Efemérites para o Asteróide Mithra PDF Imprimir E-mail
Ephemeris Generator
Written: 1997 March 11 Modified: 2000 March 13 08:35 by: Alan B. Chamberlin for: Solar System Dynamics Group
 Jet Propulsion Laboratory.

Ephemeris Settings



Target Body: Asteroid 4486 Mithra (1987 SB)
Ephemeris Generation of Mithra made by Solar System Dynamics Group, Horizons On-Line Ephemeris System

Observer Location: User Specified Location
Coordinates: 44°13'00.1''W, 23°01'00.1''S, 251 m
From: A.D. 2000-08-26 00:00 UT
To: A.D. 2000-09-10 00:00
Step: 1 day
Format: Calendar Date and Time
Output Quantities: 1,4,9,20,28-29
Ref. Frame, RA/Dec Format: J2000, HMSApparent Coordinates Model: Airless

HORIZONS Body Information

*******************************************************************************

JPL/DASTCOM3 4486 Mithra (1987 SB) 2000-Aug-26 18:12:38
Rec #: 4486 soln data arc: 1974-2000 # obs: 150          
FK5/J2000.0 helio. ecliptic osc. elements (AU, DAYS, DEG, period=Julian yrs):  
EPOCH= 2451600.5 != 2000-Feb-26.0000000 (TDB)                   
EC= .662553349 QR= .742615274 TP= 2451726.5914632         
OM= 82.51404309999999 W= 168.5801874 IN= 3.046092                
A= 2.200689417 MA= 321.9327393 ADIST= 3.65876356           
PER= 3.26472 N= .301901966 ANGMOM= .019113982    
DAN= 3.52187 DDN= .74852 L= 251.1099424              
B= .602842 TP= 2000-Jul-01.0914632



Physical parameters (KM, SEC, rotational period in hours):

GM= n.a. RAD= n.a. ROTPER= n.a.  
H= 15.6 G= .150 B-V= n.a. 
ALBEDO= n.a. STYP= n.a.

 
ASTEROID comments:

1: soln ref.= JPL#31, 1987 SB radar( 8 delay, 9 Dop.)

2:

*******************************************************************************

HORIZONS Generated Ephemeris

*******************************************************************************


Ephemeris / WWW_USER Sat Aug 26 18:12:41 2000 Pasadena, USA / JPL-Horizons

*******************************************************************************

Target body name: 4486 Mithra (1987 SB) {source: 31}
Center body name: Earth (399) {source: DE-0406LE-0406}
Center-site name: (User Defined Site)

*******************************************************************************

Start time : A.D. 2000-Aug-26 00:00:00.0000 UT
Stop time : A.D. 2000-Sep-10 00:00:00.0000 UT
Step-size : 1440 minutes

*******************************************************************************

Center geodetic : 315.783300,-23.016700, 0.25100 {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 315.78330, 5873.620, -2478.517 {E-lon(deg),Dxy(km),Dz(km)}

Center pole/equ : Standard Earth Model {East-longitude +}
Center radii : 6378.1 x 6378.1 x 6356.8 km {Equator, meridian, pole}
Target pole/equ : No model available
Target radii : (unavailable)
Target primary : Sun {source: DE-0406LE-0406}
Interfering body: MOON (Req= 1737.400) km {source: DE-0406LE-0406}
Deflecting body : Sun, EARTH {source: DE-0406LE-0406}
Deflecting GMs : 1.3271E+11, 3.9860E+05 km^3/s^2
Atmos refraction: NO (AIRLESS)
RA format : HMS

Time format : CAL
Units conversion: 1 AU= 149597870.691 km, c= 299792.458 km/s, 1 day= 86400.0 s
Table cut-offs 1: Elevation (-90deg=NO ), Airmass (>38.0000=NO), Daylight (YES)

Table cut-offs 2: Solar Elongation ( 0.0,180.0=NO )
*******************************************************************************

Initial heliocentric osc. elements wrt ecliptic and mean equinox of J2000.0:

EPOCH= 2451600.5 != 2000-Feb-26.0000000 (TDB)
EC= .662553349 QR= .742615274 TP= 2451726.5914632
OM= 82.51404309999999 W= 168.5801874 IN= 3.046092

Asteroid physical parameters:
GM= n.a. RAD= n.a. ROTPER= n.a.
H= 15.6 G= .150 B-V= n.a.

**********************************************************************************************************

Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC Azi_(a-appr)_Elev APmag delta deldot PlAng Cnst

**********************************************************************************************************

2000-Aug-26 00:00 22 51 48.39 -35 41 08.7 118.0576 42.9859 12.50 0.1278219893 16.54716 23.3 PsA

2000-Aug-27 00:00 22 49 20.19 -34 08 15.2 115.9300 44.3108 12.63 0.1376158334 16.81952 21.7 PsA

2000-Aug-28 00:00 22 47 15.00 -32 46 49.4 114.0077 45.5646 12.76 0.1475590685 17.06841 20.3 PsA

2000-Aug-29 00:00 22 45 27.93 -31 34 50.5 112.2549 46.7621 12.89 0.1576397859 17.30062 19.0 PsA

2000-Aug-30 00:00 22 43 55.47 -30 30 43.5 110.6430 47.9147 13.02 0.1678494820 17.52097 17.9 PsA

2000-Aug-31 00:00 22 42 35.02 -29 33 12.5 109.1484 49.0304 13.14 0.1781820914 17.73294 16.9 PsA

2000-Sep-01 00:00 22 41 24.60 -28 41 16.4 107.7517 50.1155 13.26 0.1886333203 17.93909 16.0 PsA

2000-Sep-02 00:00 m 22 40 22.69 -27 54 05.9 106.4370 51.1750 13.38 0.1992001849 18.14130 15.2 PsA

2000-Sep-03 00:00 m 22 39 28.10 -27 11 00.4 105.1908 52.2123 13.50 0.2098806883 18.34102 14.5 PsA

2000-Sep-04 00:00 m 22 38 39.87 -26 31 26.7 104.0016 53.2306 13.62 0.2206735863 18.53935 13.8 PsA

2000-Sep-05 00:00 m 22 37 57.25 -25 54 56.8 102.8596 54.2320 13.74 0.2315782137 18.73714 13.2 PsA

2000-Sep-06 00:00 m 22 37 19.60 -25 21 07.6 101.7563 55.2183 13.85 0.2425943510 18.93504 12.6 PsA

2000-Sep-07 00:00 m 22 36 46.42 -24 49 39.4 100.6840 56.1910 13.97 0.2537221207 19.13355 12.0 Aqr

2000-Sep-08 00:00 m 22 36 17.28 -24 20 15.5 99.6361 57.1513 14.08 0.2649619052 19.33303 11.5 Aqr

2000-Sep-09 00:00 m 22 35 51.82 -23 52 41.8 98.6064 58.1001 14.20 0.2763142837 19.53377 11.1 Aqr

2000-Sep-10 00:00 m 22 35 29.74 -23 26 46.0 97.5892 59.0381 14.31 0.2877799836 19.73598 10.7 Aqr


**********************************************************************************************************

Column meaning:

TIME



Prior to 1972, times are UT1. Dates thereafter are UTC. 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.

The TDB uniform time scale is used internally. Conversion between TDB and the selected non-uniform UT output scale has not been determined for UTC times after the next July or January 1st.  The last known leap-second is used over
any future interval.

NOTE: "n.a." in output means quantity "not available" at the print-time.


SOLAR PRESENCE

Time tag is followed by a blank, then a solar-presence symbol:

        '*'  Daylight (refracted solar upper-limb on or above apparent horizon)
        'C'  Civil twilight/dawn
        'N'  Nautical twilight/dawn
        'A'  Astronomical twilight/dawn
        ' '  Night OR geocentric ephemeris

LUNAR PRESENCE

  The solar-presence symbol is immediately followed by a lunar-presence symbol:
        'm'  Refracted upper-limb of Moon on or above apparent horizon
        ' '  Refracted upper-limb of Moon below apparent horizon OR geocentric ephemeris


 R.A._(ICRF/J2000.0)_DEC =
J2000.0 astrometric right ascension and declination of target. Corrected for light-time. Units: HMS (HH MM SS.ff) and DMS (DD MM SS.f)

Azi_(a-appr)_Elev =

Airless apparent azimuth and elevation of target. Corrected for light-time, the gravitational deflection of light, stellar aberration, precession and nutation. Azimuth measured North(0) -> East(90) -> South(180) -> West(270),
elevation with respect to plane perpendicular to local zenith direction.



TOPOCENTRIC ONLY. Units: DEGREES


 APmag =
 Asteroid's approximate apparent visual magnitude by following definition:
APmag = H + 5*log10(delta) + 5*log10(r) - 2.5*log10((1-G)*phi1 + G*phi2).
Units: none
delta  deldot = Target apparent range ("delta") and range-rate ("delta-dot") relative to observer. Units: AU and KM/S

 PlAng =  Angle between observer and target orbital plane, measured from center of target at the moment light seen at observation time leaves the target.
Positive values indicate observer is above the object's orbital plane, in the direction of reference frame +z axis. Small-bodies only. Units: DEGREES.

Cnst =  Constellation ID; the 3-letter abbreviation for the constellation name of target's astrometric position, as defined by IAU (1930) boundary delineation.

See documentation for list of abbreviations.

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)
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JPL/SSD Home Credits/Awards


Posição de Mithra em 26/08/2000 à Meia Noite, Vista do Horizonte Sul:


 
mithra



Caminho de Mithra no Céu
Identificado por Ascensão Reta e Declinação.
(Observação 00:00 hs, Coordenadas de Angra dos Reis, RJ, )
*** Não Considerar Posicões Relativas a Outros Asteróides ***

 
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