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90641 (4570 T-2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2090641
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1131993104978185 4.8016e-08  
a 3.225185061646849 3.392e-08 au
q 2.860096336440561 1.6655e-07 au
i 5.045445928824773 5.6607e-06 deg
node 26.74095245959334 6.636e-05 deg
peri 54.95638127790821 7.2912e-05 deg
M 299.5465160386445 2.9592e-05 deg
tp 2459355.762379210734
(2021-May-21.26237921)
0.00017551 TDB
period 2115.58454757744
5.79
3.3375e-05
9.138e-08
d
yr
n .1701657352395756 2.6845e-09 deg/d
Q 3.590273786853137 3.7759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      424  
   data-arc span      16834 days (46.09 yr)  
   first obs. used      1973-09-24  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57265  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:15:36  

Additional Information
 Earth MOID = 1.87969 au 
 Jupiter MOID = 1.66033 au 
 T_jup = 3.172 
[ 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 14.9   n/a MPO493507  
diameter diameter 6.109 km 0.383 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90641 (4570 T-2)          Discovered 1973-Sep-30 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 4570 T-2 = 2002 RN188 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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