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71048 (1999 XA87)
Classification: Main-belt Asteroid          SPK-ID: 2071048
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2096118338987144 4.9375e-08  
a 2.695013891587069 1.6156e-08 au
q 2.130107087388992 1.3743e-07 au
i 12.03262972969968 4.3532e-06 deg
node 277.8160741233658 2.6919e-05 deg
peri 113.5092864588553 2.9558e-05 deg
M 278.9891026257832 1.298e-05 deg
tp 2459364.147730280368
(2021-May-29.64773028)
6.0146e-05 TDB
period 1615.994725946559
4.42
1.4532e-05
3.979e-08
d
yr
n .2227730042801546 2.0033e-09 deg/d
Q 3.259920695785146 1.9543e-08 au
  Orbit Determination Parameters
   # obs. used (total)      981  
   data-arc span      7538 days (20.64 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49302  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:37:58  

Additional Information
 Earth MOID = 1.16981 au 
 Jupiter MOID = 2.28805 au 
 T_jup = 3.307 
[ show covariance matrix ]

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 14.1   n/a MPO474590  
diameter diameter 5.509 km 0.472 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71048 (1999 XA87)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2073-Apr-23 19:38 00:01 Hygie 0.0365934565152099 0.0365818463173655 0.036605068001173 5.38802825056184 5.38802805460107 2478321.317988140 1.006305915739 672.857982792554 60.5690638383835 30.8696334839404 46847.0909239962 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 23:38:16 2020-Jun-23 23:38
2136-Feb-27 08:26 00:26 Eunom 0.0356447301153423 0.0356210712124987 0.0356684014574685 1.32827999284133 1.32827969635207 2501274.851333053 25.6502162617929 1568.42309002703 43.1463530802987 -41.7016796436587 81497.3614214874 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 23:38:16 2020-Jun-23 23:38
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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