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71143 (1999 XR181)
Classification: Main-belt Asteroid          SPK-ID: 2071143
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2100723493732308 1.7908e-08  
a 2.598467767551047 1.0655e-08 au
q 2.052601538850984 4.7316e-08 au
i 14.48658791674666 4.3268e-07 deg
node 33.90777344376057 2.3683e-06 deg
peri 283.503488119619 5.0326e-06 deg
M 93.50554802997196 4.5042e-06 deg
tp 2458803.116978976687
(2019-Nov-15.61697898)
1.8065e-05 TDB
period 1529.940100693676
4.19
9.4107e-06
2.577e-08
d
yr
n .2353033297426322 1.4474e-09 deg/d
Q 3.14433399625111 1.2894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2071  
   data-arc span      7819 days (21.41 yr)  
   first obs. used      1999-10-05  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43874  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:54:20  

Additional Information
 Earth MOID = 1.09547 au 
 Jupiter MOID = 2.37352 au 
 T_jup = 3.340 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456876.5 (2014-Aug-07.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .210565450205814 1.7925e-08  
q 2.050525931361238 4.7451e-08 au
tp 2457275.130590292726
(2015-Sep-09.63059029)
1.6896e-05 TDB
node 33.93646683920723 2.3673e-06 deg
peri 283.8307171455466 5.0204e-06 deg
i 14.49630848061102 4.3311e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2071  
   data-arc span      7819 days (21.41 yr)  
   first obs. used      1999-10-05  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43874  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:54:20  

Additional Information
 Jupiter MOID = 2.37352 au 
 T_jup = 3.340 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.21315568224597E-16 -8.369377804782414E-16 6.013051039595046E-14 -3.998374665324422E-15 3.681146886061942E-14 -5.326721239230103E-15
q -8.369377804782414E-16 2.251641815699574E-15 -1.790705549006518E-13 1.025689243617034E-14 -1.0479110744152E-13 1.408267422002025E-14
tp 6.013051039595046E-14 -1.790705549006518E-13 2.854806690669914E-10 2.698338579445194E-11 7.70473963824881E-11 8.63334233936397E-13
node -3.998374665324422E-15 1.025689243617034E-14 2.698338579445194E-11 5.60433438633289E-12 3.840009147496076E-12 3.309054386930524E-13
peri 3.681146886061942E-14 -1.0479110744152E-13 7.70473963824881E-11 3.840009147496076E-12 2.520473629994275E-11 -1.45309697805127E-13
i -5.326721239230103E-15 1.408267422002025E-14 8.63334233936397E-13 3.309054386930524E-13 -1.45309697805127E-13 1.875865283221995E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.71   n/a E2021B10  
diameter diameter 5.037 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.566 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.304   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71143 (1999 XR181)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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