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3440 Stampfer (1950 DD)
Classification: Main-belt Asteroid          SPK-ID: 2003440
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05531677124993439 4.0601e-08  
a 2.80424435011007 1.2994e-08 au
q 2.64912260686611 1.1121e-07 au
i 7.540819775113564 4.3342e-06 deg
node 171.1244991773586 2.8968e-05 deg
peri 145.1775449491711 4.7608e-05 deg
M 181.5939272131481 3.8737e-05 deg
tp 2459850.520382504776
(2022-Sep-28.02038250)
0.00018519 TDB
period 1715.229380489292
4.70
1.1922e-05
3.264e-08
d
yr
n .20988446448912 1.4588e-09 deg/d
Q 2.95936609335403 1.3713e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2317  
   data-arc span      31688 days (86.76 yr)  
   first obs. used      1933-07-24  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46306  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:54:26  

Additional Information
 Earth MOID = 1.64031 au 
 Jupiter MOID = 2.21973 au 
 T_jup = 3.309 
[ 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 12.6   n/a MPO337279  
diameter diameter 10.588 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.173   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3440 Stampfer (1950 DD)          Discovered 1950-Feb-17 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1950 DD = 1933 OH = 1979 HQ4 = 1980 RD3 = 1985 RX3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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