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27171 (1999 AD33)
Classification: Main-belt Asteroid          SPK-ID: 2027171
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02391883683380031 4.8316e-08  
a 2.981044166157845 1.7343e-08 au
q 2.909741057153163 1.4687e-07 au
i 11.06060890495007 4.8351e-06 deg
node 121.1269730805609 2.4688e-05 deg
peri 24.53852148836001 0.00010074 deg
M 29.42002470462677 9.6312e-05 deg
tp 2458846.864501168622
(2019-Dec-29.36450117)
0.00050295 TDB
period 1879.97053485131
5.15
1.6406e-05
4.492e-08
d
yr
n .1914923629526316 1.6711e-09 deg/d
Q 3.052347275162527 1.7758e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1366  
   data-arc span      9597 days (26.28 yr)  
   first obs. used      1994-01-12  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52712  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:08:59  

Additional Information
 Earth MOID = 1.92633 au 
 Jupiter MOID = 1.98138 au 
 T_jup = 3.231 
[ 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 13.7   n/a MPO384980  
diameter diameter 6.913 km 0.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.108 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 0.161   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27171 (1999 AD33)          Discovered 1999-Jan-15 by Spacewatch at Kitt Peak
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 AD33 = 1999 BR9 = 2000 GU135 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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