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22899 Alconrad (1999 TO14)
Classification: Main-belt Asteroid          SPK-ID: 2022899
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 55 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0832659580017521 4.8672e-08  
a 2.845002780845975 1.3614e-08 au
q 2.608110898781186 1.3589e-07 au
i 2.882284746202173 4.2426e-06 deg
node 135.9850404712824 8.0135e-05 deg
peri 220.5623690372285 8.2973e-05 deg
M 146.3550816915526 2.2598e-05 deg
tp 2458287.929604093599
(2018-Jun-18.42960409)
0.0001094 TDB
period 1752.760065188162
4.80
1.2581e-05
3.444e-08
d
yr
n .2053903481429179 1.4743e-09 deg/d
Q 3.081894662910763 1.4748e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1920  
   data-arc span      9330 days (25.54 yr)  
   first obs. used      1994-10-09  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:35:45  

Additional Information
 Earth MOID = 1.60427 au 
 Jupiter MOID = 2.30005 au 
 T_jup = 3.301 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8   n/a MPO365524  
diameter diameter 5.682 km 0.471 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.03 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:
[Polishook, D.; Brosch, N.; Prialnik, D. (2011) Icarus 212, 167-174.]
geometric albedo albedo 0.181   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22899 Alconrad           Discovered 1999 Oct. 11 by K. Korlevic and M. Juric at Visnjan.
Albert R. Conrad (b. 1953) has been a dedicated adaptive-optics (AO) scientist at several U.S. observatories. Using AO, he has co-discovered many satellites of asteroids and made disk-resolved studies of asteroids and planetary satellites for size/shape/pole and topography. He has developed many innovative AO techniques.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-06-20Last Updated: 2016-06-21

Alternate Designations
 1999 TO14 = 1998 ML48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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