Asteroid Iris Ephemeris Calculator
Based the U.S. Naval Observatory AE98 Model
PHP Program By Jay Tanner
Date: (1800 to 2099) Y m d
Local Time (00h to 24h) H:M:S
Local Time Zone Offset ±H:M
Undefined1
Std. Time = UT
Apply ΔT
+00:00:00
Daylight / Summer Time
Undefined3
Longitude ±Deg.d M S
(Neg=W)
Latitude ±Deg.d M S
(Neg=S)
Sea Level Elevation
(± meters)
This program uses a cookie to store and remember the interface settings between calls.
Asteroid Iris Ephemeris Statistics Referred to True Ecliptic and Equinox of the Date Based On the U.S.N.O. Asteroid Ephemeris, 1998 Local Date = 2026 Mar 19 - Thu Local Time = 22:42:09 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461119.44593750 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 10h 12m 04.91s = 10.2013633h = 153.0204495° Declination = +01° 50' 09.81" = +1.836058° True Distance = 1.609019775 AU = 240.705932 Mkm = 149.567732 Mmi Visual Magnitude = +9.2 Horizontal Parallax = 5.466" = 0.091092' = 0.001518203° Light/Signal Time = 13m 22.909s ================================================================================ Local Topocentric Coordinates of Asteroid Iris For Geographic Location: Longitude = -76.833611111° = -05h 07m 20.1s (W=Negative) Latitude = +42.752194444° Elevation = 0 m Topocentric RA = 10h 12m 05.16s = 10.2014341h = 153.0215109° Topocentric Decl = +01° 50' 06.16" = +1.835044° Local Hour Angle = -04h 47m 18.71s = -71.827946974638° (W=Negative) Local Sidereal Time = 05h 24m 46.455s = 5.412904261h = 81.193563917° Azimuth = 101.20301° (Measured clockwise from N=0°) = 281.20301° (Measured clockwise from S=0°) Direction = E Altitude = +14.51457° (Above Local Horizon - No refractions applied) ================================================================================ Asteroid Iris ephemeris table for each day of Mar. 2014 at 12:00 TT. Computed according to USNO AE98 ephemeris model - No Delta T applied. There are three extra (xx) days at each end of the table. JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day 2461098 10.5118333 -00.305436 1.506407768 +8.7 xx 2461099 10.4952888 -00.210404 1.508387983 +8.7 xx 2461100 10.4788310 -00.114082 1.510649911 +8.7 xx 2461101 10.4624791 -00.016598 1.513192993 +8.7 1 2461102 10.4462522 +00.081920 1.516016559 +8.7 2 2461103 10.4301692 +00.181344 1.519119832 +8.8 3 2461104 10.4142488 +00.281544 1.522501930 +8.8 4 2461105 10.3985095 +00.382392 1.526161863 +8.8 5 2461106 10.3829694 +00.483761 1.530098516 +8.8 6 2461107 10.3676462 +00.585523 1.534310634 +8.9 7 2461108 10.3525570 +00.687554 1.538796809 +8.9 8 2461109 10.3377184 +00.789730 1.543555470 +8.9 9 2461110 10.3231465 +00.891928 1.548584874 +8.9 10 2461111 10.3088567 +00.994027 1.553883108 +9.0 11 2461112 10.2948642 +01.095906 1.559448084 +9.0 12 2461113 10.2811833 +01.197448 1.565277544 +9.0 13 2461114 10.2678278 +01.298534 1.571369054 +9.0 14 2461115 10.2548110 +01.399048 1.577720008 +9.1 15 2461116 10.2421458 +01.498877 1.584327615 +9.1 16 2461117 10.2298445 +01.597907 1.591188891 +9.1 17 2461118 10.2179191 +01.696024 1.598300649 +9.2 18 2461119 10.2063809 +01.793118 1.605659483 +9.2 19 2461120 10.1952409 +01.889082 1.613261767 +9.2 20 2461121 10.1845091 +01.983813 1.621103658 +9.2 21 2461122 10.1741944 +02.077215 1.629181124 +9.3 22 2461123 10.1643046 +02.169201 1.637489975 +9.3 23 2461124 10.1548463 +02.259688 1.646025906 +9.3 24 2461125 10.1458246 +02.348604 1.654784548 +9.4 25 2461126 10.1372439 +02.435880 1.663761504 +9.4 26 2461127 10.1291079 +02.521450 1.672952386 +9.4 27 2461128 10.1214194 +02.605255 1.682352842 +9.4 28 2461129 10.1141812 +02.687237 1.691958569 +9.5 29 2461130 10.1073953 +02.767341 1.701765328 +9.5 30 2461131 10.1010637 +02.845516 1.711768943 +9.5 31 2461132 10.0951879 +02.921716 1.721965301 +9.5 xx 2461133 10.0897689 +02.995897 1.732350342 +9.6 xx 2461134 10.0848073 +03.068020 1.742920049 +9.6 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================