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
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 = 2025 Jul 14 - Mon Local Time = 21:18:25 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460871.38778935 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 06h 29m 08.31s = 6.4856405h = 97.2846075° Declination = +22° 43' 09.85" = +22.719404° True Distance = 2.892011207 AU = 432.638719 Mkm = 268.829236 Mmi Visual Magnitude = +9.8 Horizontal Parallax = 3.041" = 0.050681' = 0.000844678° Light/Signal Time = 24m 03.127s ================================================================================ 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 = 06h 29m 08.15s = 6.4855965h = 97.2839476° Topocentric Decl = +22° 43' 08.13" = +22.718926° Local Hour Angle = +05h 13m 54.65s = 78.477720370306° (W=Negative) Local Sidereal Time = 11h 43m 02.800s = 11.717444532h = 175.761667984° Azimuth = 279.94776° (Measured clockwise from N=0°) = 99.94776° (Measured clockwise from S=0°) Direction = W Altitude = +23.41983° (Above Local Horizon - No refractions applied) ================================================================================ Asteroid Iris ephemeris table for each day of Jul. 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 2460855 5.7916197 +23.281618 2.900817814 +9.7 xx 2460856 5.8345860 +23.267290 2.900699743 +9.7 xx 2460857 5.8774814 +23.250302 2.900527786 +9.7 xx 2460858 5.9203039 +23.230663 2.900301891 +9.7 1 2460859 5.9630515 +23.208385 2.900021993 +9.7 2 2460860 6.0057224 +23.183481 2.899688010 +9.7 3 2460861 6.0483147 +23.155964 2.899299837 +9.7 4 2460862 6.0908268 +23.125850 2.898857344 +9.8 5 2460863 6.1332565 +23.093154 2.898360376 +9.8 6 2460864 6.1756021 +23.057892 2.897808749 +9.8 7 2460865 6.2178616 +23.020081 2.897202246 +9.8 8 2460866 6.2600329 +22.979736 2.896540609 +9.8 9 2460867 6.3021139 +22.936874 2.895823530 +9.8 10 2460868 6.3441027 +22.891509 2.895050646 +9.8 11 2460869 6.3859972 +22.843655 2.894221526 +9.8 12 2460870 6.4277956 +22.793326 2.893335671 +9.8 13 2460871 6.4694961 +22.740535 2.892392509 +9.8 14 2460872 6.5110975 +22.685295 2.891391406 +9.8 15 2460873 6.5525984 +22.627619 2.890331672 +9.9 16 2460874 6.5939976 +22.567523 2.889212577 +9.9 17 2460875 6.6352938 +22.505027 2.888033373 +9.9 18 2460876 6.6764855 +22.440149 2.886793316 +9.9 19 2460877 6.7175708 +22.372913 2.885491694 +9.9 20 2460878 6.7585472 +22.303341 2.884127849 +9.9 21 2460879 6.7994120 +22.231458 2.882701201 +9.9 22 2460880 6.8401622 +22.157285 2.881211267 +9.9 23 2460881 6.8807950 +22.080844 2.879657662 +9.9 24 2460882 6.9213076 +22.002154 2.878040099 +9.9 25 2460883 6.9616981 +21.921236 2.876358372 +9.9 26 2460884 7.0019644 +21.838108 2.874612336 +9.9 27 2460885 7.0421052 +21.752793 2.872801886 +10.0 28 2460886 7.0821191 +21.665312 2.870926934 +10.0 29 2460887 7.1220051 +21.575689 2.868987399 +10.0 30 2460888 7.1617619 +21.483949 2.866983191 +10.0 31 2460889 7.2013885 +21.390117 2.864914212 +10.0 xx 2460890 7.2408838 +21.294218 2.862780348 +10.0 xx 2460891 7.2802464 +21.196278 2.860581470 +10.0 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================