Asteroid Iris Ephemeris Calculator
Based on the U.S. Naval Observatory Asteroid Ephemeris, 1998
Date: (1800 to 2099) Y m d
Local Time (00h to 24h) H:M:S
Local Time Zone Offset ±H:M
Undefined1
Std. Time = 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 = 2018 Dec 13 - Thu Local Time = 22:32:39 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2458466.43934028 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 12h 41m 09.30s = 12.6859173h = 190.2887595° Declination = -10° 00' 26.01" = -10.007226° True Distance = 2.825426253 AU = 422.677751 Mkm = 262.639778 Mmi Visual Magnitude = +10.9 Horizontal Parallax = 3.113" = 0.051875' = 0.000864584° Light/Signal Time = 23m 29.901s ================================================================================ 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 = 12h 41m 09.23s = 12.6858982h = 190.2884724° Topocentric Decl = -10° 00' 27.73" = -10.007702° Local Hour Angle = +10h 14m 22.93s = 153.59553695777° (W=Negative) Local Sidereal Time = 22h 55m 32.162s = 22.925600622h = 343.884009327° Azimuth = 317.09247° (Measured clockwise from N=0°) = 137.09247° (Measured clockwise from S=0°) Direction = NW Altitude = -49.96509° (Invisible - Below Local Horizon) ================================================================================ 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 2458451 12.3860531 -07.739960 2.983151175 +10.9 xx 2458452 12.4066475 -07.893697 2.973583342 +10.9 xx 2458453 12.4270919 -08.046557 2.963919671 +10.9 xx 2458454 12.4473837 -08.198523 2.954161190 +10.9 1 2458455 12.4675206 -08.349580 2.944309050 +10.9 2 2458456 12.4874998 -08.499712 2.934364526 +10.9 3 2458457 12.5073188 -08.648902 2.924329008 +10.9 4 2458458 12.5269744 -08.797133 2.914203994 +10.9 5 2458459 12.5464638 -08.944385 2.903991073 +10.9 6 2458460 12.5657838 -09.090640 2.893691913 +10.9 7 2458461 12.5849311 -09.235878 2.883308242 +10.9 8 2458462 12.6039025 -09.380079 2.872841835 +10.9 9 2458463 12.6226947 -09.523224 2.862294498 +10.9 10 2458464 12.6413046 -09.665294 2.851668064 +10.9 11 2458465 12.6597293 -09.806269 2.840964377 +10.9 12 2458466 12.6779656 -09.946134 2.830185296 +10.9 13 2458467 12.6960107 -10.084870 2.819332688 +10.9 14 2458468 12.7138618 -10.222463 2.808408424 +10.9 15 2458469 12.7315162 -10.358895 2.797414378 +10.9 16 2458470 12.7489709 -10.494154 2.786352419 +10.9 17 2458471 12.7662235 -10.628224 2.775224401 +10.9 18 2458472 12.7832711 -10.761092 2.764032151 +10.9 19 2458473 12.8001108 -10.892745 2.752777457 +10.9 20 2458474 12.8167396 -11.023169 2.741462051 +10.9 21 2458475 12.8331540 -11.152348 2.730087616 +10.8 22 2458476 12.8493501 -11.280264 2.718655784 +10.8 23 2458477 12.8653236 -11.406897 2.707168173 +10.8 24 2458478 12.8810702 -11.532225 2.695626421 +10.8 25 2458479 12.8965854 -11.656228 2.684032234 +10.8 26 2458480 12.9118650 -11.778884 2.672387428 +10.8 27 2458481 12.9269049 -11.900172 2.660693951 +10.8 28 2458482 12.9417009 -12.020073 2.648953901 +10.8 29 2458483 12.9562487 -12.138565 2.637169520 +10.8 30 2458484 12.9705440 -12.255627 2.625343186 +10.8 31 2458485 12.9845823 -12.371236 2.613477405 +10.8 xx 2458486 12.9983588 -12.485367 2.601574789 +10.8 xx 2458487 13.0118686 -12.597998 2.589638053 +10.8 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================
Programmed in PHP by Jay Tanner - 2018 - v4.0
Revised 2015 Jun 12