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4125 Lew Allen (1987 MO)
Classification: Inner Main-belt Asteroid          SPK-ID: 2004125
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179974943907645 7.5754e-09  
a 1.921591898004616 4.3928e-09 au
q 1.694848868798478 1.6095e-08 au
i 20.44362784130861 4.8677e-07 deg
node 276.0423820471527 1.7746e-06 deg
peri 33.92536991388126 9.0701e-06 deg
M 197.5991391131542 9.7326e-06 deg
tp 2459639.410521316506
(2022-Feb-28.91052132)
2.6525e-05 TDB
period 972.9491999678219
2.66
3.3362e-06
9.134e-09
d
yr
n .3700090405664614 1.2688e-09 deg/d
Q 2.148334927210754 4.9111e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2946  
   data-arc span      15187 days (41.58 yr)  
   first obs. used      1979-08-23  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .31731  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:25:37  

Additional Information
 Earth MOID = .696173 au 
 Jupiter MOID = 3.05344 au 
 T_jup = 3.839 
[ 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 13.63   n/a MPCxxxxx  
diameter diameter 6.392 km 0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.6283 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 32-37.]
[Warner, B.D. (2010) Minor Planet Bull. 37, 57-64.]
[Warner, B.D (2012) Minor Planet Bull. 39, 16-21.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 108-114.]
[Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 50-60.]
geometric albedo albedo 0.172   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4125 Lew Allen (1987 MO)          Discovered 1987-Jun-28 by Helin, E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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