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85854 (1999 AE13)
Classification: Main-belt Asteroid          SPK-ID: 2085854
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1771419379182758 3.2493e-08  
a 2.599224073903857 9.6665e-09 au
q 2.138792484368692 8.338e-08 au
i 6.368968450057322 4.3403e-06 deg
node 289.4609790057082 4.0553e-05 deg
peri 168.6710065418935 4.482e-05 deg
M 52.42344121314927 1.6813e-05 deg
tp 2458777.611822536483
(2019-Oct-21.11182254)
7.1436e-05 TDB
period 1530.608102597045
4.19
8.5385e-06
2.338e-08
d
yr
n .2352006365242504 1.3121e-09 deg/d
Q 3.059655663439023 1.1379e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1055  
   data-arc span      7805 days (21.37 yr)  
   first obs. used      1998-12-13  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53887  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:40:35  

Additional Information
 Earth MOID = 1.15607 au 
 Jupiter MOID = 2.10835 au 
 T_jup = 3.384 
[ 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 15.1   n/a MPO412683  
diameter diameter 2.577 km 0.720 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 46.054 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.292   0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85854 (1999 AE13)          Discovered 1999-Jan-07 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ 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
1917-Jul-27 22:35 00:04 Hygie 0.022708092248197 0.022697851474654 0.0227183410071334 4.05240581853863 4.05240539867441 2421437.441035756 3.86765785605408 849.781371218774 83.927055139459 -53.4891689599223 32561.002216209 T 25 CATAB v2.0f-lin.ifort 2020-May-20 15:40:50 2020-May-20 15:40
1951-Jan-09 15:14 00:04 Hygie 0.0193000116922512 0.0192918176507349 0.0193082080310003 3.45124428187642 3.4512437018214 2433656.134590157 4.4855289259292 529.687189324027 83.1976809189138 40.2882336212452 22765.6929632265 T 25 CATAB v2.0f-lin.ifort 2020-May-20 15:40:50 2020-May-20 15:40

Alternate Designations
 1999 AE13 = 2001 SC79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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