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22888 (1999 SL4)
Classification: Main-belt Asteroid          SPK-ID: 2022888
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2783542804296797 3.9883e-08  
a 3.145647647017559 2.13e-08 au
q 2.270043159746671 1.2515e-07 au
i 4.69055605136582 4.7984e-06 deg
node 198.4206988432435 5.6407e-05 deg
peri 214.4457535402041 5.7077e-05 deg
M 279.1084817883092 1.2575e-05 deg
tp 2459658.393021062308
(2022-Mar-19.89302106)
7.4743e-05 TDB
period 2037.809293565801
5.58
2.0698e-05
5.667e-08
d
yr
n .1766602994385527 1.7943e-09 deg/d
Q 4.021252134288446 2.7229e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1110  
   data-arc span      23646 days (64.74 yr)  
   first obs. used      1955-10-25  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50774  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:14:22  

Additional Information
 Earth MOID = 1.28212 au 
 Jupiter MOID = 1.3773 au 
 T_jup = 3.143 
[ 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 13.46   n/a E2021B10  
diameter diameter 9.906 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22888 (1999 SL4)          Discovered 1999-Sep-29 by Korlevic, K. at Visnjan
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 SL4 = 1977 RX5 = 1988 TE2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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