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 Mar 14 - Fri Local Time = 07:26:17 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460748.80991898 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 01h 16m 23.51s = 1.2731981h = 19.0979715° Declination = +10° 55' 00.54" = +10.916817° True Distance = 2.660828444 AU = 398.054269 Mkm = 247.339456 Mmi Visual Magnitude = +9.8 Horizontal Parallax = 3.305" = 0.055084' = 0.000918067° Light/Signal Time = 22m 07.766s ================================================================================ 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 = 01h 16m 23.54s = 1.2732043h = 19.0980650° Topocentric Decl = +10° 54' 57.89" = +10.916082° Local Hour Angle = +12h 31m 14.67s = 187.81111234122° (W=Negative) Local Sidereal Time = 13h 47m 38.203s = 13.793945153h = 206.909177294° Azimuth = 9.47715° (Measured clockwise from N=0°) = 189.47715° (Measured clockwise from S=0°) Direction = N Altitude = -35.85737° (Invisible - Below Local Horizon) ================================================================================ 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 2460733 0.6590981 +07.568204 2.586548906 +9.8 xx 2460734 0.6973624 +07.782305 2.591560671 +9.8 xx 2460735 0.7357054 +07.996265 2.596529411 +9.8 xx 2460736 0.7741272 +08.210047 2.601454989 +9.8 1 2460737 0.8126279 +08.423616 2.606337368 +9.8 2 2460738 0.8512077 +08.636937 2.611176623 +9.8 3 2460739 0.8898664 +08.849973 2.615972948 +9.8 4 2460740 0.9286038 +09.062688 2.620726638 +9.8 5 2460741 0.9674190 +09.275041 2.625438066 +9.8 6 2460742 1.0063115 +09.486994 2.630107657 +9.8 7 2460743 1.0452807 +09.698508 2.634735858 +9.8 8 2460744 1.0843261 +09.909545 2.639323121 +9.8 9 2460745 1.1234475 +10.120067 2.643869886 +9.8 10 2460746 1.1626451 +10.330039 2.648376563 +9.8 11 2460747 1.2019192 +10.539428 2.652843530 +9.8 12 2460748 1.2412701 +10.748201 2.657271119 +9.8 13 2460749 1.2806987 +10.956326 2.661659617 +9.8 14 2460750 1.3202055 +11.163773 2.666009257 +9.8 15 2460751 1.3597913 +11.370510 2.670320224 +9.8 16 2460752 1.3994566 +11.576509 2.674592651 +9.8 17 2460753 1.4392020 +11.781737 2.678826623 +9.8 18 2460754 1.4790279 +11.986163 2.683022179 +9.8 19 2460755 1.5189344 +12.189756 2.687179312 +9.7 20 2460756 1.5589218 +12.392483 2.691297973 +9.7 21 2460757 1.5989900 +12.594311 2.695378069 +9.7 22 2460758 1.6391388 +12.795204 2.699419459 +9.7 23 2460759 1.6793681 +12.995128 2.703421958 +9.7 24 2460760 1.7196774 +13.194046 2.707385334 +9.7 25 2460761 1.7600665 +13.391920 2.711309317 +9.7 26 2460762 1.8005350 +13.588713 2.715193615 +9.7 27 2460763 1.8410830 +13.784389 2.719037942 +9.7 28 2460764 1.8817106 +13.978912 2.722842052 +9.7 29 2460765 1.9224177 +14.172247 2.726605779 +9.7 30 2460766 1.9632043 +14.364363 2.730329070 +9.7 31 2460767 2.0040696 +14.555224 2.734011995 +9.7 xx 2460768 2.0450128 +14.744796 2.737654740 +9.7 xx 2460769 2.0860325 +14.933040 2.741257584 +9.7 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================