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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 58 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08348692561046443 4.7606e-08  
a 2.844455678522181 1.3336e-08 au
q 2.606980818887136 1.3329e-07 au
i 2.882459465107104 4.1918e-06 deg
node 135.9865085496376 7.9916e-05 deg
peri 220.5744583496347 8.2697e-05 deg
M 187.417308021966 2.2533e-05 deg
tp 2460040.524439802944
(2023-Apr-06.02443980)
0.00011087 TDB
period 1752.254498194696
4.80
1.2323e-05
3.374e-08
d
yr
n .2054496081310672 1.4448e-09 deg/d
Q 3.081930538157226 1.4449e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1960  
   data-arc span      9646 days (26.41 yr)  
   first obs. used      1994-10-09  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50077  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:14:30  

Additional Information
 Earth MOID = 1.60143 au 
 Jupiter MOID = 2.30001 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 13.81   n/a E2021B10  
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. 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:
[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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