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351241 (2004 RA18)
Classification: Main-belt Asteroid          SPK-ID: 2351241
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1868272007108631 5.0819e-08  
a 2.389398791508462 1.0728e-08 au
q 1.942994103909017 1.2309e-07 au
i 1.107481340808232 5.9602e-06 deg
node 182.049453910136 0.00022935 deg
peri 218.9226143579734 0.00023002 deg
M 52.39331458622255 1.3769e-05 deg
tp 2458804.161820411967
(2019-Nov-16.66182041)
5.1667e-05 TDB
period 1349.060375544141
3.69
9.0854e-06
2.487e-08
d
yr
n .2668524007717553 1.7971e-09 deg/d
Q 2.835803479107907 1.2732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      295  
   data-arc span      6521 days (17.85 yr)  
   first obs. used      2002-02-11  
   last obs. used      2019-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55172  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:44:14  

Additional Information
 Earth MOID = .951365 au 
 Jupiter MOID = 2.57058 au 
 T_jup = 3.509 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457459.5 (2016-Mar-12.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1865918979794018 5.0866e-08  
q 1.943442729845294 1.2313e-07 au
tp 2457452.162477770521
(2016-Mar-04.66247777)
5.3034e-05 TDB
node 182.032337925331 0.00022949 deg
peri 218.3204537957457 0.00023016 deg
i 1.10599450810015 5.9654e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      295  
   data-arc span      6521 days (17.85 yr)  
   first obs. used      2002-02-11  
   last obs. used      2019-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55172  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:44:14  

Additional Information
 Jupiter MOID = 2.57058 au 
 T_jup = 3.509 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.587376991964394E-15 -6.247828112978868E-15 -3.294090964850191E-13 3.265511889419417E-14 -1.111211874466086E-13 -1.454680905661081E-15
q -6.247828112978868E-15 1.515990484969685E-14 6.946345770551892E-13 -7.849076305241953E-14 2.362170842929437E-13 3.581217780584807E-15
tp -3.294090964850191E-13 6.946345770551892E-13 2.812605745875874E-9 2.024452562305684E-12 9.450599389389676E-10 -4.738888767024913E-15
node 3.265511889419417E-14 -7.849076305241953E-14 2.024452562305684E-12 5.266454420896769E-8 -5.265376142799096E-8 3.126975487639955E-10
peri -1.111211874466086E-13 2.362170842929437E-13 9.450599389389676E-10 -5.265376142799096E-8 5.297471245249491E-8 -3.126591600028021E-10
i -1.454680905661081E-15 3.581217780584807E-15 -4.738888767024913E-15 3.126975487639955E-10 -3.126591600028021E-10 3.558605192006007E-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 17.5   n/a MPO455542  

351241 (2004 RA18)          Discovered 2004-Sep-07 by Spacewatch at Kitt Peak
Reference: 20130127/Numbers.arcLast Updated: 2013-01-31
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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