Asteroid Iris Ephemeris Calculator
Based on the U.S. Naval Observatory Asteroid Ephemeris, 1998
Date: (1800 to 2099) Y m d
Local Time (00h to 24h) H:M:S
Local Time Zone Offset ±H:M
Undefined1
Std. Time = 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 = 2017 Sep 24 - Sun Local Time = 08:37:33 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2458020.85940972 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 02h 24m 59.11s = 2.4164199h = 36.2462985° Declination = +23° 48' 41.11" = +23.811419° True Distance = 0.986640605 AU = 147.599334 Mkm = 91.713974 Mmi Visual Magnitude = +7.9 Horizontal Parallax = 8.913" = 0.148554' = 0.002475896° Light/Signal Time = 08m 12.338s ================================================================================ 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 = 02h 24m 58.95s = 2.4163752h = 36.2456283° Topocentric Decl = +23° 48' 38.09" = +23.810581° Local Hour Angle = +01h 18m 43.16s = 19.679815428898° (W=Negative) Local Sidereal Time = 03h 43m 42.106s = 3.728362912h = 55.925443680° Azimuth = 226.89865° (Measured clockwise from N=0°) = 46.89865° (Measured clockwise from S=0°) Direction = SW Altitude = +65.04096° (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 2457995 2.2309653 +22.078110 1.207635102 +8.6 xx 2457996 2.2445122 +22.185182 1.197871049 +8.5 xx 2457997 2.2576149 +22.289512 1.188188834 +8.5 xx 2457998 2.2702646 +22.391050 1.178590200 +8.5 1 2457999 2.2824525 +22.489744 1.169076901 +8.5 2 2458000 2.2941699 +22.585541 1.159650700 +8.4 3 2458001 2.3054076 +22.678386 1.150313373 +8.4 4 2458002 2.3161568 +22.768221 1.141066723 +8.4 5 2458003 2.3264085 +22.854990 1.131912587 +8.4 6 2458004 2.3361538 +22.938632 1.122852861 +8.3 7 2458005 2.3453837 +23.019084 1.113889516 +8.3 8 2458006 2.3540892 +23.096284 1.105024628 +8.3 9 2458007 2.3622614 +23.170165 1.096260393 +8.3 10 2458008 2.3698910 +23.240659 1.087599151 +8.2 11 2458009 2.3769690 +23.307691 1.079043386 +8.2 12 2458010 2.3834866 +23.371188 1.070595736 +8.2 13 2458011 2.3894351 +23.431070 1.062258976 +8.1 14 2458012 2.3948066 +23.487257 1.054036006 +8.1 15 2458013 2.3995941 +23.539668 1.045929829 +8.1 16 2458014 2.4037916 +23.588222 1.037943520 +8.1 17 2458015 2.4073942 +23.632841 1.030080198 +8.0 18 2458016 2.4103983 +23.673448 1.022342996 +8.0 19 2458017 2.4128012 +23.709972 1.014735031 +8.0 20 2458018 2.4146015 +23.742345 1.007259389 +7.9 21 2458019 2.4157984 +23.770499 0.999919113 +7.9 22 2458020 2.4163917 +23.794372 0.992717199 +7.9 23 2458021 2.4163822 +23.813900 0.985656600 +7.9 24 2458022 2.4157710 +23.829025 0.978740232 +7.8 25 2458023 2.4145602 +23.839687 0.971970977 +7.8 26 2458024 2.4127525 +23.845829 0.965351692 +7.8 27 2458025 2.4103517 +23.847398 0.958885208 +7.7 28 2458026 2.4073619 +23.844341 0.952574332 +7.7 29 2458027 2.4037888 +23.836609 0.946421844 +7.7 30 2458028 2.3996383 +23.824158 0.940430495 +7.6 xx 2458029 2.3949179 +23.806944 0.934603009 +7.6 xx 2458030 2.3896355 +23.784930 0.928942084 +7.6 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================
Programmed in PHP by Jay Tanner - 2017 - v4.0
Revised 2015 Jun 12