- (/æpˈhiːliən/); when
discussing orbits around other stars the
terms become periastron and apastron. When
discussing a
satellite of Earth,
including the Moon...
-
heliocentric orbits),
argument of
perigee (for
geocentric orbits),
argument of
periastron (for
orbits around stars), and so on, may be used (see
apsis for more...
-
orientation of
periastron changes by
about 4.2
degrees per year in
direction of the
orbital motion (relativistic
precession of
periastron). In
January 1975...
- In
celestial mechanics, the
longitude of the periapsis, also
called longitude of the pericenter, of an
orbiting body is the
longitude (measured from the...
- only
around 250 R☉ at
periastron. The
accretion radius of the
secondary is
around 60 R☉,
suggesting strong accretion near
periastron leading to a collapse...
- 139.3±0.6°
Longitude of the node (Ω) 83.8±0.8°
Periastron epoch (T) JD 2452734.2±9.0
Argument of
periastron (ω) (secondary) 204.2±1.2° Semi-amplitude (K1)...
-
determine four: semi-major axis, eccentricity,
longitude of
periastron, and time of
periastron. Two
parameters remain unknown:
inclination and longitude...
-
apastron it
would receive an
insolation similar to that of Earth,
while at
periastron the
insolation would be
around 800
times greater, far more than that experienced...
- 67711 h
Inclination 83.59 +0.47 −0.44 Time of
periastron 2,449,999.83643 ± 0.0001 Argument of
periastron 86.0 +30.7 −33.4 Semi-amplitude 6.02 +0.24 −0...
- for WR 140.
Separation between these two
stars varies from 1.3 AU at
periastron to 23.9 AU at apastron. WR 140 is
listed as a Wolf–Rayet
variable star...
