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 = 2025 Dec 07 - Sun Local Time = 09:28:07 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461016.89452546 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 10h 50m 17.21s = 10.8381143h = 162.5717145° Declination = +01° 41' 35.89" = +1.693304° True Distance = 2.020606882 AU = 302.278487 Mkm = 187.827144 Mmi Visual Magnitude = +10.0 Horizontal Parallax = 4.352" = 0.072537' = 0.001208953° Light/Signal Time = 16m 48.293s ================================================================================ 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 = 10h 50m 17.29s = 10.8381355h = 162.5720328° Topocentric Decl = +01° 41' 33.05" = +1.692512° Local Hour Angle = -01h 23m 52.04s = -20.966836136296° (W=Negative) Local Sidereal Time = 09h 26m 25.247s = 9.440346443h = 141.605196648° Azimuth = 149.69333° (Measured clockwise from N=0°) = 329.69333° (Measured clockwise from S=0°) Direction = SSE Altitude = +44.86409° (Above Local Horizon - No refractions applied) ================================================================================ 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 2461008 10.7069233 +02.953734 2.109989156 +10.1 xx 2461009 10.7229789 +02.806298 2.100002078 +10.1 xx 2461010 10.7387117 +02.660241 2.089994882 +10.1 xx 2461011 10.7541186 +02.515589 2.079969551 +10.1 1 2461012 10.7691964 +02.372374 2.069928016 +10.1 2 2461013 10.7839417 +02.230628 2.059872146 +10.0 3 2461014 10.7983505 +02.090385 2.049803761 +10.0 4 2461015 10.8124180 +01.951685 2.039724673 +10.0 5 2461016 10.8261389 +01.814573 2.029636729 +10.0 6 2461017 10.8395076 +01.679093 2.019541865 +10.0 7 2461018 10.8525183 +01.545291 2.009442154 +10.0 8 2461019 10.8651655 +01.413210 1.999339825 +10.0 9 2461020 10.8774439 +01.282894 1.989237270 +10.0 10 2461021 10.8893483 +01.154387 1.979137035 +10.0 11 2461022 10.9008736 +01.027734 1.969041812 +10.0 12 2461023 10.9120148 +00.902979 1.958954416 +9.9 13 2461024 10.9227667 +00.780168 1.948877779 +9.9 14 2461025 10.9331242 +00.659348 1.938814938 +9.9 15 2461026 10.9430820 +00.540565 1.928769029 +9.9 16 2461027 10.9526351 +00.423868 1.918743284 +9.9 17 2461028 10.9617780 +00.309305 1.908741021 +9.9 18 2461029 10.9705055 +00.196925 1.898765644 +9.9 19 2461030 10.9788125 +00.086776 1.888820633 +9.9 20 2461031 10.9866938 -00.021094 1.878909537 +9.9 21 2461032 10.9941445 -00.126636 1.869035962 +9.8 22 2461033 11.0011596 -00.229805 1.859203562 +9.8 23 2461034 11.0077348 -00.330554 1.849416027 +9.8 24 2461035 11.0138657 -00.428841 1.839677071 +9.8 25 2461036 11.0195486 -00.524624 1.829990415 +9.8 26 2461037 11.0247798 -00.617862 1.820359778 +9.8 27 2461038 11.0295563 -00.708517 1.810788863 +9.8 28 2461039 11.0338748 -00.796549 1.801281342 +9.7 29 2461040 11.0377324 -00.881920 1.791840852 +9.7 30 2461041 11.0411259 -00.964588 1.782470990 +9.7 31 2461042 11.0440518 -01.044509 1.773175330 +9.7 xx 2461043 11.0465061 -01.121633 1.763957449 +9.7 xx 2461044 11.0484847 -01.195912 1.754820971 +9.7 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================