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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2726688099837529 5.2627e-08  
a 3.978253049359631 8.4661e-08 au
q 2.893507524576504 2.4228e-07 au
i 9.586572151148744 5.7903e-06 deg
node 141.5357343150487 4.2996e-05 deg
peri 177.457743993034 4.4895e-05 deg
M 330.2086988926042 1.7862e-05 deg
tp 2459240.341318862072
(2021-Jan-25.84131886)		 0.00014896 TDB
period 2898.257933719826
7.93		 9.2516e-05
2.533e-07		 d
yr
n .1242125470654542 3.965e-09 deg/d
Q 5.062998574142757 1.0775e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61053  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:19:44  

Additional Information
 Earth MOID = 1.88056 au 
 Jupiter MOID = .307707 au 
 T_jup = 2.967 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457291.5 (2015-Sep-26.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2726418493416189 5.2819e-08  
q 2.8843051124402 2.4109e-07 au
tp 2456360.239319699292
(2013-Mar-08.73931970)		 0.0001075 TDB
node 141.6099596572012 4.303e-05 deg
peri 178.0942613531375 4.4932e-05 deg
i 9.59006384391021 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61053  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:19:44  

Additional Information
 Jupiter MOID = .307707 au 
 T_jup = 2.967 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.78981614151277E-15 -1.236932552203062E-14 1.45626130787069E-12 1.068575578131682E-14 9.692487072135093E-14 -9.20696379540231E-16
q -1.236932552203062E-14 5.81261449922383E-14 -5.216511058914079E-12 -5.613064003886771E-14 -1.011248477544829E-13 9.413586480043664E-15
tp 1.45626130787069E-12 -5.216511058914079E-12 1.155522234143992E-8 -3.893030205673714E-12 1.473583164412461E-9 2.339270891111052E-12
node 1.068575578131682E-14 -5.613064003886771E-14 -3.893030205673714E-12 1.851541224101397E-9 -1.826868403670454E-9 6.416092470700651E-11
peri 9.692487072135093E-14 -1.011248477544829E-13 1.473583164412461E-9 -1.826868403670454E-9 2.018865051698552E-9 -6.268164268016922E-11
i -9.20696379540231E-16 9.413586480043664E-15 2.339270891111052E-12 6.416092470700651E-11 -6.268164268016922E-11 3.357355401284473E-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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