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 Apr 20 - Mon Local Time = 04:11:09 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461150.67440972 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 10h 04m 06.12s = 10.0683664h = 151.0254960° Declination = +03° 56' 32.75" = +3.942430° True Distance = 1.942726945 AU = 290.627814 Mkm = 180.587751 Mmi Visual Magnitude = +10.0 Horizontal Parallax = 4.527" = 0.075445' = 0.001257418° Light/Signal Time = 16m 09.430s ================================================================================ 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 04m 05.97s = 10.0683241h = 151.0248615° Topocentric Decl = +03° 56' 29.86" = +3.941629° Local Hour Angle = +02h 52m 47.71s = 43.198776525697° (W=Negative) Local Sidereal Time = 12h 56m 53.673s = 12.948242534h = 194.223638007° Azimuth = 237.01651° (Measured clockwise from N=0°) = 57.01651° (Measured clockwise from S=0°) Direction = WSW Altitude = +35.49884° (Above Local Horizon - No refractions applied) ================================================================================ Asteroid Iris ephemeris table for each day of Apr. 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 2461129 10.1141812 +02.687237 1.691958569 +9.5 xx 2461130 10.1073953 +02.767341 1.701765328 +9.5 xx 2461131 10.1010637 +02.845516 1.711768943 +9.5 xx 2461132 10.0951879 +02.921716 1.721965301 +9.5 1 2461133 10.0897689 +02.995897 1.732350342 +9.6 2 2461134 10.0848073 +03.068020 1.742920049 +9.6 3 2461135 10.0803033 +03.138048 1.753670437 +9.6 4 2461136 10.0762566 +03.205949 1.764597541 +9.6 5 2461137 10.0726665 +03.271692 1.775697406 +9.7 6 2461138 10.0695319 +03.335250 1.786966081 +9.7 7 2461139 10.0668512 +03.396598 1.798399618 +9.7 8 2461140 10.0646227 +03.455712 1.809994061 +9.7 9 2461141 10.0628444 +03.512570 1.821745455 +9.8 10 2461142 10.0615139 +03.567151 1.833649834 +9.8 11 2461143 10.0606287 +03.619436 1.845703219 +9.8 12 2461144 10.0601863 +03.669407 1.857901608 +9.8 13 2461145 10.0601840 +03.717044 1.870240965 +9.9 14 2461146 10.0606191 +03.762330 1.882717200 +9.9 15 2461147 10.0614889 +03.805249 1.895326157 +9.9 16 2461148 10.0627906 +03.845786 1.908063601 +9.9 17 2461149 10.0645208 +03.883930 1.920925226 +10.0 18 2461150 10.0666757 +03.919676 1.933906675 +10.0 19 2461151 10.0692505 +03.953025 1.947003578 +10.0 20 2461152 10.0722397 +03.983981 1.960211599 +10.0 21 2461153 10.0756374 +04.012554 1.973526482 +10.0 22 2461154 10.0794374 +04.038752 1.986944085 +10.1 23 2461155 10.0836335 +04.062585 2.000460406 +10.1 24 2461156 10.0882197 +04.084065 2.014071585 +10.1 25 2461157 10.0931899 +04.103200 2.027773909 +10.1 26 2461158 10.0985385 +04.120003 2.041563798 +10.2 27 2461159 10.1042599 +04.134486 2.055437799 +10.2 28 2461160 10.1103483 +04.146663 2.069392571 +10.2 29 2461161 10.1167983 +04.156548 2.083424875 +10.2 30 2461162 10.1236043 +04.164156 2.097531559 +10.2 xx 2461163 10.1307604 +04.169505 2.111709546 +10.3 xx 2461164 10.1382611 +04.172611 2.125955818 +10.3 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================