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 Sep 01 - Mon Local Time = 13:29:46 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460920.06233796 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 08h 21m 41.91s = 8.3616403h = 125.4246045° Declination = +17° 34' 13.75" = +17.570485° True Distance = 2.766567268 AU = 413.872572 Mkm = 257.168494 Mmi Visual Magnitude = +10.2 Horizontal Parallax = 3.179" = 0.052979' = 0.000882979° Light/Signal Time = 23m 00.530s ================================================================================ 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 = 08h 21m 41.96s = 8.3616550h = 125.4248246° Topocentric Decl = +17° 34' 12.37" = +17.570102° Local Hour Angle = -01h 15m 23.91s = -18.849618991256° (W=Negative) Local Sidereal Time = 07h 06m 18.049s = 7.105013705h = 106.575205578° Azimuth = 141.75546° (Measured clockwise from N=0°) = 321.75546° (Measured clockwise from S=0°) Direction = SE Altitude = +60.15983° (Above Local Horizon - No refractions applied) ================================================================================ Asteroid Iris ephemeris table for each day of Sep. 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 2460917 8.2537707 +18.014179 2.779356364 +10.2 xx 2460918 8.2891611 +17.870628 2.775256144 +10.2 xx 2460919 8.3243909 +17.725771 2.771082186 +10.2 xx 2460920 8.3594595 +17.579636 2.766834501 +10.2 1 2460921 8.3943663 +17.432254 2.762513086 +10.2 2 2460922 8.4291104 +17.283651 2.758117923 +10.2 3 2460923 8.4636911 +17.133855 2.753648962 +10.2 4 2460924 8.4981079 +16.982892 2.749106115 +10.2 5 2460925 8.5323602 +16.830785 2.744489233 +10.2 6 2460926 8.5664479 +16.677558 2.739798092 +10.2 7 2460927 8.6003710 +16.523231 2.735032385 +10.2 8 2460928 8.6341297 +16.367826 2.730191716 +10.2 9 2460929 8.6677245 +16.211366 2.725275613 +10.2 10 2460930 8.7011554 +16.053875 2.720283559 +10.2 11 2460931 8.7344221 +15.895384 2.715215020 +10.2 12 2460932 8.7675236 +15.735921 2.710069482 +10.2 13 2460933 8.8004588 +15.575521 2.704846485 +10.2 14 2460934 8.8332259 +15.414212 2.699545642 +10.2 15 2460935 8.8658233 +15.252028 2.694166652 +10.2 16 2460936 8.8982494 +15.088998 2.688709311 +10.2 17 2460937 8.9305028 +14.925149 2.683173507 +10.2 18 2460938 8.9625822 +14.760512 2.677559218 +10.2 19 2460939 8.9944866 +14.595112 2.671866504 +10.2 20 2460940 9.0262153 +14.428978 2.666095497 +10.2 21 2460941 9.0577675 +14.262138 2.660246391 +10.2 22 2460942 9.0891427 +14.094621 2.654319427 +10.2 23 2460943 9.1203401 +13.926456 2.648314885 +10.3 24 2460944 9.1513591 +13.757672 2.642233070 +10.3 25 2460945 9.1821990 +13.588300 2.636074306 +10.3 26 2460946 9.2128588 +13.418370 2.629838931 +10.3 27 2460947 9.2433377 +13.247910 2.623527287 +10.3 28 2460948 9.2736348 +13.076952 2.617139725 +10.3 29 2460949 9.3037491 +12.905522 2.610676593 +10.3 30 2460950 9.3336796 +12.733649 2.604138235 +10.3 xx 2460951 9.3634255 +12.561361 2.597524980 +10.3 xx 2460952 9.3929859 +12.388682 2.590837130 +10.3 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================