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22688 (1998 QB77)
Classification: Main-belt Asteroid          SPK-ID: 2022688
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1355144054668906 2.9342e-08  
a 2.639815179259837 1.1209e-08 au
q 2.282082194699967 7.6713e-08 au
i 12.59907745258731 3.0797e-06 deg
node 313.3809395064874 1.5478e-05 deg
peri 280.8522389714047 2.0385e-05 deg
M 175.109616158995 1.4977e-05 deg
tp 2458438.480289805048
(2018-Nov-15.98028981)
6.3662e-05 TDB
period 1566.602118647219
4.29
9.9782e-06
2.732e-08
d
yr
n .2297967018650943 1.4637e-09 deg/d
Q 2.997548163819707 1.2728e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1687  
   data-arc span      10655 days (29.17 yr)  
   first obs. used      1992-01-01  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47307  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:09:25  

Additional Information
 Earth MOID = 1.3093 au 
 Jupiter MOID = 2.19711 au 
 T_jup = 3.349 
[ 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 14.17   n/a E2021B10  
diameter diameter 4.237 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.271   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22688 (1998 QB77)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QB77 = 1999 XW208 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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