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 Aug 14 - Fri Local Time = 17:43:54 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461267.23881944 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 11h 57m 54.56s = 11.9651556h = 179.4773340° Declination = -04° 08' 51.22" = -4.147562° True Distance = 3.523432906 AU = 527.098060 Mkm = 327.523550 Mmi Visual Magnitude = +11.2 Horizontal Parallax = 2.496" = 0.041598' = 0.000693307° Light/Signal Time = 29m 18.210s ================================================================================ 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 57m 54.62s = 11.9651712h = 179.4775675° Topocentric Decl = -04° 08' 53.02" = -4.148062° Local Hour Angle = -01h 48m 41.75s = -27.173974743505° (W=Negative) Local Sidereal Time = 10h 09m 12.862s = 10.153572848h = 152.303592727° Azimuth = 145.20246° (Measured clockwise from N=0°) = 325.20246° (Measured clockwise from S=0°) Direction = SE Altitude = +37.04442° (Above Local Horizon - No refractions applied) ================================================================================ Asteroid Iris ephemeris table for each day of Aug. 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 2461251 11.6008859 -02.074455 3.349656299 +11.2 xx 2461252 11.6228877 -02.197430 3.361146763 +11.2 xx 2461253 11.6449484 -02.321073 3.372538777 +11.2 xx 2461254 11.6670674 -02.445372 3.383831445 +11.2 1 2461255 11.6892442 -02.570316 3.395023831 +11.2 2 2461256 11.7114786 -02.695896 3.406114947 +11.2 3 2461257 11.7337703 -02.822103 3.417103742 +11.2 4 2461258 11.7561191 -02.948929 3.427989095 +11.2 5 2461259 11.7785247 -03.076363 3.438769810 +11.2 6 2461260 11.8009866 -03.204395 3.449444616 +11.2 7 2461261 11.8235040 -03.333010 3.460012171 +11.2 8 2461262 11.8460756 -03.462194 3.470471080 +11.2 9 2461263 11.8687000 -03.591929 3.480819914 +11.2 10 2461264 11.8913757 -03.722196 3.491057255 +11.2 11 2461265 11.9141013 -03.852979 3.501181725 +11.2 12 2461266 11.9368757 -03.984259 3.511192031 +11.2 13 2461267 11.9596981 -04.116024 3.521086984 +11.2 14 2461268 11.9825679 -04.248260 3.530865509 +11.2 15 2461269 12.0054845 -04.380952 3.540526644 +11.2 16 2461270 12.0284473 -04.514088 3.550069517 +11.2 17 2461271 12.0514555 -04.647653 3.559493334 +11.2 18 2461272 12.0745082 -04.781631 3.568797358 +11.2 19 2461273 12.0976047 -04.916008 3.577980894 +11.2 20 2461274 12.1207439 -05.050768 3.587043282 +11.2 21 2461275 12.1439248 -05.185896 3.595983885 +11.2 22 2461276 12.1671467 -05.321377 3.604802089 +11.2 23 2461277 12.1904085 -05.457195 3.613497299 +11.2 24 2461278 12.2137096 -05.593336 3.622068932 +11.2 25 2461279 12.2370491 -05.729787 3.630516409 +11.2 26 2461280 12.2604267 -05.866534 3.638839152 +11.2 27 2461281 12.2838420 -06.003565 3.647036564 +11.2 28 2461282 12.3072948 -06.140872 3.655108021 +11.2 29 2461283 12.3307854 -06.278445 3.663052851 +11.2 30 2461284 12.3543139 -06.416276 3.670870323 +11.2 31 2461285 12.3778806 -06.554357 3.678559634 +11.2 xx 2461286 12.4014856 -06.692682 3.686119902 +11.2 xx 2461287 12.4251289 -06.831240 3.693550169 +11.2 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================