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2654 Ristenpart (1968 OG)
Classification: Main-belt Asteroid          SPK-ID: 2002654
[ 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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09246526321670029 3.4314e-08  
a 3.048877941372526 1.4754e-08 au
q 2.766962640007924 1.0726e-07 au
i 7.434168098294442 4.614e-06 deg
node 206.4201914897427 2.2814e-05 deg
peri 39.79306194836013 3.1494e-05 deg
M 322.4063920349 2.1237e-05 deg
tp 2459203.557947280741
(2020-Dec-20.05794728)		 0.00011467 TDB
period 1944.502402880033
5.32		 1.4114e-05
3.864e-08		 d
yr
n .1851373387180177 1.3438e-09 deg/d
Q 3.330793242737128 1.6118e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2214  
   data-arc span      19013 days (52.05 yr)  
   first obs. used      1968-07-18  
   last obs. used      2020-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48568  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:07:18  

Additional Information
 Earth MOID = 1.75911 au 
 Jupiter MOID = 1.68318 au 
 T_jup = 3.218 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457015.5 (2014-Dec-24.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09176250346225022 3.4535e-08  
q 2.769565111382885 1.0785e-07 au
tp 2457253.112379465729
(2015-Aug-18.61237947)		 0.00011597 TDB
node 206.4485218476642 2.2814e-05 deg
peri 38.93084340015764 3.1513e-05 deg
i 7.433339986378988 4.6138e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2214  
   data-arc span      19013 days (52.05 yr)  
   first obs. used      1968-07-18  
   last obs. used      2020-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48568  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:07:18  

Additional Information
 Jupiter MOID = 1.68318 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.192687348613617E-15 -3.696631142125411E-15 -1.653171177614098E-12 5.068425346430401E-16 -3.002969568646626E-13 1.011128644665338E-16
q -3.696631142125411E-15 1.1632108395484E-14 4.830770191856213E-12 -2.50099079213379E-15 8.707185163234003E-13 9.59388702027031E-16
tp -1.653171177614098E-12 4.830770191856213E-12 1.344857635369449E-8 -5.875928090732755E-12 2.527923176463261E-9 -2.61257285576569E-12
node 5.068425346430401E-16 -2.50099079213379E-15 -5.875928090732755E-12 5.204627135754339E-10 -5.169595124158815E-10 -7.141713927054361E-12
peri -3.002969568646626E-13 8.707185163234003E-13 2.527923176463261E-9 -5.169595124158815E-10 9.930669968212699E-10 6.674692161043522E-12
i 1.011128644665338E-16 9.59388702027031E-16 -2.61257285576569E-12 -7.141713927054361E-12 6.674692161043522E-12 2.128747656949729E-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 12.8   n/a MPO435722  
diameter diameter 16.101 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2654 Ristenpart (1968 OG)          Discovered 1968-Jul-18 by Torres, C. at Cerro El Roble
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1968 OG = 1978 JA1 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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