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 = 2026 May 12 - Tue Local Time = 11:25:11 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461172.97582176 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 10h 13m 12.34s = 10.2200936h = 153.3014040° Declination = +04° 06' 10.36" = +4.102877° True Distance = 2.256409450 AU = 337.554049 Mkm = 209.746362 Mmi Visual Magnitude = +10.4 Horizontal Parallax = 3.897" = 0.064957' = 0.001082614° Light/Signal Time = 18m 45.959s ================================================================================ 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 13m 12.31s = 10.2200857h = 153.3012848° Topocentric Decl = +04° 06' 07.53" = +4.102091° Local Hour Angle = +11h 25m 38.90s = 171.41208828174° (W=Negative) Local Sidereal Time = 21h 38m 51.210s = 21.647558206h = 324.713373084° Azimuth = 348.34414° (Measured clockwise from N=0°) = 168.34414° (Measured clockwise from S=0°) Direction = NNW Altitude = -42.50420° (Invisible - Below Local Horizon) ================================================================================ Asteroid Iris ephemeris table for each day of May. 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 2461159 10.1042599 +04.134486 2.055437799 +10.2 xx 2461160 10.1103483 +04.146663 2.069392571 +10.2 xx 2461161 10.1167983 +04.156548 2.083424875 +10.2 xx 2461162 10.1236043 +04.164156 2.097531559 +10.2 1 2461163 10.1307604 +04.169505 2.111709546 +10.3 2 2461164 10.1382611 +04.172611 2.125955818 +10.3 3 2461165 10.1461006 +04.173493 2.140267412 +10.3 4 2461166 10.1542733 +04.172167 2.154641404 +10.3 5 2461167 10.1627734 +04.168651 2.169074902 +10.3 6 2461168 10.1715954 +04.162962 2.183565044 +10.4 7 2461169 10.1807339 +04.155116 2.198108983 +10.4 8 2461170 10.1901833 +04.145128 2.212703888 +10.4 9 2461171 10.1999387 +04.133014 2.227346933 +10.4 10 2461172 10.2099950 +04.118786 2.242035285 +10.4 11 2461173 10.2203474 +04.102457 2.256766093 +10.4 12 2461174 10.2309915 +04.084038 2.271536465 +10.5 13 2461175 10.2419230 +04.063541 2.286343461 +10.5 14 2461176 10.2531377 +04.040977 2.301184073 +10.5 15 2461177 10.2646310 +04.016362 2.316055228 +10.5 16 2461178 10.2763982 +03.989714 2.330953810 +10.5 17 2461179 10.2884338 +03.961055 2.345876693 +10.5 18 2461180 10.3007317 +03.930410 2.360820795 +10.6 19 2461181 10.3132859 +03.897805 2.375783124 +10.6 20 2461182 10.3260904 +03.863263 2.390760815 +10.6 21 2461183 10.3391395 +03.826809 2.405751149 +10.6 22 2461184 10.3524280 +03.788464 2.420751551 +10.6 23 2461185 10.3659509 +03.748250 2.435759581 +10.6 24 2461186 10.3797035 +03.706188 2.450772919 +10.7 25 2461187 10.3936811 +03.662300 2.465789347 +10.7 26 2461188 10.4078793 +03.616607 2.480806734 +10.7 27 2461189 10.4222936 +03.569133 2.495823023 +10.7 28 2461190 10.4369195 +03.519899 2.510836223 +10.7 29 2461191 10.4517527 +03.468928 2.525844392 +10.7 30 2461192 10.4667889 +03.416242 2.540845635 +10.7 31 2461193 10.4820237 +03.361864 2.555838087 +10.8 xx 2461194 10.4974530 +03.305815 2.570819910 +10.8 xx 2461195 10.5130725 +03.248115 2.585789283 +10.8 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================