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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1953370961228907 5.4861e-08  
a 2.342685467059709 1.201e-08 au
q 1.885072090794968 1.2904e-07 au
i 2.665890469469113 6.4992e-06 deg
node 200.3128322534409 8.3875e-05 deg
peri 220.8859924324427 8.5708e-05 deg
M 343.1197141868996 1.3738e-05 deg
tp 2459061.911074597313
(2020-Jul-31.41107460)
5.0025e-05 TDB
period 1309.69268529062
3.59
1.0071e-05
2.757e-08
d
yr
n .2748736432929807 2.1138e-09 deg/d
Q 2.800298843324451 1.4356e-08 au
  Orbit Determination Parameters
   # obs. used (total)      345  
   data-arc span      7518 days (20.58 yr)  
   first obs. used      1998-10-11  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53191  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:57:36  

Additional Information
 Earth MOID = .898775 au 
 Jupiter MOID = 2.52967 au 
 T_jup = 3.536 
[ 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. 2019-August); 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) ArXiv:1901.08719.]
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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