2026-02-20 00:00 |
10:57:53.83 |
+12:43:11.2 |
HIP 53633 |
34.06 |
| 2026-02-20 12:00 |
10:57:29.11 |
+12:46:31.7 |
HIP 53633 |
32.51 |
| 2026-02-21 00:00 |
10:57:04.26 |
+12:49:51.9 |
HIP 53633 |
32.40 |
| 2026-02-21 12:00 |
10:56:39.29 |
+12:53:11.7 |
HIP 53388 |
27.43 |
| 2026-02-22 00:00 |
10:56:14.20 |
+12:56:31.0 |
HIP 53388 |
20.64 |
| 2026-02-22 12:00 |
10:55:49.00 |
+12:59:49.8 |
HIP 53388 |
14.02 |
| 2026-02-23 00:00 |
10:55:23.71 |
+13:03:07.9 |
HIP 53388 |
8.01 |
| 2026-02-23 12:00 |
10:54:58.33 |
+13:06:25.4 |
HIP 53388 |
5.47 |
| 2026-02-24 00:00 |
10:54:32.86 |
+13:09:42.2 |
HIP 53388 |
9.69 |