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JPL Small-Body Database Browser
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35035 (1981 ER29)
Classification: Main-belt Asteroid          SPK-ID: 2035035
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1364041245937976 3.627e-08  
a 2.616026881836097 1.1596e-08 au
q 2.259190025105402 9.4995e-08 au
i 13.28022785339133 5.338e-06 deg
node 192.6250914639576 1.5303e-05 deg
peri 308.9806022316221 2.4577e-05 deg
M 130.762178078116 1.8351e-05 deg
tp 2458439.140113596200
(2018-Nov-16.64011360)
7.8484e-05 TDB
period 1545.474097140244
4.23
1.0276e-05
2.813e-08
d
yr
n .232938229547908 1.5488e-09 deg/d
Q 2.972863738566792 1.3178e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1079  
   data-arc span      14023 days (38.39 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53059  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:41:09  

Additional Information
 Earth MOID = 1.29386 au 
 Jupiter MOID = 2.09559 au 
 T_jup = 3.356 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457137.5 (2015-Apr-25.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .137190121488855 3.6005e-08  
q 2.254806618138068 9.4294e-08 au
tp 2456893.465538104011
(2014-Aug-23.96553810)
7.8109e-05 TDB
node 192.7079464854349 1.5297e-05 deg
peri 308.312915859911 2.455e-05 deg
i 13.28733638069779 5.3408e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1079  
   data-arc span      14023 days (38.39 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53059  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:41:09  

Additional Information
 Jupiter MOID = 2.09559 au 
 T_jup = 3.356 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.296369999437848E-15 -3.376022369748315E-15 1.134960290123907E-12 -3.871924795336437E-15 2.669400431867145E-13 1.169875985466907E-15
q -3.376022369748315E-15 8.891420487169784E-15 -3.011473237589145E-12 1.002303953021743E-14 -7.048403605795364E-13 -2.458244375731016E-15
tp 1.134960290123907E-12 -3.011473237589145E-12 6.101054489656635E-9 -1.970762277209352E-11 1.508847436177396E-9 1.130097933944083E-12
node -3.871924795336437E-15 1.002303953021743E-14 -1.970762277209352E-11 2.339970883557905E-10 -2.318670836104166E-10 9.469973602344957E-12
peri 2.669400431867145E-13 -7.048403605795364E-13 1.508847436177396E-9 -2.318670836104166E-10 6.027174188953933E-10 -8.778406301547502E-12
i 1.169875985466907E-15 -2.458244375731016E-15 1.130097933944083E-12 9.469973602344957E-12 -8.778406301547502E-12 2.852448759367519E-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 14.4   n/a MPO436009  
diameter diameter 4.306 km 0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.005 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.166   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35035 (1981 ER29)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 ER29 = 1998 FX122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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