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16871 (1998 BD)
Classification: Main-belt Asteroid          SPK-ID: 2016871
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1769766804471619 2.9538e-08  
a 2.263408555908085 6.6802e-09 au
q 1.862838023187767 6.8868e-08 au
i 5.304782107764109 3.258e-06 deg
node 52.07283183076119 3.3633e-05 deg
peri 319.320926215012 3.486e-05 deg
M 348.8362868779066 8.8268e-06 deg
tp 2459239.069945365729
(2021-Jan-24.56994537)
3.0517e-05 TDB
period 1243.777959878167
3.41
5.5063e-06
1.508e-08
d
yr
n .2894407294653005 1.2814e-09 deg/d
Q 2.663979088628402 7.8624e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1986  
   data-arc span      10540 days (28.86 yr)  
   first obs. used      1992-04-04  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46456  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:45:00  

Additional Information
 Earth MOID = .865642 au 
 Jupiter MOID = 2.80368 au 
 T_jup = 3.592 
[ 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 14.69   n/a E2021B10  
diameter diameter 3.057 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 23.993 h n/a LCDB (Rev. 2020-October); 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.198   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16871 (1998 BD)          Discovered 1998-Jan-16 by Kobayashi, T. at Oizumi
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 BD = 1999 JD28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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