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1690 Mayrhofer (1948 VB)
Classification: Main-belt Asteroid          SPK-ID: 2001690
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09830205797903002 3.7265e-08  
a 3.037081864403304 1.3649e-08 au
q 2.73853046688167 1.1282e-07 au
i 13.04896140557579 4.2722e-06 deg
node 230.4502868679664 1.6401e-05 deg
peri 155.9343603442249 2.5792e-05 deg
M 210.9496593784094 2.1191e-05 deg
tp 2459800.912102426404
0.00011638 TDB
period 1933.22843592191
n .1862170001799734 1.2553e-09 deg/d
Q 3.335633261924938 1.499e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2485  
   data-arc span      31840 days (87.17 yr)  
   first obs. used      1932-11-28  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:01:58  

Additional Information
 Earth MOID = 1.74966 au 
 Jupiter MOID = 2.09789 au 
 T_jup = 3.195 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.1   n/a MPO344310  
diameter diameter 33.810 km 1.378 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 22.194 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. (2006) Observatoire de Geneve web site,]
geometric albedo albedo 0.056   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

1690 Mayrhofer           Discovered 1948 Nov. 8 by M. Laugier at Nice.
Named in honor of Karl Mayrhofer, Austrian astronomer, currently living at Ried im Innkreis, well known for his orbit computations on minor planets. Name proposed by O. Kippes, who found some of the identifications involving this planet.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5523Last Updated: 2006-03-21

Alternate Designations
 1948 VB = 1932 WN = 1953 VC2 = 1956 GN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Apr-07 20:43 UT
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