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66551 (1999 RC128)
Classification: Main-belt Asteroid          SPK-ID: 2066551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1188248930923754 4.0311e-08  
a 2.723133576024424 1.5263e-08 au
q 2.399557519977064 1.1151e-07 au
i 17.86570291323899 4.2887e-06 deg
node 154.2127083325106 1.4138e-05 deg
peri 137.8989797555483 2.3291e-05 deg
M 339.2247999495954 1.7518e-05 deg
tp 2459491.220625661422
(2021-Oct-03.72062566)
7.9826e-05 TDB
period 1641.352437299297
4.49
1.3799e-05
3.778e-08
d
yr
n .2193313220360819 1.844e-09 deg/d
Q 3.046709632071784 1.7076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      711  
   data-arc span      8495 days (23.26 yr)  
   first obs. used      1998-04-03  
   last obs. used      2021-07-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5615  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:32:30  

Additional Information
 Earth MOID = 1.41012 au 
 Jupiter MOID = 2.34431 au 
 T_jup = 3.278 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457703.5 (2016-Nov-11.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179931512830954 4.0305e-08  
q 2.402141046274192 1.1137e-07 au
tp 2457847.352001609520
(2017-Apr-03.85200161)
8.2275e-05 TDB
node 154.233884871297 1.414e-05 deg
peri 137.4776575529767 2.3403e-05 deg
i 17.86249312552566 4.288e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      711  
   data-arc span      8495 days (23.26 yr)  
   first obs. used      1998-04-03  
   last obs. used      2021-07-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5615  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:32:30  

Additional Information
 Jupiter MOID = 2.34431 au 
 T_jup = 3.278 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.624524192653629E-15 -4.455643898467094E-15 7.412455715611878E-14 8.036139299455488E-16 5.840421001559608E-14 -6.170351824083187E-15
q -4.455643898467094E-15 1.240218276151723E-14 -4.349853621916293E-13 -3.10075803492895E-15 -2.143199762649718E-13 1.696148137521758E-14
tp 7.412455715611878E-14 -4.349853621916293E-13 6.769102778889944E-9 8.239452287136798E-12 1.553838055161888E-9 8.657316546745858E-12
node 8.036139299455488E-16 -3.10075803492895E-15 8.239452287136798E-12 1.999406881680141E-10 -1.880649085138421E-10 -3.086398785446791E-12
peri 5.840421001559608E-14 -2.143199762649718E-13 1.553838055161888E-9 -1.880649085138421E-10 5.477213542781585E-10 4.783103826585276E-12
i -6.170351824083187E-15 1.696148137521758E-14 8.657316546745858E-12 -3.086398785446791E-12 4.783103826585276E-12 1.838728613542664E-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 15.25   n/a MPCxxxxx  
diameter diameter 3.920 km 0.998 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.126   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66551 (1999 RC128)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RC128 = 2002 EX92 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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