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RADIAL COMPONENTS OF OBSERVER’S VELOCITY
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Units: km/s
Sign Convention:
+ve means the observer is moving away from the position: to correct
an observed radial velocity to one of the given rest standards,
SUBTRACT the appropriate tabulated value.
Local Standards of Rest:
Two forms of LSR are provided for. LSR(K) is a "kinematical" LSR and
(loosely) refers to the average motion of nearby stars. LSR(D) is the
"dynamical" LSR, the point in the solar neighbourhood which is in
circular orbit around the galactic centre.
The solar velocity defining the adopted kinematical LSR is 20 km/s
towards the 18 00 00.0 +30 00 00 B1900 (= 18 03 50.3 +30 00 17 J2000).
The solar velocity with respect to the dynamical LSR is (+9,+12,+7) km/s
in galactic cartesian cordinates, the equivalent of 16.6 km/s towards
17 49 58.7 +28 07 04 J2000.
Galactic Rotation:
The velocity of the dynamical LSR with respect to the galactic centre is
220 km/s towards L2=90, B2=0.
Supergalactic:
The solar velocity with respect to the mean motion of the local group is
300 km/s towards L2=90, B2=0.
Heliocentric light-time:
The light time component to the sun(listed following the heliocentric
velocity component) is in seconds and is +ve when the position is more
than 90deg from the Sun: to correct an observed time SUBTRACT the
tabulated light time.
Observatory: Anglo-Australian 3.9m Telescope
E 149 03 57.9 S 31 16 37
Starting UTC date: 1977/01/25 = JD 2443168.5
Equatorial coordinates: 08 33 39.30 -45 00 12.0 B1950.0
08 35 20.68 -45 10 37.6 J2000.0
08 34 36.82 -45 06 00.8 geocentric apparent
Galactic coordinates: L2 = 263.5526 B2 = -2.7876
Ecliptic coordinates: L = 153.0557 B = -60.3641 (mean equinox of date)
UTC ZD EARTH SUN LSR (K) LSR (D) GALAXY LOCAL GROUP
1977 01 25 06:00 88.8 -0.23 -7.31 (-214.7) +9.42 +5.95 +224.30 +290.44
1977 01 25 06:30 85.0 -0.25 -7.32 (-214.8) +9.41 +5.94 +224.29 +290.43
1977 01 25 07:00 80.8 -0.26 -7.33 (-214.8) +9.40 +5.93 +224.28 +290.42
1977 01 25 07:30 76.3 -0.27 -7.34 (-214.8) +9.39 +5.92 +224.27 +290.41
1977 01 25 08:00 71.7 -0.28 -7.34 (-214.9) +9.39 +5.92 +224.27 +290.41
1977 01 25 08:30 66.8 -0.28 -7.33 (-214.9) +9.40 +5.93 +224.28 +290.42
1977 01 25 09:00 61.8 -0.28 -7.32 (-215.0) +9.41 +5.94 +224.29 +290.43
1977 01 25 09:30 56.7 -0.27 -7.31 (-215.0) +9.42 +5.95 +224.30 +290.44
1977 01 25 10:00 51.5 -0.25 -7.29 (-215.1) +9.44 +5.97 +224.32 +290.46
1977 01 25 10:30 46.2 -0.24 -7.27 (-215.1) +9.46 +5.99 +224.34 +290.48
1977 01 25 11:00 40.9 -0.21 -7.24 (-215.1) +9.49 +6.02 +224.37 +290.51
1977 01 25 11:30 35.6 -0.19 -7.21 (-215.2) +9.52 +6.05 +224.40 +290.54
1977 01 25 12:00 30.4 -0.16 -7.18 (-215.2) +9.55 +6.08 +224.43 +290.57
1977 01 25 12:30 25.4 -0.13 -7.14 (-215.3) +9.59 +6.12 +224.47 +290.61
1977 01 25 13:00 20.8 -0.10 -7.10 (-215.3) +9.63 +6.16 +224.51 +290.65
1977 01 25 13:30 16.8 -0.06 -7.06 (-215.4) +9.67 +6.20 +224.55 +290.69
1977 01 25 14:00 14.3 -0.02 -7.02 (-215.4) +9.71 +6.24 +224.59 +290.73
1977 01 25 14:30 14.0 +0.01 -6.98 (-215.4) +9.75 +6.28 +224.63 +290.77
1977 01 25 15:00 16.0 +0.05 -6.94 (-215.5) +9.79 +6.32 +224.67 +290.81
1977 01 25 15:30 19.5 +0.09 -6.90 (-215.5) +9.83 +6.36 +224.71 +290.85
1977 01 25 16:00 24.0 +0.12 -6.86 (-215.6) +9.87 +6.40 +224.75 +290.89
1977 01 25 16:30 29.0 +0.15 -6.82 (-215.6) +9.91 +6.44 +224.79 +290.93
1977 01 25 17:00 34.1 +0.18 -6.79 (-215.6) +9.94 +6.47 +224.82 +290.96
1977 01 25 17:30 39.4 +0.21 -6.76 (-215.7) +9.97 +6.50 +224.85 +290.99
1977 01 25 18:00 44.7 +0.23 -6.73 (-215.7) +10.00 +6.53 +224.88 +291.02
1977 01 25 18:30 50.0 +0.25 -6.71 (-215.8) +10.03 +6.55 +224.90 +291.04
1977 01 25 19:00 55.2 +0.26 -6.69 (-215.8) +10.04 +6.57 +224.92 +291.06
1977 01 25 19:30 60.4 +0.27 -6.67 (-215.9) +10.06 +6.59 +224.94 +291.08
1977 01 25 20:00 65.4 +0.28 -6.66 (-215.9) +10.07 +6.60 +224.95 +291.09
1977 01 25 20:30 70.3 +0.28 -6.66 (-215.9) +10.08 +6.60 +224.95 +291.09
1977 01 25 21:00 75.0 +0.28 -6.65 (-216.0) +10.08 +6.60 +224.95 +291.09
1977 01 25 21:30 79.5 +0.27 -6.66 (-216.0) +10.07 +6.60 +224.95 +291.09
1977 01 25 22:00 83.8 +0.25 -6.67 (-216.1) +10.06 +6.59 +224.94 +291.08
1977 01 25 22:30 87.8 +0.24 -6.68 (-216.1) +10.05 +6.58 +224.93 +291.07