position expressed in terms of the standard reference frame of J2000, and it is often then this J2000 position which is shared with others. On the other hand...

equinox and of the epoch. The currently used standard equinox and epoch is J2000.0, which is January 1, 2000 at 12:00 TT. The prefix "J" indicates that it...

The Pontiac Sunbird (also known as the Pontiac J2000 and Pontiac 2000) is a model line that was manufactured and marketed by Pontiac from the 1976 to...

27° 24′ in the then-used B1950 epoch;[citation needed] in the currently-used J2000 epoch, after precession is taken into account, its position is RA 12h 51m...

acceleration in these cars was quite sluggish, with a test 1982 Pontiac J2000 accelerating from 0–60 mph (0–97 km/h) in 16.3 seconds, with a 1⁄4 mile...

once around the ecliptic. It equals 365.256363004 ephemeris days for the J2000.0 epoch. The sidereal year differs from the solar year, "the period of time...

average duration is 365.256363004 days (365 d 6 h 9 min 9.76 s) (at the epoch J2000.0 = January 1, 2000, 12:00:00 TT). Today the mean tropical year is defined...

right Designations Adjectives Martian Symbol Orbital characteristics Epoch J2000 Aphelion 249261000 km (154884000 mi; 1.66621 AU) Perihelion 206650000 km...

International Earth Rotation and Reference Systems Service. Examples include: J2000: One commonly used ECI frame is defined with the Earth's Mean Equator and...

each before or after J2000.0. For example, the future epoch J2100.0 will be exactly 36,525 days (one Julian century) from J2000.0 at 12:00 TT on January...