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JPL Small-Body Database Browser
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722 Frieda (A911 UN)
Classification: Main-belt Asteroid          SPK-ID: 2000722
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1449329274403013 3.4519e-08  
a 2.171861596938397 5.3329e-09 au
q 1.857087337698947 7.6559e-08 au
i 5.63837517404138 4.2202e-06 deg
node 45.68187294110238 3.3002e-05 deg
peri 257.3563525722217 3.6489e-05 deg
M 284.5629350203151 1.7145e-05 deg
tp 2458845.479039944148
(2019-Dec-27.97903994)
5.5932e-05 TDB
period 1169.086501491585
3.20
4.3059e-06
1.179e-08
d
yr
n .3079327317017964 1.1342e-09 deg/d
Q 2.486635856177846 6.1058e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2437  
   data-arc span      40002 days (109.52 yr)  
   first obs. used      1910-03-09  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41849  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:56:23  

Additional Information
 Earth MOID = .851087 au 
 Jupiter MOID = 2.72304 au 
 T_jup = 3.668 
[ 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 12.3   n/a MPO435701  
diameter diameter 8.257 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.252   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

722 Frieda (A911 UN)          Discovered 1911-Oct-18 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A911 UN = 1926 GR = 1946 SH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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