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100720 (1998 BA28)
Classification: Outer Main-belt Asteroid          SPK-ID: 2100720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09714032005072623 5.6973e-08  
a 3.447193880720914 3.6211e-08 au
q 3.112332363870779 2.0654e-07 au
i 7.262415714682912 6.1941e-06 deg
node 301.7275563965574 4.1971e-05 deg
peri 359.3504764969237 5.5303e-05 deg
M 355.3749605183967 3.2093e-05 deg
tp 2459030.533775889618
(2020-Jun-30.03377589)
0.00020822 TDB
period 2337.744221053548
6.40
3.6835e-05
1.008e-07
d
yr
n .1539946058930944 2.4264e-09 deg/d
Q 3.782055397571048 3.9728e-08 au
  Orbit Determination Parameters
   # obs. used (total)      564  
   data-arc span      8327 days (22.80 yr)  
   first obs. used      1998-01-02  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:04:37  

Additional Information
 Earth MOID = 2.09681 au 
 Jupiter MOID = 1.44244 au 
 T_jup = 3.117 
[ 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 14.3   n/a MPO436469  
diameter diameter 6.950 km 0.779 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.084   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100720 (1998 BA28)          Discovered 1998-Jan-23 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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