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66630 (1999 RS208)
Classification: Main-belt Asteroid          SPK-ID: 2066630
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2251646551340999 5.5161e-08  
a 2.640648477341748 1.356e-08 au
q 2.046067773610707 1.5038e-07 au
i 7.243077642455404 4.8955e-06 deg
node 231.4664049372854 4.468e-05 deg
peri 95.08741572504809 4.5752e-05 deg
M 51.54188820118021 1.0167e-05 deg
tp 2459172.100368987779
(2020-Nov-18.60036899)
4.3703e-05 TDB
period 1567.343960102525
4.29
1.2073e-05
3.305e-08
d
yr
n .2296879365116839 1.7693e-09 deg/d
Q 3.235229181072788 1.6614e-08 au
  Orbit Determination Parameters
   # obs. used (total)      632  
   data-arc span      9018 days (24.69 yr)  
   first obs. used      1995-11-14  
   last obs. used      2020-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55164  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:23:51  

Additional Information
 Earth MOID = 1.04951 au 
 Jupiter MOID = 2.18389 au 
 T_jup = 3.348 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456918.5 (2014-Sep-18.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2242652188288627 5.504e-08  
q 2.04955725368986 1.5004e-07 au
tp 2457606.126654206852
(2016-Aug-05.62665421)
4.2017e-05 TDB
node 231.5324942179632 4.4661e-05 deg
peri 95.3330965785579 4.5741e-05 deg
i 7.242625197212009 4.8944e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      632  
   data-arc span      9018 days (24.69 yr)  
   first obs. used      1995-11-14  
   last obs. used      2020-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55164  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:23:51  

Additional Information
 Jupiter MOID = 2.18389 au 
 T_jup = 3.348 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.029402971752461E-15 -8.241435361229705E-15 6.879457850863323E-13 3.306157610534647E-14 1.606156582762653E-13 -1.072988152136822E-14
q -8.241435361229705E-15 2.251257098144875E-14 -1.816239143997861E-12 -9.467532750994748E-14 -4.322856459863161E-13 2.993195333520495E-14
tp 6.879457850863323E-13 -1.816239143997861E-12 1.765399671575283E-9 4.341688893885553E-12 4.50242845670647E-10 -2.713324257215545E-12
node 3.306157610534647E-14 -9.467532750994748E-14 4.341688893885553E-12 1.994599814129063E-9 -1.977477792483855E-9 -7.823679276608569E-11
peri 1.606156582762653E-13 -4.322856459863161E-13 4.50242845670647E-10 -1.977477792483855E-9 2.092229507911801E-9 7.692489915543883E-11
i -1.072988152136822E-14 2.993195333520495E-14 -2.713324257215545E-12 -7.823679276608569E-11 7.692489915543883E-11 2.395550611917302E-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 15.54   n/a E2021B10  

66630 (1999 RS208)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 RS208 = 1995 VD9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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