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85571 (1998 BV21)
Classification: Main-belt Asteroid          SPK-ID: 2085571
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3644453221644954 5.4409e-08  
a 3.116277671917872 2.1514e-08 au
q 1.98056485182174 1.7267e-07 au
i 13.11792185046654 5.14e-06 deg
node 296.8742330906323 1.9252e-05 deg
peri 49.59106111626397 1.9537e-05 deg
M 184.8365856975003 4.5793e-06 deg
tp 2460374.172838737881
(2024-Mar-04.67283874)
3.1169e-05 TDB
period 2009.336386523121
5.50
2.0808e-05
5.697e-08
d
yr
n .1791636295518095 1.8553e-09 deg/d
Q 4.251990492014005 2.9354e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1426  
   data-arc span      17069 days (46.73 yr)  
   first obs. used      1974-08-21  
   last obs. used      2021-05-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45222  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:26:31  

Additional Information
 Earth MOID = .99913 au 
 Jupiter MOID = 1.40014 au 
 T_jup = 3.073 
[ 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 13.63   n/a E2021B10  
diameter diameter 9.027 km 1.903 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85571 (1998 BV21)          Discovered 1998-Jan-23 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 BV21 = 1974 QU = 2003 CC4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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