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 Feb 05 - Wed Local Time = 08:49:05 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460711.86741898 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 23h 52m 08.46s = 23.8690181h = 358.0352715° Declination = +03° 04' 21.52" = +3.072643° True Distance = 2.470767633 AU = 369.621577 Mkm = 229.672200 Mmi Visual Magnitude = +9.9 Horizontal Parallax = 3.559" = 0.059321' = 0.000988688° Light/Signal Time = 20m 32.925s ================================================================================ 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 = 23h 52m 08.51s = 23.8690292h = 358.0354373° Topocentric Decl = +03° 04' 18.98" = +3.071938° Local Hour Angle = -11h 07m 21.24s = -166.83851709121° (W=Negative) Local Sidereal Time = 12h 44m 47.261s = 12.746461347h = 191.196920208° Azimuth = 18.00895° (Measured clockwise from N=0°) = 198.00895° (Measured clockwise from S=0°) Direction = NNE Altitude = -42.65657° (Invisible - Below Local Horizon) ================================================================================ Asteroid Iris ephemeris table for each day of Feb. 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 2460705 23.6198912 +01.653349 2.428946067 +9.9 xx 2460706 23.6559251 +01.857872 2.435170456 +9.9 xx 2460707 23.6920428 +02.063181 2.441349059 +9.9 xx 2460708 23.7282433 +02.269241 2.447481732 +9.9 1 2460709 23.7645263 +02.476021 2.453568429 +9.9 2 2460710 23.8008914 +02.683489 2.459609215 +9.9 3 2460711 23.8373380 +02.891611 2.465604260 +9.9 4 2460712 23.8738656 +03.100353 2.471553830 +9.9 5 2460713 23.9104735 +03.309680 2.477458266 +9.9 6 2460714 23.9471610 +03.519556 2.483317961 +9.9 7 2460715 23.9839270 +03.729944 2.489133342 +9.8 8 2460716 0.0207709 +03.940809 2.494904843 +9.8 9 2460717 0.0576920 +04.152115 2.500632890 +9.8 10 2460718 0.0946900 +04.363829 2.506317879 +9.8 11 2460719 0.1317649 +04.575920 2.511960166 +9.8 12 2460720 0.1689169 +04.788359 2.517560056 +9.8 13 2460721 0.2061465 +05.001115 2.523117800 +9.8 14 2460722 0.2434541 +05.214161 2.528633591 +9.8 15 2460723 0.2808404 +05.427468 2.534107573 +9.8 16 2460724 0.3183058 +05.641007 2.539539838 +9.8 17 2460725 0.3558509 +05.854750 2.544930439 +9.8 18 2460726 0.3934759 +06.068665 2.550279386 +9.8 19 2460727 0.4311813 +06.282723 2.555586654 +9.8 20 2460728 0.4689671 +06.496892 2.560852181 +9.8 21 2460729 0.5068333 +06.711139 2.566075867 +9.8 22 2460730 0.5447798 +06.925429 2.571257574 +9.8 23 2460731 0.5828064 +07.139728 2.576397126 +9.8 24 2460732 0.6209126 +07.353999 2.581494314 +9.8 25 2460733 0.6590981 +07.568204 2.586548906 +9.8 26 2460734 0.6973624 +07.782305 2.591560671 +9.8 27 2460735 0.7357054 +07.996265 2.596529411 +9.8 28 2460736 0.7741272 +08.210047 2.601454989 +9.8 xx 2460737 0.8126279 +08.423616 2.606337368 +9.8 xx 2460738 0.8512077 +08.636937 2.611176623 +9.8 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================