22 мая - противостояние Марса!
Подробное описание явления в майском номере журнала "Небосвод"
http://www.astronet.ru/db/msg/1361646Данные по планете Марс на 22 мая 2016 года (на момент противостояния - 11 часов 15 минут всемирного времени)
GEOPHYSICAL DATA:
Mean radius = 3389.9(2+-4) km (Radius: 3397.0 x 3397.0 x 3375.0 km)
Equatorial radius, Re = 3394.0 km
Semimajor axis = 3397(+-4) km
Flattening, f = 1/154.409
Core radius = ~1700 km
Mass = 6.4185E+23 kg
Density = 3.933(5+-4) g/cc
Volume = 16.318E+10 km3
Sidereal rot. period = 24.622962 hr
Rot. Rate = 7.088218E+5 s
Mean solar day = 1.0274907 d
Obliquity to orbit = 25.19 deg
Sidereal orb. per. = 1.8807115 y
Sidereal orb. per. = 686.92971 d
Orbit vel. = 24.1309 km/s
Geometric albedo = 0.150
Escape velocity = 5.027 km/s
Polar gravity = 3.758 m/s2
Equ. gravity = 3.690 m/s2
Atmos. pressure = 0.0056 bar
Mean Temperature = 210 K
Orbital Data:
Perihelion, q: 1.38133346 AU
Semimajor axis, a: 1.52366231 AU
Aphelion, Q: 1.66599116 AU
Eccentricity, e: 0.09341233
Inclination, i: 1.85061 deg
Comparisons:
Radius: 53.1% of Earth, 8th largest body (Venus > Mars > Ganymede)
1.95 times Luna
Mass: 10.7% of Earth, 8th largest body (Venus > Mars > Mercury)
Density: 71% of Earth
Surface gravity: 38% of Earth
Atmosphere: Ave pressure <1% of Earth, 95.3% carbon dioxide, 2.7% nitrogen,
1.6% argon, 0.15% oxygen, 0.03% water
Satellites: Phobos, Deimos
Все противостояния Марса с 1969 по 2018 годы
31 May 1969 dist 72.6 12 Feb 1995 dist 100.9
10 Aug 1971 dist 55.9 17 Mar 1997 dist 98.7
25 Oct 1973 dist 66.0 24 Apr 1999 dist 87.2
15 Dec 1975 dist 85.2 13 Jun 2001 dist 68.1
22 Jan 1978 dist 97.7 28 Aug 2003 dist 55.5
25 Feb 1980 dist 101.2 7 Nov 2005 dist 70.3
31 Mar 1982 dist 95.3 24 Dec 2007 dist 88.6
11 May 1984 dist 80.4 29 Jan 2010 dist 99.2
10 Jul 1986 dist 60.6 3 Mar 2012 dist 100.7
28 Sep 1988 dist 59.1 8 Apr 2014 dist 92.8
27 Nov 1990 dist 78.2 22 May 2016 dist 76.2
7 Jan 1993 dist 93.8 27 Jul 2018 dist 57.5