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5891 Gehrig (1981 SM)
Classification: Main-belt Asteroid          SPK-ID: 2005891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .132180775643083 2.9113e-08  
a 2.434341017436434 7.3922e-09 au
q 2.112567933571914 7.2475e-08 au
i 3.346087911537021 3.329e-06 deg
node 300.3283745283337 6.2997e-05 deg
peri 111.4231621217522 6.4898e-05 deg
M 30.76117092790269 1.4852e-05 deg
tp 2458881.958364670398
(2020-Feb-02.45836467)
5.7234e-05 TDB
period 1387.300529575978
3.80
6.3191e-06
1.73e-08
d
yr
n .2594967653548235 1.182e-09 deg/d
Q 2.756114101300954 8.3694e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2256  
   data-arc span      24875 days (68.10 yr)  
   first obs. used      1951-12-27  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44827  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:49:29  

Additional Information
 Earth MOID = 1.12621 au 
 Jupiter MOID = 2.5801 au 
 T_jup = 3.491 
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Orbital Elements at Epoch 2456955.5 (2014-Oct-25.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1318812686171085 2.9219e-08  
q 2.113335230380833 7.2719e-08 au
tp 2457491.242088013591
(2016-Apr-12.74208801)
5.7776e-05 TDB
node 300.5209570293068 6.3036e-05 deg
peri 110.4981977794591 6.494e-05 deg
i 3.344366571093978 3.3306e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2256  
   data-arc span      24875 days (68.10 yr)  
   first obs. used      1951-12-27  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44827  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:49:29  

Additional Information
 Jupiter MOID = 2.5801 au 
 T_jup = 3.491 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.537312635831548E-16 -2.116890529469428E-15 -5.404658938340191E-13 3.502498498726191E-15 -1.409037132296401E-13 -6.797105971324784E-16
q -2.116890529469428E-15 5.288109619774861E-15 1.284353458585837E-12 -7.782960910324365E-15 3.295906978413579E-13 1.779886537503466E-15
tp -5.404658938340191E-13 1.284353458585837E-12 3.338054696533485E-9 1.954726261648582E-12 9.157476792235407E-10 1.846052854859295E-12
node 3.502498498726191E-15 -7.782960910324365E-15 1.954726261648582E-12 3.973513663463889E-9 -3.966046472043169E-9 6.416479862536523E-11
peri -1.409037132296401E-13 3.295906978413579E-13 9.157476792235407E-10 -3.966046472043169E-9 4.217253991633759E-9 -6.359248627602524E-11
i -6.797105971324784E-16 1.779886537503466E-15 1.846052854859295E-12 6.416479862536523E-11 -6.359248627602524E-11 1.109274316723336E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO347571  
diameter diameter 5.514 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.57 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.359   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5891 Gehrig           Discovered 1981 Sept. 22 by A. Mrkos at Klet.
Named in memory of Henry Louis (Lou) Gehrig (1903-1941), professional U.S. baseball player. From 1925 to 1939 Gehrig appeared in 2130 consecutive games for the New York Yankees, a reliability record that remained unbroken until 1995. Gehrig was a consistent left-handed batsman, with a career average of 0.340, but his career was ended prematurely as a result of amyothrophic lateral sclerosis ("Lou Gehrig's Disease"). Name suggested by G. V. Williams, who made the identifications involving this object, and T. B. Spahr.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19960828/MPCPages.arcLast Updated: 2003-09-26

Alternate Designations
 1981 SM = 1976 JT4 = 1990 BH3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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