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 Dec 21 - Sat Local Time = 15:42:13 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460666.15431713 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 22h 17m 42.37s = 22.2951022h = 334.4265330° Declination = -05° 23' 15.17" = -5.387546° True Distance = 2.153137655 AU = 322.104808 Mkm = 200.146649 Mmi Visual Magnitude = +9.8 Horizontal Parallax = 4.084" = 0.068072' = 0.001134539° Light/Signal Time = 17m 54.426s ================================================================================ 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 = 22h 17m 42.57s = 22.2951579h = 334.4273679° Topocentric Decl = -05° 23' 17.94" = -5.388316° Local Hour Angle = -05h 40m 01.09s = -85.004549607948° (W=Negative) Local Sidereal Time = 16h 37m 41.476s = 16.628187886h = 249.422818287° Azimuth = 97.34267° (Measured clockwise from N=0°) = 277.34267° (Measured clockwise from S=0°) Direction = E Altitude = -0.00505° (Setting) ================================================================================ Asteroid Iris ephemeris table for each day of Dec. 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 2460643 21.6009405 -08.396414 1.959955398 +9.7 xx 2460644 21.6288384 -08.288867 1.968661173 +9.7 xx 2460645 21.6569534 -08.179199 1.977339731 +9.7 xx 2460646 21.6852812 -08.067422 1.985990009 +9.7 1 2460647 21.7138177 -07.953545 1.994610958 +9.7 2 2460648 21.7425582 -07.837583 2.003201556 +9.7 3 2460649 21.7714982 -07.719548 2.011760824 +9.8 4 2460650 21.8006331 -07.599455 2.020287839 +9.8 5 2460651 21.8299582 -07.477319 2.028781749 +9.8 6 2460652 21.8594693 -07.353154 2.037241787 +9.8 7 2460653 21.8891621 -07.226976 2.045667283 +9.8 8 2460654 21.9190329 -07.098798 2.054057677 +9.8 9 2460655 21.9490782 -06.968636 2.062412520 +9.8 10 2460656 21.9792946 -06.836505 2.070731477 +9.8 11 2460657 22.0096792 -06.702423 2.079014318 +9.8 12 2460658 22.0402288 -06.566409 2.087260896 +9.8 13 2460659 22.0709399 -06.428482 2.095471119 +9.8 14 2460660 22.1018095 -06.288665 2.103644916 +9.8 15 2460661 22.1328341 -06.146975 2.111782197 +9.8 16 2460662 22.1640108 -06.003431 2.119882828 +9.8 17 2460663 22.1953368 -05.858046 2.127946613 +9.8 18 2460664 22.2268098 -05.710835 2.135973292 +9.8 19 2460665 22.2584276 -05.561809 2.143962545 +9.8 20 2460666 22.2901884 -05.410981 2.151914001 +9.8 21 2460667 22.3220902 -05.258364 2.159827250 +9.8 22 2460668 22.3541314 -05.103970 2.167701853 +9.8 23 2460669 22.3863100 -04.947815 2.175537344 +9.8 24 2460670 22.4186244 -04.789913 2.183333238 +9.8 25 2460671 22.4510725 -04.630282 2.191089033 +9.8 26 2460672 22.4836526 -04.468939 2.198804208 +9.8 27 2460673 22.5163624 -04.305904 2.206478226 +9.8 28 2460674 22.5491998 -04.141198 2.214110538 +9.8 29 2460675 22.5821624 -03.974844 2.221700589 +9.8 30 2460676 22.6152476 -03.806866 2.229247833 +9.8 31 2460677 22.6484527 -03.637290 2.236751745 +9.8 xx 2460678 22.6817752 -03.466141 2.244211846 +9.8 xx 2460679 22.7152125 -03.293446 2.251627720 +9.8 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================