P/2015 X6 (PANSTARRS)

Metadata

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

P/2015 X6 (PANSTARRS) · Magnitude (Full range)

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

P/2015 X6 (PANSTARRS) · Next 30 Days

Ephemeris

Date/Time (UTC) RA (J2000) Dec (J2000) Nearest HIP Dist from HIP (arcmin)
2026-05-12 00:00 10:32:30.56 +14:34:00.1 HIP 51627 5.53
2026-05-12 12:00 10:32:46.78 +14:31:46.2 HIP 51627 5.50
2026-05-13 00:00 10:33:03.28 +14:29:30.8 HIP 51627 8.47
2026-05-13 12:00 10:33:20.04 +14:27:13.9 HIP 51627 12.51
2026-05-14 00:00 10:33:37.07 +14:24:55.5 HIP 51627 16.94
2026-05-14 12:00 10:33:54.36 +14:22:35.5 HIP 51627 21.56
2026-05-15 00:00 10:34:11.91 +14:20:14.0 HIP 51627 26.30
2026-05-15 12:00 10:34:29.73 +14:17:51.0 HIP 51627 31.15
2026-05-16 00:00 10:34:47.80 +14:15:26.6 HIP 51949 31.31
2026-05-16 12:00 10:35:06.12 +14:13:00.6 HIP 51949 26.27
2026-05-17 00:00 10:35:24.70 +14:10:33.2 HIP 51949 21.17
2026-05-17 12:00 10:35:43.53 +14:08:04.4 HIP 51949 16.02
2026-05-18 00:00 10:36:02.61 +14:05:34.1 HIP 51949 10.86
2026-05-18 12:00 10:36:21.94 +14:03:02.4 HIP 51949 5.80
2026-05-19 00:00 10:36:41.51 +14:00:29.3 HIP 51949 2.48
2026-05-19 12:00 10:37:01.32 +13:57:54.7 HIP 51949 6.11
2026-05-20 00:00 10:37:21.37 +13:55:18.8 HIP 51949 11.37
2026-05-20 12:00 10:37:41.66 +13:52:41.5 HIP 52070 11.63
2026-05-21 00:00 10:38:02.19 +13:50:02.9 HIP 52070 9.09
2026-05-21 12:00 10:38:22.94 +13:47:22.9 HIP 52070 9.70
2026-05-22 00:00 10:38:43.93 +13:44:41.6 HIP 52070 13.10
2026-05-22 12:00 10:39:05.15 +13:41:58.9 HIP 52070 17.81
2026-05-23 00:00 10:39:26.59 +13:39:14.9 HIP 52249 17.01
2026-05-23 12:00 10:39:48.25 +13:36:29.7 HIP 52249 11.20
2026-05-24 00:00 10:40:10.14 +13:33:43.1 HIP 52249 5.61
2026-05-24 12:00 10:40:32.24 +13:30:55.3 HIP 52249 3.10
2026-05-25 00:00 10:40:54.56 +13:28:06.3 HIP 52249 7.87
2026-05-25 12:00 10:41:17.10 +13:25:15.9 HIP 52249 13.80
2026-05-26 00:00 10:41:39.85 +13:22:24.4 HIP 52249 19.93
2026-05-26 12:00 10:42:02.80 +13:19:31.6 HIP 52249 26.16
2026-05-27 00:00 10:42:25.96 +13:16:37.6 HIP 52333 25.90
2026-05-27 12:00 10:42:49.33 +13:13:42.4 HIP 52519 25.79
2026-05-28 00:00 10:43:12.91 +13:10:46.0 HIP 52519 19.38
2026-05-28 12:00 10:43:36.68 +13:07:48.5 HIP 52519 12.96
2026-05-29 00:00 10:44:00.65 +13:04:49.7 HIP 52519 6.63
2026-05-29 12:00 10:44:24.82 +13:01:49.8 HIP 52519 2.43
2026-05-30 00:00 10:44:49.19 +12:58:48.8 HIP 52519 7.48
2026-05-30 12:00 10:45:13.75 +12:55:46.6 HIP 52519 14.00
2026-05-31 00:00 10:45:38.49 +12:52:43.3 HIP 52683 12.67
2026-05-31 12:00 10:46:03.43 +12:49:38.8 HIP 52683 6.15
2026-06-01 00:00 10:46:28.56 +12:46:33.2 HIP 52683 2.81
2026-06-01 12:00 10:46:53.87 +12:43:26.6 HIP 52683 8.55
2026-06-02 00:00 10:47:19.37 +12:40:18.8 HIP 52683 15.34