1986-03, 2month

Object Data Page

Results

******************************************************************************* Ephemeris / WWW_USER Fri Aug 23 07:38:31 2019 Pasadena, USA / Horizons ******************************************************************************* Target body name: 162173 Ryugu (1999 JU3) {source: JPL#120} Center body name: Earth (399) {source: DE431} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 1986-Mar-01 00:00:00.0000 UT Stop time : A.D. 1986-Apr-30 00:00:00.0000 UT Step-size : 1440 minutes ******************************************************************************* Target pole/equ : No model available Target radii : (unavailable) Center geodetic : 0.00000000,0.00000000,0.0000000 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.00000000,0.00000000,0.0000000 {E-lon(deg),Dxy(km),Dz(km)} Center pole/equ : High-precision EOP model {East-longitude positive} Center radii : 6378.1 x 6378.1 x 6356.8 km {Equator, meridian, pole} Target primary : Sun Vis. interferer : MOON (R_eq= 1737.400) km {source: DE431} Rel. light bend : Sun, EARTH {source: DE431} Rel. lght bnd GM: 1.3271E+11, 3.9860E+05 km^3/s^2 Small-body perts: Yes {source: SB431-N16} Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL EOP file : eop.190822.p191113 EOP coverage : DATA-BASED 1962-JAN-20 TO 2019-AUG-22. PREDICTS-> 2019-NOV-12 Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO ) Table cut-offs 2: Solar elongation ( 0.0,180.0=NO ),Local Hour Angle( 0.0=NO ) Table cut-offs 3: RA/DEC angular rate ( 0.0=NO ) ******************************************************************************* Initial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.): EPOCH= 2455907.5 ! 2011-Dec-12.00 (TDB) Residual RMS= .30546 EC= .1902257533711703 QR= .9633081094119196 TP= 2455902.2563366606 OM= 251.6197109778495 W= 211.4258497031505 IN= 5.883742390778817 Equivalent ICRF heliocentric equatorial cartesian coordinates (au, au/d): X=-3.110574563985249E-01 Y= 8.593388225070249E-01 Z= 3.071612761016043E-01 VX=-1.808963327297997E-02 VY=-4.829575481927901E-03 VZ=-3.811446171459336E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= 7.627 H= 19.3 G= .150 B-V= n.a. ALBEDO= n.a. STYP= Cg Asteroid non-gravitational force model (AMRAT= m^2/kg;A1,A2,A3=au/d^2;R0=au): AMRAT= 0. A1= 0. A2= -3.371880211489E-14 A3= 0. Non-standard or simulated/proxy model: ALN= 1. NK= 0. NM= 2. NN= 5.093 R0= 1. ******************************************************************************************************* Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC APmag delta deldot S-O-T /r S-T-O ******************************************************************************************************* $$SOE 1986-Mar-01 00:00 14 28 14.44 -48 43 36.4 18.24 0.20362390843324 0.2238703 105.7729 /L 63.6180 1986-Mar-02 00:00 14 28 30.98 -48 44 24.5 18.22 0.20373571093535 0.1637465 106.5632 /L 62.8928 1986-Mar-03 00:00 14 28 42.53 -48 44 41.8 18.21 0.20381355633895 0.1063251 107.3680 /L 62.1576 1986-Mar-04 00:00 14 28 48.96 -48 44 26.9 18.19 0.20385910061550 0.0519359 108.1876 /L 61.4120 1986-Mar-05 00:00 14 28 50.18 -48 43 38.5 18.17 0.20387418802969 0.0008992 109.0225 /L 60.6557 1986-Mar-06 00:00 14 28 46.08 -48 42 15.1 18.16 0.20386084245648 -0.0464850 109.8729 /L 59.8881 1986-Mar-07 00:00 14 28 36.59 -48 40 14.9 18.14 0.20382125322504 -0.0899448 110.7392 /L 59.1091 1986-Mar-08 00:00 14 28 21.65 -48 37 36.5 18.12 0.20375775689409 -0.1292430 111.6217 /L 58.3182 1986-Mar-09 00:00 14 28 01.22 -48 34 18.1 18.10 0.20367281647879 -0.1641791 112.5206 /L 57.5151 1986-Mar-10 00:00 14 27 35.28 -48 30 18.0 18.08 0.20356900000129 -0.1945894 113.4360 /L 56.6996 1986-Mar-11 00:00 14 27 03.85 -48 25 34.6 18.06 0.20344896053218 -0.2203421 114.3682 /L 55.8714 1986-Mar-12 00:00 14 26 26.95 -48 20 06.2 18.04 0.20331541975533 -0.2413300 115.3173 /L 55.0305 1986-Mar-13 00:00 14 25 44.62 -48 13 51.2 18.02 0.20317115637964 -0.2574614 116.2832 /L 54.1766 1986-Mar-14 00:00 14 24 56.92 -48 06 47.9 18.00 0.20301899963327 -0.2686518 117.2661 /L 53.3097 1986-Mar-15 00:00 14 24 03.93 -47 58 54.7 17.98 0.20286182700941 -0.2748177 118.2659 /L 52.4297 1986-Mar-16 00:00 14 23 05.76 -47 50 10.0 17.96 0.20270256473594 -0.2758735 119.2825 /L 51.5365 1986-Mar-17 00:00 14 22 02.52 -47 40 32.3 17.94 0.20254418924737 -0.2717312 120.3159 /L 50.6303 1986-Mar-18 00:00 14 20 54.33 -47 30 00.0 17.92 0.20238972816294 -0.2623021 121.3658 /L 49.7110 1986-Mar-19 00:00 14 19 41.35 -47 18 31.7 17.90 0.20224225975883 -0.2475000 122.4321 /L 48.7788 1986-Mar-20 00:00 14 18 23.74 -47 06 05.9 17.87 0.20210491053529 -0.2272446 123.5146 /L 47.8338 1986-Mar-21 00:00 14 17 01.68 -46 52 41.3 17.85 0.20198085117194 -0.2014635 124.6129 /L 46.8763 1986-Mar-22 00:00 14 15 35.36 -46 38 16.6 17.83 0.20187329195077 -0.1700915 125.7266 /L 45.9066 1986-Mar-23 00:00 14 14 05.01 -46 22 50.7 17.81 0.20178547958422 -0.1330665 126.8552 /L 44.9249 1986-Mar-24 00:00 14 12 30.82 -46 06 22.5 17.78 0.20172069815519 -0.0903193 127.9984 /L 43.9317 1986-Mar-25 00:00 14 10 53.04 -45 48 51.1 17.76 0.20168227712129 -0.0417593 129.1553 /L 42.9276 1986-Mar-26 00:00 14 09 11.91 -45 30 15.5 17.74 0.20167360841376 0.0127419 130.3255 /L 41.9129 1986-Mar-27 00:00 14 07 27.65 -45 10 34.9 17.72 0.20169817207737 0.0733623 131.5081 /L 40.8884 1986-Mar-28 00:00 14 05 40.53 -44 49 48.8 17.69 0.20175956605079 0.1403310 132.7022 /L 39.8547 1986-Mar-29 00:00 14 03 50.82 -44 27 56.5 17.67 0.20186153229516 0.2139141 133.9070 /L 38.8127 1986-Mar-30 00:00 14 01 58.78 -44 04 57.7 17.65 0.20200797082737 0.2943875 135.1212 /L 37.7632 1986-Mar-31 00:00 14 00 04.70 -43 40 52.0 17.63 0.20220293627235 0.3820054 136.3435 /L 36.7075 1986-Apr-01 00:00 13 58 08.90 -43 15 39.6 17.61 0.20245061676913 0.4769721 137.5726 /L 35.6466 1986-Apr-02 00:00 13 56 11.70 -42 49 20.8 17.59 0.20275529952196 0.5794242 138.8067 /L 34.5821 1986-Apr-03 00:00 13 54 13.45 -42 21 56.1 17.57 0.20312132903046 0.6894228 140.0439 /L 33.5156 1986-Apr-04 00:00 13 52 14.48 -41 53 26.5 17.55 0.20355306321824 0.8069536 141.2819 /L 32.4490 1986-Apr-05 00:00 13 50 15.17 -41 23 53.5 17.53 0.20405483074988 0.9319304 142.5182 /L 31.3844 1986-Apr-06 00:00 13 48 15.89 -40 53 18.8 17.51 0.20463089111841 1.0642007 143.7501 /L 30.3242 1986-Apr-07 00:00 13 46 16.99 -40 21 44.5 17.49 0.20528539816231 1.2035521 144.9743 /L 29.2711 1986-Apr-08 00:00 13 44 18.85 -39 49 13.2 17.47 0.20602236742349 1.3497192 146.1874 /L 28.2280 1986-Apr-09 00:00 13 42 21.83 -39 15 47.9 17.46 0.20684564779693 1.5023916 147.3855 /L 27.1982 1986-Apr-10 00:00 13 40 26.26 -38 41 31.7 17.44 0.20775889789512 1.6612222 148.5644 /L 26.1854 1986-Apr-11 00:00 13 38 32.48 -38 06 28.3 17.43 0.20876556729496 1.8258354 149.7192 /L 25.1934 1986-Apr-12 00:00 13 36 40.80 -37 30 41.6 17.42 0.20986888239946 1.9958349 150.8449 /L 24.2268 1986-Apr-13 00:00 13 34 51.52 -36 54 15.8 17.41 0.21107183620501 2.1708095 151.9358 /L 23.2900 1986-Apr-14 00:00 13 33 04.91 -36 17 15.0 17.40 0.21237718099860 2.3503374 152.9858 /L 22.3882 1986-Apr-15 00:00 13 31 21.22 -35 39 44.0 17.39 0.21378742301350 2.5339887 153.9884 /T 21.5269 1986-Apr-16 00:00 13 29 40.67 -35 01 47.3 17.39 0.21530481834617 2.7213273 154.9364 /T 20.7118 1986-Apr-17 00:00 13 28 03.46 -34 23 29.6 17.38 0.21693136992019 2.9119128 155.8225 /T 19.9489 1986-Apr-18 00:00 13 26 29.78 -33 44 55.8 17.38 0.21866882591204 3.1053041 156.6389 /T 19.2445 1986-Apr-19 00:00 13 24 59.78 -33 06 10.5 17.39 0.22051868077891 3.3010650 157.3779 /T 18.6049 1986-Apr-20 00:00 13 23 33.59 -32 27 18.5 17.39 0.22248218078424 3.4987743 158.0318 /T 18.0360 1986-Apr-21 00:00 13 22 11.31 -31 48 24.5 17.40 0.22456033651082 3.6980398 158.5934 /T 17.5437 1986-Apr-22 00:00 13 20 53.03 -31 09 33.0 17.42 0.22675394485572 3.8985168 159.0561 /T 17.1328 1986-Apr-23 00:00 13 19 38.81 -30 30 48.1 17.43 0.22906362172894 4.0999260 159.4146 /T 16.8074 1986-Apr-24 00:00 13 18 28.68 -29 52 14.2 17.45 0.23148984353590 4.3020645 159.6652 /T 16.5701 1986-Apr-25 00:00 13 17 22.68 -29 13 55.1 17.48 0.23403299087208 4.5048009 159.8058 /T 16.4221 1986-Apr-26 00:00 13 16 20.80 -28 35 54.5 17.50 0.23669338386116 4.7080516 159.8364 /T 16.3628 1986-Apr-27 00:00 13 15 23.06 -27 58 15.8 17.53 0.23947129856531 4.9117406 159.7591 /T 16.3901 1986-Apr-28 00:00 13 14 29.45 -27 21 02.3 17.57 0.24236695958421 5.1157597 159.5779 /T 16.5001 1986-Apr-29 00:00 13 13 39.95 -26 44 17.2 17.61 0.24538051277308 5.3199418 159.2985 /T 16.6878 1986-Apr-30 00:00 13 12 54.57 -26 08 03.3 17.65 0.24851198855711 5.5240550 158.9279 /T 16.9468 $$EOE ******************************************************************************************************* Column meaning: TIME Times PRIOR to 1962 are UT1, a mean-solar time closely related to the prior but now-deprecated GMT. Times AFTER 1962 are in UTC, the current civil or "wall-clock" time-scale. UTC is kept within 0.9 seconds of UT1 by introduction of integer leap-seconds for 1972 and later. Conversion from the internal Barycentric Dynamical Time (TDB) to the non-uniform civil UT time-scale requested for output has not been determined for UTC times after the next July or January 1st. Therefore, the last known leap-second is used as a constant over future intervals. Time tags refer to the UT time-scale conversion on Earth regardless of where the observer is located in the solar system. For example, if an observation from the surface of another body has an output time-tag of 12:31:00 UT, it refers to a time-scale conversion from TDB to UT valid at the center of the Earth at that instant, not the observer's location elsewhere in the solar system, where clock rates may differ slightly due to the local gravity field and there is no precisely defined or adopted "UT" analog. Any 'b' symbol in the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D. date. Calendar dates prior to 1582-Oct-15 are in the Julian calendar system. Later calendar dates are in the Gregorian system. NOTE: "n.a." in output means quantity "not available" at the print-time. R.A._(ICRF/J2000.0)_DEC = Astrometric right ascension and declination of the TARGET CENTER with respect to the observing site in the coordinates of the ICRF/J2000 inertial reference frame. Compensated for down-leg light-time. Units: RA in hours-minutes-seconds of time (HH MM SS.ff), DEC in angular degrees-minutes-seconds (DD MM SS.f) APmag = Asteroid's approximate apparent visual magnitude from the standard IAU H-G magnitude relationship: APmag = H + 5*log10(delta) + 5*log10(r) - 2.5*log10((1-G)*phi1 + G*phi2). For solar phase angles > 90 deg, the error could exceed 1 magnitude. For phase angles > 120 degrees, output values are rounded to the nearest integer to indicate error could be large and unknown. Units: MAGNITUDE delta deldot = Range ("delta") and range-rate ("delta-dot") of target center with respect to the observer at the instant light seen by the observer at print-time would have left the target center (print-time minus down-leg light-time); the distance traveled by a light ray emanating from the center of the target and recorded by the observer at print-time. "deldot" is a projection of the velocity vector along this ray, the light-time-corrected line-of-sight from the coordinate center, and indicates relative motion. A positive "deldot" means the target center is moving away from the observer (coordinate center). A negative "deldot" means the target center is moving toward the observer. Units: AU and KM/S S-O-T /r = Sun-Observer-Target angle; target's apparent SOLAR ELONGATION seen from the observer location at print-time. Angular units: DEGREES The '/r' column indicates the target's apparent position relative to the Sun in the observer's sky, as described below: For an observing location on the surface of a rotating body (considering its rotational sense): /T indicates target TRAILS Sun (evening sky; rises and sets AFTER Sun) /L indicates target LEADS Sun (morning sky; rises and sets BEFORE Sun) For an observing point NOT on a rotating body (such as a spacecraft), the "leading" and "trailing" condition is defined by the observer's heliocentric orbital motion: if continuing in the observer's current direction of heliocentric motion would encounter the target's apparent longitude first, followed by the Sun's, the target LEADS the Sun as seen by the observer. If the Sun's apparent longitude would be encountered first, followed by the target's, the target TRAILS the Sun. NOTE: The S-O-T solar elongation angle is numerically the minimum separation angle of the Sun and target in the sky in any direction. It does NOT indicate the amount of separation in the leading or trailing directions, which are defined in the equator of a spherical coordinate system. S-T-O = "S-T-O" is the Sun->Target->Observer angle; the interior vertex angle at target center formed by a vector to the apparent center of the Sun at reflection time on the target and the apparent vector to the observer at print-time. Slightly different from true PHASE ANGLE (requestable separately) at the few arcsecond level in that it includes stellar aberration on the down-leg from target to observer. Units: DEGREES Computations by ... Solar System Dynamics Group, Horizons On-Line Ephemeris System 4800 Oak Grove Drive, Jet Propulsion Laboratory Pasadena, CA 91109 USA Information: http://ssd.jpl.nasa.gov/ Connect : telnet://ssd.jpl.nasa.gov:6775 (via browser) telnet ssd.jpl.nasa.gov 6775 (via command-line) Author : Jon.D.Giorgini@jpl.nasa.gov *******************************************************************************************************