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1841 Masaryk (1971 UO1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001841
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1019422850203659 2.9417e-08  
a 3.433353390157919 1.4929e-08 au
q 3.083349500282801 9.8703e-08 au
i 2.60995018583177 3.1427e-06 deg
node 45.14421012647601 7.2851e-05 deg
peri 122.150340542127 7.4491e-05 deg
M 106.9106107810467 1.6147e-05 deg
tp 2458310.427854959655
(2018-Jul-10.92785496)
0.00010339 TDB
period 2323.679290573893
6.36
1.5156e-05
4.149e-08
d
yr
n .1549267153433591 1.0105e-09 deg/d
Q 3.783357280033037 1.6451e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3101  
   data-arc span      30918 days (84.65 yr)  
   first obs. used      1936-03-23  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46445  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:02:59  

Additional Information
 Earth MOID = 2.09113 au 
 Jupiter MOID = 1.18715 au 
 T_jup = 3.130 
[ 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 10.9   n/a MPO492772  
diameter diameter 40.240 km 0.504 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.53 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]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.052   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1841 Masaryk (1971 UO1)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1971 UO1 = 1936 FW = 1955 DE = 1959 VJ = 1968 FG = 1970 QN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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