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2842 Unsold (1950 OD)
Classification: Main-belt Asteroid          SPK-ID: 2002842
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1008150520114238 3.6174e-08  
a 2.616914090761542 1.1234e-08 au
q 2.353089760591989 9.7551e-08 au
i 11.70064162694063 5.2662e-07 deg
node 310.0404817925431 3.1374e-06 deg
peri 203.0280698948916 6.6774e-06 deg
M 28.62154751984473 4.4315e-06 deg
tp 2459077.565653695709
(2020-Aug-16.06565370)
1.8937e-05 TDB
period 1546.260370403086
4.23
9.9569e-06
2.726e-08
d
yr
n .2328197804785966 1.4992e-09 deg/d
Q 2.880738420931095 1.2367e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2380  
   data-arc span      32965 days (90.25 yr)  
   first obs. used      1930-12-20  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41906  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:34:00  

Additional Information
 Earth MOID = 1.36878 au 
 Jupiter MOID = 2.15849 au 
 T_jup = 3.370 
[ 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 11.56   n/a E2020-QM5  
diameter diameter 13.716 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 49.50 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2012) Minor Planet Bull. 39, 181-183.]
geometric albedo albedo 0.149   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2842 Unsold (1950 OD)          Discovered 1950-Jul-25 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1950 OD = 1930 YT = 1933 QX = 1944 BC = 1978 EG4 = 1982 BJ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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