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101018 (1998 QB57)
Classification: Main-belt Asteroid          SPK-ID: 2101018
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02718288954257483 5.1339e-08  
a 2.695458093786536 1.5405e-08 au
q 2.622187754156497 1.4255e-07 au
i 26.84273996448682 5.4587e-06 deg
node 171.9677638440593 7.245e-06 deg
peri 194.9042101263038 6.9942e-05 deg
M 357.5611557925232 6.7861e-05 deg
tp 2459211.450371698966
(2020-Dec-27.95037170)
0.00030467 TDB
period 1616.394273788487
4.43
1.3857e-05
3.794e-08
d
yr
n .2227179382145645 1.9093e-09 deg/d
Q 2.768728433416574 1.5823e-08 au
  Orbit Determination Parameters
   # obs. used (total)      731  
   data-arc span      8167 days (22.36 yr)  
   first obs. used      1998-08-30  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55256  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:48  

Additional Information
 Earth MOID = 1.61762 au 
 Jupiter MOID = 2.34034 au 
 T_jup = 3.214 
[ 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 15.11   n/a E2021B55  
diameter diameter 4.923 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101018 (1998 QB57)          Discovered 1998-Aug-30 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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