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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02749500804138408 5.2106e-08  
a 2.696505640859398 1.568e-08 au
q 2.622365196580331 1.4451e-07 au
i 26.83615075218027 5.6456e-06 deg
node 171.9718068789151 7.5677e-06 deg
peri 194.4330373410105 7.1534e-05 deg
M 313.4905231748731 6.9606e-05 deg
tp 2459209.448558831612
(2020-Dec-25.94855883)
0.00031224 TDB
period 1617.336644361945
4.43
1.4107e-05
3.862e-08
d
yr
n .2225881675623713 1.9415e-09 deg/d
Q 2.770646085138464 1.6111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      684  
   data-arc span      8097 days (22.17 yr)  
   first obs. used      1998-08-30  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55247  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:02:55  

Additional Information
 Earth MOID = 1.61939 au 
 Jupiter MOID = 2.34121 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 15.1   n/a MPO474884  
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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