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 = 2024 Mar 29 - Fri Local Time = 09:21:37 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460398.89001157 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 20h 18m 07.29s = 20.3020241h = 304.5303615° Declination = -17° 41' 36.97" = -17.693603° True Distance = 2.817279947 AU = 421.459081 Mkm = 261.882532 Mmi Visual Magnitude = +10.9 Horizontal Parallax = 3.122" = 0.052025' = 0.000867084° Light/Signal Time = 23m 25.836s ================================================================================ 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 = 20h 18m 07.42s = 20.3020601h = 304.5309009° Topocentric Decl = -17° 41' 39.39" = -17.694276° Local Hour Angle = -03h 34m 45.04s = -53.687675341123° (W=Negative) Local Sidereal Time = 16h 43m 22.374s = 16.722881701h = 250.843225517° Azimuth = 128.29445° (Measured clockwise from N=0°) = 308.29445° (Measured clockwise from S=0°) Direction = SE Altitude = +12.00208° (Above Local Horizon - No refractions applied) ================================================================================ 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 2460368 19.5152105 -20.567973 3.223153308 +11.0 xx 2460369 19.5423190 -20.488299 3.211254803 +11.0 xx 2460370 19.5693367 -20.407593 3.199260831 +11.0 xx 2460371 19.5962620 -20.325867 3.187172374 +11.0 1 2460372 19.6230934 -20.243135 3.174990419 +11.0 2 2460373 19.6498291 -20.159410 3.162715972 +11.0 3 2460374 19.6764672 -20.074707 3.150350062 +11.0 4 2460375 19.7030052 -19.989042 3.137893759 +11.0 5 2460376 19.7294405 -19.902431 3.125348193 +11.0 6 2460377 19.7557705 -19.814886 3.112714576 +11.0 7 2460378 19.7819922 -19.726424 3.099994230 +11.0 8 2460379 19.8081031 -19.637054 3.087188605 +11.0 9 2460380 19.8341013 -19.546787 3.074299286 +11.0 10 2460381 19.8599852 -19.455636 3.061327981 +11.0 11 2460382 19.8857535 -19.363614 3.048276480 +11.0 12 2460383 19.9114052 -19.270739 3.035146607 +11.0 13 2460384 19.9369388 -19.177028 3.021940177 +11.0 14 2460385 19.9623527 -19.082501 3.008658956 +11.0 15 2460386 19.9876451 -18.987177 2.995304647 +11.0 16 2460387 20.0128140 -18.891072 2.981878879 +10.9 17 2460388 20.0378575 -18.794203 2.968383218 +10.9 18 2460389 20.0627740 -18.696584 2.954819169 +10.9 19 2460390 20.0875617 -18.598228 2.941188183 +10.9 20 2460391 20.1122191 -18.499150 2.927491668 +10.9 21 2460392 20.1367445 -18.399361 2.913730993 +10.9 22 2460393 20.1611366 -18.298875 2.899907490 +10.9 23 2460394 20.1853939 -18.197704 2.886022460 +10.9 24 2460395 20.2095151 -18.095863 2.872077176 +10.9 25 2460396 20.2334988 -17.993365 2.858072889 +10.9 26 2460397 20.2573434 -17.890227 2.844010833 +10.9 27 2460398 20.2810472 -17.786464 2.829892232 +10.9 28 2460399 20.3046085 -17.682094 2.815718310 +10.9 29 2460400 20.3280251 -17.577137 2.801490296 +10.8 30 2460401 20.3512947 -17.471611 2.787209438 +10.8 31 2460402 20.3744147 -17.365538 2.772877014 +10.8 xx 2460403 20.3973821 -17.258939 2.758494344 +10.8 xx 2460404 20.4201939 -17.151834 2.744062810 +10.8 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================