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16885 (1998 BX25)
Classification: Main-belt Asteroid          SPK-ID: 2016885
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07554446315546808 6.2399e-08  
a 2.891402671713956 3.0844e-08 AU
q 2.67297320911304 1.7979e-07 AU
i 11.60575848741364 7.7581e-06 deg
node 294.2627269547706 3.1014e-05 deg
peri 156.0556070389039 5.9534e-05 deg
M 188.1905074557471 5.418e-05 deg
tp 2457857.549583464462
(2017-Apr-14.04958346)
0.00027675 JED
period 1795.813755562642
4.92
2.8735e-05
7.867e-08
d
yr
n .2004662225605959 3.2077e-09 deg/d
Q 3.109832134314873 3.3174e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      9059 days (24.80 yr)  
   first obs. used      1990-09-09  
   last obs. used      2015-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50866  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:19:35  

Additional Information
 Earth MOID = 1.69358 AU 
 T_jup = 3.256 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a MPO299084  
rotation period rot_per 4.9925 h n/a LCDB (Rev. 2015-July); 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., in press.]

16885 (1998 BX25)          Discovered 1998-Jan-25 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 BX25 = 1990 RB18 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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