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120042 (2003 BQ9)
Classification: Main-belt Asteroid          SPK-ID: 2120042
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .195495260957515 3.6884e-08  
a 2.34313988076318 9.8401e-09 au
q 1.885067138313422 8.6132e-08 au
i 2.665730420172535 4.3898e-06 deg
node 200.3083951002723 8.1774e-05 deg
peri 220.8879835756403 8.2759e-05 deg
M 38.08446484306976 1.0789e-05 deg
tp 2459061.907060121437
(2020-Jul-31.40706012)
3.9072e-05 TDB
period 1310.073767922772
3.59
8.2525e-06
2.259e-08
d
yr
n .2747936862905126 1.731e-09 deg/d
Q 2.801212623212939 1.1764e-08 au
  Orbit Determination Parameters
   # obs. used (total)      417  
   data-arc span      8135 days (22.27 yr)  
   first obs. used      1998-10-11  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50639  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:24:01  

Additional Information
 Earth MOID = .898093 au 
 Jupiter MOID = 2.52943 au 
 T_jup = 3.535 
[ 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 16.9   n/a MPO475054  
diameter diameter 1.427 km 0.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.10 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]
geometric albedo albedo 0.151   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120042 (2003 BQ9)          Discovered 2003-Jan-26 by NEAT at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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