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22999 Irizarry (1999 VS81)
Classification: Main-belt Asteroid          SPK-ID: 2022999
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09714649803510987 2.7152e-08  
a 2.636668989347422 1.0551e-08 au
q 2.380525830554548 7.4573e-08 au
i 2.841329439206187 3.5728e-06 deg
node 200.1145231528752 6.1763e-05 deg
peri 246.9260700732568 6.5715e-05 deg
M 282.479660887992 2.4854e-05 deg
tp 2459537.240232176801
(2021-Nov-18.74023218)
0.00010899 TDB
period 1563.802286887445
4.28
9.3864e-06
2.57e-08
d
yr
n .2302081299014695 1.3818e-09 deg/d
Q 2.892812148140297 1.1576e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1746  
   data-arc span      9214 days (25.23 yr)  
   first obs. used      1995-11-16  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50906  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:15:56  

Additional Information
 Earth MOID = 1.39823 au 
 Jupiter MOID = 2.27784 au 
 T_jup = 3.389 
[ 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 14.48   n/a E2021B10  
diameter diameter 3.271 km 0.290 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.345   0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22999 Irizarry           Discovered 1999 Nov. 5 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Carmen Irizarry mentored a finalist in the 2007 Intel Science Talent Search (STS), a science competition for high school seniors. She teaches at the Staten Island Technical High School, Staten Island, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070303/MPCPages.arcLast Updated: 2010-04-12

[ show close-approach data ]
Alternate Designations
 1999 VS81 = 1995 WT41 = 1997 EE52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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