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3884 Alferov (1977 EM1)
Classification: Main-belt Asteroid          SPK-ID: 2003884
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379663533009687 3.9127e-08  
a 3.112707778952621 1.663e-08 au
q 2.68325883779897 1.2463e-07 au
i 1.160892310595705 4.2165e-06 deg
node 9.486155547956599 0.00020418 deg
peri 112.9641231681138 0.00020478 deg
M 357.8908822176318 1.4834e-05 deg
tp 2459012.251797137913
(2020-Jun-11.75179714)
8.2673e-05 TDB
period 2005.88464286644
5.49
1.6075e-05
4.401e-08
d
yr
n .1794719358764093 1.4382e-09 deg/d
Q 3.542156720106271 1.8924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2091  
   data-arc span      18625 days (50.99 yr)  
   first obs. used      1969-11-05  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49559  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:14:42  

Additional Information
 Earth MOID = 1.69927 au 
 Jupiter MOID = 1.52973 au 
 T_jup = 3.203 
[ 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 13.1   n/a MPO324342  
diameter diameter 13.386 km 0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3884 Alferov (1977 EM1)          Discovered 1977-Mar-13 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1977 EM1 = 1969 VL3 = 1971 DY = 1979 QD4 = 1980 TJ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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