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21086 (1992 AO1)
Classification: Main-belt Asteroid          SPK-ID: 2021086
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090659097575237 2.857e-08  
a 2.410879257632078 7.9747e-09 au
q 1.906846592319684 7.0916e-08 au
i 4.069191223796392 3.0997e-06 deg
node 61.99921939297609 4.9611e-05 deg
peri 42.99969288019562 5.0456e-05 deg
M 275.4096310867149 1.1494e-05 deg
tp 2459521.777295881891
(2021-Nov-03.27729588)
4.464e-05 TDB
period 1367.293085528987
3.74
6.7841e-06
1.857e-08
d
yr
n .2632939519771805 1.3064e-09 deg/d
Q 2.914911922944472 9.6419e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2064  
   data-arc span      23088 days (63.21 yr)  
   first obs. used      1957-11-26  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46181  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:38:42  

Additional Information
 Earth MOID = .925896 au 
 Jupiter MOID = 2.23787 au 
 T_jup = 3.486 
[ 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 14.05   n/a E2021B10  
diameter diameter 3.841 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 19.025 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.330   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

21086 (1992 AO1)          Discovered 1992-Jan-10 by Hioki, T., Hayakawa, S. at Okutama
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1992 AO1 = 1957 WD1 = 1998 SR66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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