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277251 (2005 RW44)
Classification: Outer Main-belt Asteroid          SPK-ID: 2277251
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2728105159424558 5.2498e-08  
a 3.980711761646103 9.0447e-08 au
q 2.894731732133228 2.4284e-07 au
i 9.593648245048112 5.7956e-06 deg
node 141.5075896279066 4.2927e-05 deg
peri 177.2516952269646 4.4793e-05 deg
M 355.1826766793982 1.8324e-05 deg
tp 2459239.318863787151
(2021-Jan-24.81886379)
0.00014859 TDB
period 2900.945199922412
7.94
9.887e-05
2.707e-07
d
yr
n .1240974838165259 4.2295e-09 deg/d
Q 5.06669179115898 1.1512e-07 au
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      6305 days (17.26 yr)  
   first obs. used      2003-04-08  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61051  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 04:00:09  

Additional Information
 Earth MOID = 1.87978 au 
 Jupiter MOID = .304543 au 
 T_jup = 2.967 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457291.5 (2015-Sep-26.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2726418494258745 5.2819e-08  
q 2.88430511212599 2.4109e-07 au
tp 2456360.239319598949
(2013-Mar-08.73931960)
0.0001075 TDB
node 141.6099595851723 4.303e-05 deg
peri 178.0942613955245 4.4932e-05 deg
i 9.590063843026817 5.7943e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      6305 days (17.26 yr)  
   first obs. used      2003-04-08  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61051  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 04:00:09  

Additional Information
 Jupiter MOID = .304543 au 
 T_jup = 2.967 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.789815895714188E-15 -1.236932373847708E-14 1.456260786919421E-12 1.068577744254742E-14 9.692485558911598E-14 -9.20690963260557E-16
q -1.236932373847708E-14 5.812613310008341E-14 -5.216507359204611E-12 -5.613080457752631E-14 -1.011246637790142E-13 9.413543097183464E-15
tp 1.456260786919421E-12 -5.216507359204611E-12 1.155522183650299E-8 -3.89300393199762E-12 1.47358319994159E-9 2.339277497071157E-12
node 1.068577744254742E-14 -5.613080457752631E-14 -3.89300393199762E-12 1.851541230157231E-9 -1.826868411649939E-9 6.416092386244578E-11
peri 9.692485558911598E-14 -1.011246637790142E-13 1.47358319994159E-9 -1.826868411649939E-9 2.018865070207949E-9 -6.268164257392213E-11
i -9.20690963260557E-16 9.413543097183464E-15 2.339277497071157E-12 6.416092386244578E-11 -6.268164257392213E-11 3.357355396321544E-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 14.71   n/a E2021B55  

277251 (2005 RW44)          Discovered 2005-Sep-03 by CSS at Catalina
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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