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249969 (2001 UC170)
Classification: Main-belt Asteroid          SPK-ID: 2249969
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09164166958694678 5.1083e-08  
a 2.74455552943587 2.2045e-08 au
q 2.49303987844428 1.3973e-07 au
i 5.732875206039849 5.9619e-06 deg
node 12.89392340017255 4.9094e-05 deg
peri 8.347804312861232 6.0078e-05 deg
M 44.68197311602025 3.1189e-05 deg
tp 2458794.372326195048
(2019-Nov-06.87232619)
0.00014455 TDB
period 1660.758408701004
4.55
2.0009e-05
5.478e-08
d
yr
n .2167684342971843 2.6117e-09 deg/d
Q 2.99607118042746 2.4065e-08 au
  Orbit Determination Parameters
   # obs. used (total)      284  
   data-arc span      6944 days (19.01 yr)  
   first obs. used      2001-10-11  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57401  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:14:00  

Additional Information
 Earth MOID = 1.49566 au 
 Jupiter MOID = 2.44673 au 
 T_jup = 3.335 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457206.5 (2015-Jul-03.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09201964080965584 5.1919e-08  
q 2.491429877591528 1.419e-07 au
tp 2457124.633950997162
(2015-Apr-12.13395100)
0.00014899 TDB
node 12.95994678043151 4.8971e-05 deg
peri 6.482010402930071 5.9763e-05 deg
i 5.743095555247067 5.9699e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      284  
   data-arc span      6944 days (19.01 yr)  
   first obs. used      2001-10-11  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57401  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:14:00  

Additional Information
 Jupiter MOID = 2.44673 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.695633371348662E-15 -7.296044954180239E-15 -2.352681976763653E-12 -2.644144041246904E-15 -5.455187169425491E-13 -3.167059708820656E-15
q -7.296044954180239E-15 2.013560625126074E-14 5.358570123475796E-12 2.282998002233181E-15 1.251165280464668E-12 9.332206080574081E-15
tp -2.352681976763653E-12 5.358570123475796E-12 2.219776688781175E-8 3.695403475429813E-11 5.128446982040638E-9 6.980878920763563E-13
node -2.644144041246904E-15 2.282998002233181E-15 3.695403475429813E-11 2.398135552134825E-9 -2.376799553692279E-9 -6.028766136892396E-11
peri -5.455187169425491E-13 1.251165280464668E-12 5.128446982040638E-9 -2.376799553692279E-9 3.571667500007052E-9 6.014624918253866E-11
i -3.167059708820656E-15 9.332206080574081E-15 6.980878920763563E-13 -6.028766136892396E-11 6.014624918253866E-11 3.563997082002873E-11

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 16.3   n/a MPO494363  
diameter diameter 3.250 km 0.345 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249969 (2001 UC170)          Discovered 2001-Oct-21 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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