Basic Astronomical Statistics For Any Gregorian Date, Time and Location
Local Gregorian Date:
YMD
Local Std. Time:
HMS (00 to 24h)
Time Zone:
HM (00 to ±12h)
ΔT (Delta T):
±
HMS
Local Time = UT
2458020.5
0.000000000000
-0.208333333333
+0.000000000000
Longitude:
±
DMS (Neg=W)
Latitude:
±
DMS (Neg=S)
Elevation:
(meters)
-76.8233055556
+42.6763888889
Optional NASA ΔT estimate = +70 sec = +00:01:10.4
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BASIC ASTRONOMICAL STATISTICS FOR ANY GREGORIAN DATE, TIME AND LOCATION Local Date = 20170924 = 2017 Sep 24 - Sunday Local Time = 00:00:00.0 = 0.000000000000 day Time Zone = -05:00 = -0.208333333333 day Delta T = -00:00:00.0 = +0.000000000000 day JD00 = 2458020.5 = JD (Julian Day) number for 00h TT on date JD12 = 2458021 = (JD00 + 0.5) = Always an integer value = JD at 12h TT on date = Standard calendrical Julian Date for date JD = 2458020.708333333333 = (JD00 + LTFrac - TZFrac + dTFrac) = Astronomical JD (Julian Date) for all given date/time elements Date/Time TT Corresponding to Full Astronomical JD 2017 Sep 24 05:00:00.0 TT Time Factors Corresponding to Full Astronomical JD T = 0.177295231576 Julian centuries reckoned from J2000.0 t = 0.017729523157 Julian millennia reckoned from J2000.0 MJD00 = 58020 = (JD12 - 2400001) = Always an integer value = Modified JD number for 00h TT on date Geographic Location of Observer LngDeg = -76.8233055556 (W) = -5.1215537037 h = -05h 07m 17.6s LatDeg = +42.6763888889 (N) Elevation = 295 (meters relative to sea-level) Local Dates/Std. Times of Equinoxes and Solstices March Equinox : 2017 Mar 20 05:29:34 June Solstice : 2017 Jun 20 23:25:17 September Equinox: 2017 Sep 22 15:03:35 December Solstice: 2017 Dec 21 11:29:05 Geotopic Elements For Geographic Location rho * cos(phi) = +0.7363613602 rho * sin(phi) = +0.6743881911 Nutations (IAU 2000B Series) dPsiDeg = -0.0030998622 = Nutation in ecliptical longitude dEpsDeg = -0.0018634298 = Nutation in ecliptical obliquity dRADeg = -0.0028441577 = Equation of the equinoxes Obliquity of the Ecliptic EpsMeanDeg = 23.4369858168 = 23° 26' 13.149" EpsTrueDeg = 23.4351223871 = 23° 26' 06.441" Greenwich Sidereal Time (at longitude 0.0°) GSTMeanDeg = 78.2254942344 = 78° 13' 31.779" GSTMeanHrs = 5.2150329490 = 05h 12m 54.119s GSTTrueDeg = 78.2226500767 = 78° 13' 21.540" GSTTrueHrs = 5.2148433384 = 05h 12m 53.436s Local Sidereal Time at Longitude -76.8233055556° (W) LSTMeanDeg = 1.4021886787 = 00h 05m 36.525s = 01° 24' 07.879" LSTTrueDeg = 1.3993445210 = 00h 05m 35.843s = 01° 23' 57.640"
Jay Tanner - PHP Science Labs - 2017 - v5.3