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JPL Small-Body Database Browser
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48842 (1998 BA44)
Classification: Main-belt Asteroid          SPK-ID: 2048842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07837025740230644 5.5003e-08  
a 3.144774486103641 2.1674e-08 au
q 2.898317700155493 1.7181e-07 au
i 15.70582204637419 5.7337e-06 deg
node 332.8397742097609 1.6052e-05 deg
peri 21.48866794223337 3.1187e-05 deg
M 54.43965503489951 2.7096e-05 deg
tp 2458292.468201410641
(2018-Jun-22.96820141)
0.00015288 TDB
period 2036.960877527242
5.58
2.1058e-05
5.765e-08
d
yr
n .1767338803467939 1.8271e-09 deg/d
Q 3.391231272051789 2.3372e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1474  
   data-arc span      15592 days (42.69 yr)  
   first obs. used      1977-03-20  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49482  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:38:12  

Additional Information
 Earth MOID = 1.89549 au 
 Jupiter MOID = 2.01527 au 
 T_jup = 3.147 
[ 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 12.9   n/a MPO337648  
diameter diameter 17.019 km 0.361 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.184 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.051   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48842 (1998 BA44)          Discovered 1998-Jan-25 by Tombelli, M., Forti, G. at Cima Ekar
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 BA44 = 2001 ON21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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