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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 
[ show covariance matrix ]

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2051-Sep-03 19:40 00:02 Amphi 0.0235422374891491 0.0235391453594824 0.0235453300936802 2.67173771376491 2.67173762236801 2470418.319499216 1.57358879899071 229.789504378943 32.9677647195859 48.5705766695297 80641.0823727055 T 32 CATAB v2.0f-lin.ifort 2020-Jun-23 15:32:36 2020-Jun-23 15:32
2170-Oct-27 15:48 00:02 Hebe 0.0478094323477743 0.0478067874345286 0.0478120807625606 5.34958407261276 5.34958404830618 2513936.158458121 1.82580340295672 679.246561774 33.1197160335564 79.1486394760201 212020.25087405 T 32 CATAB v2.0f-lin.ifort 2020-Jun-23 15:32:36 2020-Jun-23 15:32

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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