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 Jul 27 - Sat Local Time = 07:55:11 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460518.82998843 ================================================================================ Geocentric Equatorial Coordinates of Asteroid Iris Right Ascension = 21h 09m 52.62s = 21.1646166h = 317.4692490° Declination = -08° 15' 38.64" = -8.260734° True Distance = 1.294611984 AU = 193.671196 Mkm = 120.341702 Mmi Visual Magnitude = +8.4 Horizontal Parallax = 6.793" = 0.113215' = 0.001886912° Light/Signal Time = 10m 46.018s ================================================================================ 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 = 21h 09m 52.45s = 21.1645699h = 317.4685482° Topocentric Decl = -08° 15' 43.80" = -8.262168° Local Hour Angle = +01h 59m 56.58s = 29.985729374505° (W=Negative) Local Sidereal Time = 23h 09m 49.027s = 23.163618504h = 347.454277555° Azimuth = 215.73629° (Measured clockwise from N=0°) = 35.73629° (Measured clockwise from S=0°) Direction = SW Altitude = +32.13122° (Above Local Horizon - No refractions applied) ================================================================================ Asteroid Iris ephemeris table for each day of Jul. 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 2460490 21.4548650 -08.736434 1.530735749 +9.2 xx 2460491 21.4510157 -08.687334 1.519898165 +9.2 xx 2460492 21.4466880 -08.640405 1.509219662 +9.2 xx 2460493 21.4418814 -08.595683 1.498704061 +9.2 1 2460494 21.4365961 -08.553204 1.488355217 +9.1 2 2460495 21.4308325 -08.513002 1.478176992 +9.1 3 2460496 21.4245917 -08.475108 1.468173215 +9.1 4 2460497 21.4178753 -08.439549 1.458347664 +9.0 5 2460498 21.4106856 -08.406350 1.448704035 +9.0 6 2460499 21.4030258 -08.375530 1.439245936 +9.0 7 2460500 21.3948998 -08.347103 1.429976870 +9.0 8 2460501 21.3863124 -08.321082 1.420900243 +8.9 9 2460502 21.3772690 -08.297474 1.412019360 +8.9 10 2460503 21.3677760 -08.276286 1.403337429 +8.9 11 2460504 21.3578401 -08.257521 1.394857565 +8.8 12 2460505 21.3474689 -08.241180 1.386582795 +8.8 13 2460506 21.3366704 -08.227264 1.378516048 +8.8 14 2460507 21.3254533 -08.215771 1.370660162 +8.7 15 2460508 21.3138267 -08.206695 1.363017877 +8.7 16 2460509 21.3018004 -08.200033 1.355591835 +8.7 17 2460510 21.2893844 -08.195778 1.348384581 +8.7 18 2460511 21.2765890 -08.193922 1.341398573 +8.6 19 2460512 21.2634250 -08.194456 1.334636196 +8.6 20 2460513 21.2499034 -08.197368 1.328099787 +8.6 21 2460514 21.2360360 -08.202644 1.321791658 +8.5 22 2460515 21.2218350 -08.210268 1.315714123 +8.5 23 2460516 21.2073139 -08.220215 1.309869509 +8.5 24 2460517 21.1924874 -08.232462 1.304260157 +8.4 25 2460518 21.1773711 -08.246980 1.298888398 +8.4 26 2460519 21.1619817 -08.263740 1.293756528 +8.4 27 2460520 21.1463368 -08.282708 1.288866761 +8.3 28 2460521 21.1304544 -08.303849 1.284221193 +8.3 29 2460522 21.1143537 -08.327123 1.279821763 +8.3 30 2460523 21.0980542 -08.352487 1.275670226 +8.3 31 2460524 21.0815762 -08.379891 1.271768121 +8.2 xx 2460525 21.0649408 -08.409279 1.268116759 +8.2 xx 2460526 21.0481696 -08.440592 1.264717206 +8.2 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ================================================================================