Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
1690 Mayrhofer (1948 VB)
Classification: Main-belt Asteroid          SPK-ID: 2001690
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0981107510569052 3.6003e-08  
a 3.038268563185719 1.2863e-08 au
q 2.740181752538984 1.1011e-07 au
i 13.04543020593738 4.251e-06 deg
node 230.4439262581436 1.3618e-05 deg
peri 155.7160828400284 2.3099e-05 deg
M 248.4228698152278 2.0791e-05 deg
tp 2459800.029217810632
(2022-Aug-08.52921781)
0.00011399 TDB
period 1934.361621009712
5.30
1.2284e-05
3.363e-08
d
yr
n .1861079107907883 1.1819e-09 deg/d
Q 3.336355373832454 1.4125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2928  
   data-arc span      32067 days (87.79 yr)  
   first obs. used      1932-11-28  
   last obs. used      2020-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41576  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:16:27  

Additional Information
 Earth MOID = 1.75021 au 
 Jupiter MOID = 2.09877 au 
 T_jup = 3.194 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.16   n/a E2021B10  
diameter diameter 33.810 km 1.378 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 22.194 h n/a LCDB (Rev. 2020-October); 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, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.056   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-03 03:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin