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 Jan 23 - Thu Local Time = 00:25:30 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460698.51770833 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 23h 23m 18.29s = 23.3884144h = 350.8262160° Declination = +00° 20' 55.99" = +0.348886° True Distance = 2.387505522 AU = 357.165742 Mkm = 221.932503 Mmi Visual Magnitude = +9.9 Horizontal Parallax = 3.683" = 0.061390' = 0.001023168° Light/Signal Time = 19m 51.377s ================================================================================ 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 23m 18.13s = 23.3883704h = 350.8255559° Topocentric Decl = +00° 20' 53.51" = +0.348197° Local Hour Angle = -19h 54m 43.84s = -298.68267475915° (W=Negative) Local Sidereal Time = 03h 28m 34.291s = 3.476192073h = 52.142881093° Azimuth = 249.88249° (Measured clockwise from N=0°) = 69.88249° (Measured clockwise from S=0°) Direction = WSW Altitude = +20.88850° (Above Local Horizon - No refractions applied) ================================================================================ Asteroid Iris ephemeris table for each day of Jan. 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 2460674 22.5491998 -04.141198 2.214110538 +9.8 xx 2460675 22.5821624 -03.974844 2.221700589 +9.8 xx 2460676 22.6152476 -03.806866 2.229247833 +9.8 xx 2460677 22.6484527 -03.637290 2.236751745 +9.8 1 2460678 22.6817752 -03.466141 2.244211846 +9.8 2 2460679 22.7152125 -03.293446 2.251627720 +9.8 3 2460680 22.7487623 -03.119229 2.258999032 +9.9 4 2460681 22.7824227 -02.943516 2.266325546 +9.9 5 2460682 22.8161918 -02.766331 2.273607127 +9.9 6 2460683 22.8500683 -02.587701 2.280843748 +9.9 7 2460684 22.8840504 -02.407653 2.288035474 +9.9 8 2460685 22.9181367 -02.226214 2.295182460 +9.9 9 2460686 22.9523254 -02.043414 2.302284925 +9.9 10 2460687 22.9866148 -01.859282 2.309343131 +9.9 11 2460688 23.0210031 -01.673849 2.316357356 +9.9 12 2460689 23.0554887 -01.487144 2.323327867 +9.9 13 2460690 23.0900701 -01.299192 2.330254896 +9.9 14 2460691 23.1247463 -01.110021 2.337138626 +9.9 15 2460692 23.1595165 -00.919652 2.343979177 +9.9 16 2460693 23.1943802 -00.728108 2.350776611 +9.9 17 2460694 23.2293370 -00.535411 2.357530932 +9.9 18 2460695 23.2643867 -00.341584 2.364242095 +9.9 19 2460696 23.2995289 -00.146649 2.370910015 +9.9 20 2460697 23.3347634 +00.049371 2.377534572 +9.9 21 2460698 23.3700897 +00.246449 2.384115614 +9.9 22 2460699 23.4055074 +00.444561 2.390652964 +9.9 23 2460700 23.4410159 +00.643680 2.397146414 +9.9 24 2460701 23.4766145 +00.843778 2.403595729 +9.9 25 2460702 23.5123024 +01.044826 2.410000644 +9.9 26 2460703 23.5480786 +01.246792 2.416360873 +9.9 27 2460704 23.5839420 +01.449644 2.422676114 +9.9 28 2460705 23.6198912 +01.653349 2.428946067 +9.9 29 2460706 23.6559251 +01.857872 2.435170456 +9.9 30 2460707 23.6920428 +02.063181 2.441349059 +9.9 31 2460708 23.7282433 +02.269241 2.447481732 +9.9 xx 2460709 23.7645263 +02.476021 2.453568429 +9.9 xx 2460710 23.8008914 +02.683489 2.459609215 +9.9 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================