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1517 Beograd (1938 FD)
Classification: Main-belt Asteroid          SPK-ID: 2001517
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04516874005686572 3.3848e-08  
a 2.717231357428919 1.0263e-08 au
q 2.594497440570848 9.5854e-08 au
i 5.272987087443053 4.1482e-06 deg
node 63.86242536871337 4.2181e-05 deg
peri 229.878335766777 6.7056e-05 deg
M 21.14504137486039 5.297e-05 deg
tp 2458904.406415885063
(2020-Feb-24.90641589)
0.00024068 TDB
period 1636.019039551571
4.48
9.2692e-06
2.538e-08
d
yr
n .2200463388853195 1.2467e-09 deg/d
Q 2.83996527428699 1.0727e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2734  
   data-arc span      32354 days (88.58 yr)  
   first obs. used      1931-11-17  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43307  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:32:23  

Additional Information
 Earth MOID = 1.5821 au 
 Jupiter MOID = 2.23285 au 
 T_jup = 3.353 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456291.5 (2012-Dec-30.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04304599723371735 3.3633e-08  
q 2.602524247876707 9.4839e-08 au
tp 2455641.265975085466
(2011-Mar-20.76597509)
0.00025507 TDB
node 63.93153593555002 4.2058e-05 deg
peri 231.9435034889234 6.9326e-05 deg
i 5.280021399176196 4.1542e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2734  
   data-arc span      32354 days (88.58 yr)  
   first obs. used      1931-11-17  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43307  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:32:23  

Additional Information
 Jupiter MOID = 2.23285 au 
 T_jup = 3.353 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.131159640527254E-15 -3.175111907948105E-15 -3.027615258409649E-13 -2.649578311501569E-15 -5.120767724668876E-14 5.726976504050212E-16
q -3.175111907948105E-15 8.994468593675323E-15 6.53708547483429E-13 7.760738481697163E-15 1.054589190011829E-13 -1.649749390281536E-15
tp -3.027615258409649E-13 6.53708547483429E-13 6.505816767214813E-8 1.842405754583402E-12 1.407327148451399E-8 2.998668865468284E-13
node -2.649578311501569E-15 7.760738481697163E-15 1.842405754583402E-12 1.768881760448603E-9 -1.76079129409849E-9 -3.815262446796373E-11
peri -5.120767724668876E-14 1.054589190011829E-13 1.407327148451399E-8 -1.76079129409849E-9 4.806124113078443E-9 3.806086601747901E-11
i 5.726976504050212E-16 -1.649749390281536E-15 2.998668865468284E-13 -3.815262446796373E-11 3.806086601747901E-11 1.725742952063827E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.2   n/a MPO492768  
diameter diameter 39.524 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.943 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Benishek, V.; Pilcher, F. (2014) Minor Planet Bull. 41, 263-264.]
[Polakis, T. (2019) Minor Planet Bull. 46-4, in press.]
geometric albedo albedo 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1517 Beograd (1938 FD)          Discovered 1938-Mar-20 by Protitch, M. B. at Belgrade
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1938 FD = 1931 VF = 1934 JF = 1935 ST = 1942 CD = 1952 JG = 1952 KM1 = 1971 VT = 1978 EW6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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