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 Jul 18 - Sat Local Time = 02:44:49 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461239.61445602 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 11h 21m 17.74s = 11.3549272h = 170.3239080° Declination = -00° 43' 34.07" = -0.726130° True Distance = 3.212161431 AU = 480.532510 Mkm = 298.589059 Mmi Visual Magnitude = +11.2 Horizontal Parallax = 2.738" = 0.045629' = 0.000760491° Light/Signal Time = 26m 42.884s ================================================================================ 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 = 11h 21m 17.60s = 11.3548899h = 170.3233487° Topocentric Decl = -00° 43' 35.92" = -0.726644° Local Hour Angle = +05h 59m 55.53s = 89.98139739311° (W=Negative) Local Sidereal Time = 17h 21m 13.139s = 17.353649737h = 260.304746059° Azimuth = 269.45379° (Measured clockwise from N=0°) = 89.45379° (Measured clockwise from S=0°) Direction = W Altitude = -0.47960° (Rising) ================================================================================ Asteroid Iris ephemeris table for each day of Jul. 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 2461220 10.9558186 +01.319716 2.950347703 +11.0 xx 2461221 10.9752580 +01.225334 2.964325712 +11.1 xx 2461222 10.9948054 +01.129801 2.978243801 +11.1 xx 2461223 11.0144585 +01.033133 2.992100769 +11.1 1 2461224 11.0342151 +00.935349 3.005895412 +11.1 2 2461225 11.0540732 +00.836463 3.019626511 +11.1 3 2461226 11.0740309 +00.736489 3.033292826 +11.1 4 2461227 11.0940868 +00.635441 3.046893087 +11.1 5 2461228 11.1142393 +00.533331 3.060425983 +11.1 6 2461229 11.1344874 +00.430168 3.073890148 +11.1 7 2461230 11.1548300 +00.325965 3.087284158 +11.1 8 2461231 11.1752660 +00.220732 3.100606516 +11.1 9 2461232 11.1957942 +00.114480 3.113855647 +11.1 10 2461233 11.2164133 +00.007225 3.127029899 +11.1 11 2461234 11.2371213 -00.101018 3.140127558 +11.1 12 2461235 11.2579159 -00.210228 3.153146876 +11.1 13 2461236 11.2787947 -00.320384 3.166086116 +11.2 14 2461237 11.2997552 -00.431466 3.178943596 +11.2 15 2461238 11.3207953 -00.543456 3.191717729 +11.2 16 2461239 11.3419132 -00.656336 3.204407051 +11.2 17 2461240 11.3631074 -00.770090 3.217010224 +11.2 18 2461241 11.3843766 -00.884702 3.229526022 +11.2 19 2461242 11.4057195 -01.000158 3.241953316 +11.2 20 2461243 11.4271347 -01.116441 3.254291052 +11.2 21 2461244 11.4486207 -01.233534 3.266538232 +11.2 22 2461245 11.4701763 -01.351421 3.278693904 +11.2 23 2461246 11.4917997 -01.470083 3.290757146 +11.2 24 2461247 11.5134897 -01.589505 3.302727065 +11.2 25 2461248 11.5352447 -01.709670 3.314602791 +11.2 26 2461249 11.5570633 -01.830560 3.326383468 +11.2 27 2461250 11.5789441 -01.952160 3.338068251 +11.2 28 2461251 11.6008859 -02.074455 3.349656299 +11.2 29 2461252 11.6228877 -02.197430 3.361146763 +11.2 30 2461253 11.6449484 -02.321073 3.372538777 +11.2 31 2461254 11.6670674 -02.445372 3.383831445 +11.2 xx 2461255 11.6892442 -02.570316 3.395023831 +11.2 xx 2461256 11.7114786 -02.695896 3.406114947 +11.2 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================