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2227 Otto Struve (1955 RX)
Classification: Main-belt Asteroid          SPK-ID: 2002227
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1750702951527519 2.8332e-08  
a 2.235667116696471 5.1206e-09 au
q 1.844268214713118 6.1941e-08 au
i 4.949202905689337 3.5016e-06 deg
node 178.8710695810631 3.3416e-05 deg
peri 254.0736608692505 3.5135e-05 deg
M 75.59364882919056 1.0225e-05 deg
tp 2458744.115395172694
(2019-Sep-17.61539517)
3.459e-05 TDB
period 1220.98164551344
3.34
4.1948e-06
1.148e-08
d
yr
n .294844727046339 1.013e-09 deg/d
Q 2.627066018679824 6.0171e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2656  
   data-arc span      30920 days (84.65 yr)  
   first obs. used      1935-10-18  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45426  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:42:24  

Additional Information
 Earth MOID = .866142 au 
 Jupiter MOID = 2.65318 au 
 T_jup = 3.613 
[ 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 13.4   n/a MPO452192  
diameter diameter 4.668 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.388   0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2227 Otto Struve (1955 RX)          Discovered 1955-Sep-13 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
 1955 RX = 1935 UP = 1955 SA2 = 1962 WL2 = 1965 SV = 1970 ET2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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