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4129 Richelen (1988 DM)
Classification: Main-belt Asteroid          SPK-ID: 2004129
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2501186756880761 2.4381e-08  
a 2.565939503233543 8.5121e-09 au
q 1.92415011278905 6.3762e-08 au
i 7.123533523553317 1.0107e-06 deg
node 245.2642261659568 6.6546e-06 deg
peri 71.08876011584232 7.6333e-06 deg
M 207.3234290676228 3.7919e-06 deg
tp 2459837.204534241299
(2022-Sep-14.70453424)
1.8158e-05 TDB
period 1501.301941267661
4.11
7.4705e-06
2.045e-08
d
yr
n .2397918700458252 1.1932e-09 deg/d
Q 3.207728893678037 1.0641e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2525  
   data-arc span      17339 days (47.47 yr)  
   first obs. used      1973-10-02  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:25:44  

Additional Information
 Earth MOID = .922949 au 
 Jupiter MOID = 2.14713 au 
 T_jup = 3.377 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.45   n/a MPCxxxxx  
diameter diameter 5.391 km 0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.228   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4129 Richelen (1988 DM)          Discovered 1988-Feb-22 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1988 DM = 1973 TW = 1977 RE4 = 1986 VZ7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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