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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 ]

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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 .1751016462064705 1.3308e-08  
a 2.2353487095861 4.7304e-09 au
q 1.843935470692064 2.9567e-08 au
i 4.949563555826038 7.302e-07 deg
node 178.8715270160659 8.0597e-06 deg
peri 254.0240801254677 8.785e-06 deg
M 134.62232565532 4.4723e-06 deg
tp 2458744.010347452491
(2019-Sep-17.51034745)
1.4928e-05 TDB
period 1220.720813707093
3.34
3.8749e-06
1.061e-08
d
yr
n .2949077266133849 9.3611e-10 deg/d
Q 2.626761948480135 5.5587e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2700  
   data-arc span      31187 days (85.39 yr)  
   first obs. used      1935-10-18  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45464  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:30:35  

Additional Information
 Earth MOID = .865293 au 
 Jupiter MOID = 2.65393 au 
 T_jup = 3.614 
[ 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 13.50   n/a E2021B10  
diameter diameter 4.668 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.397 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V. (2020) Minor Planet Bull. 47, 231-241.]
[Bonamico, R. (2020) Minor Planet Bull. 47, 222-223.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2020) http://www.asu.cas.cz/~ppravec/neo.htm]
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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