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 Oct 21 - Tue Local Time = 13:55:01 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460970.07987269 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 09h 53m 40.41s = 9.8945574h = 148.4183610° Declination = +09° 13' 41.17" = +9.228104° True Distance = 2.457147879 AU = 367.584091 Mkm = 228.406165 Mmi Visual Magnitude = +10.3 Horizontal Parallax = 3.579" = 0.059650' = 0.000994169° Light/Signal Time = 20m 26.129s ================================================================================ 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 = 09h 53m 40.36s = 9.8945456h = 148.4181847° Topocentric Decl = +09° 13' 39.20" = +9.227555° Local Hour Angle = +00h 55m 04.52s = 13.768844610748° (W=Negative) Local Sidereal Time = 10h 48m 44.887s = 10.812468621h = 162.187029313° Azimuth = 203.78437° (Measured clockwise from N=0°) = 23.78437° (Measured clockwise from S=0°) Direction = SSW Altitude = +54.37243° (Above Local Horizon - No refractions applied) ================================================================================ Asteroid Iris ephemeris table for each day of Oct. 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 2460947 9.2433377 +13.247910 2.623527287 +10.3 xx 2460948 9.2736348 +13.076952 2.617139725 +10.3 xx 2460949 9.3037491 +12.905522 2.610676593 +10.3 xx 2460950 9.3336796 +12.733649 2.604138235 +10.3 1 2460951 9.3634255 +12.561361 2.597524980 +10.3 2 2460952 9.3929859 +12.388682 2.590837130 +10.3 3 2460953 9.4223601 +12.215636 2.584074942 +10.3 4 2460954 9.4515478 +12.042245 2.577238610 +10.3 5 2460955 9.4805488 +11.868530 2.570328244 +10.3 6 2460956 9.5093632 +11.694510 2.563343863 +10.3 7 2460957 9.5379909 +11.520207 2.556285403 +10.3 8 2460958 9.5664316 +11.345649 2.549152738 +10.3 9 2460959 9.5946842 +11.170862 2.541945725 +10.3 10 2460960 9.6227471 +10.995880 2.534664245 +10.3 11 2460961 9.6506181 +10.820734 2.527308245 +10.3 12 2460962 9.6782950 +10.645456 2.519877765 +10.3 13 2460963 9.7057757 +10.470078 2.512372946 +10.3 14 2460964 9.7330579 +10.294630 2.504794042 +10.3 15 2460965 9.7601397 +10.119140 2.497141406 +10.3 16 2460966 9.7870195 +09.943639 2.489415490 +10.3 17 2460967 9.8136955 +09.768155 2.481616831 +10.3 18 2460968 9.8401661 +09.592717 2.473746048 +10.3 19 2460969 9.8664299 +09.417354 2.465803827 +10.3 20 2460970 9.8924853 +09.242097 2.457790917 +10.3 21 2460971 9.9183304 +09.066976 2.449708119 +10.3 22 2460972 9.9439636 +08.892022 2.441556280 +10.3 23 2460973 9.9693831 +08.717266 2.433336284 +10.3 24 2460974 9.9945868 +08.542740 2.425049043 +10.3 25 2460975 10.0195728 +08.368474 2.416695495 +10.3 26 2460976 10.0443389 +08.194499 2.408276597 +10.3 27 2460977 10.0688832 +08.020844 2.399793318 +10.2 28 2460978 10.0932035 +07.847540 2.391246637 +10.2 29 2460979 10.1172978 +07.674614 2.382637532 +10.2 30 2460980 10.1411642 +07.502092 2.373966971 +10.2 31 2460981 10.1648009 +07.329999 2.365235894 +10.2 xx 2460982 10.1882066 +07.158359 2.356445192 +10.2 xx 2460983 10.2113798 +06.987193 2.347595692 +10.2 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================