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3681 Boyan (1974 QO2)
Classification: Main-belt Asteroid          SPK-ID: 2003681
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1840754840172392 4.4336e-08  
a 2.229753321931312 7.6958e-09 au
q 1.819310399957759 9.9155e-08 au
i 4.064832966960005 4.7668e-06 deg
node 132.9827257503138 5.3011e-05 deg
peri 172.5685373923065 5.4233e-05 deg
M 174.8070120040347 1.3461e-05 deg
tp 2458009.972665779262
(2017-Sep-13.47266578)
4.4719e-05 TDB
period 1216.14023306204
3.33
6.2961e-06
1.724e-08
d
yr
n .2960184937666107 1.5325e-09 deg/d
Q 2.640196243904865 9.1124e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2102  
   data-arc span      26474 days (72.48 yr)  
   first obs. used      1947-06-14  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47832  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:34:13  

Additional Information
 Earth MOID = .80359 au 
 Jupiter MOID = 2.5968 au 
 T_jup = 3.617 
[ 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 13.4   n/a MPO347551  
diameter diameter 4.575 km 0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.324   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3681 Boyan (1974 QO2)          Discovered 1974-Aug-27 by Chernykh, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1974 QO2 = 1937 KA = 1947 LG = 1980 GM1 = 1984 SN2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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