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10531 (1991 GB1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2010531
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04372513629743852 4.132e-08  
a 1.961891681437719 5.946e-09 au
q 1.876107700266044 8.1189e-08 au
i 20.98366473927707 4.9104e-06 deg
node 24.03164004758062 1.1618e-05 deg
peri 221.9029218924396 6.0685e-05 deg
M 173.4879293319065 6.253e-05 deg
tp 2458516.798172468421
(2019-Feb-02.29817247)
0.00017374 TDB
period 1003.716273414206
2.75
4.563e-06
1.249e-08
d
yr
n .3586670950102628 1.6305e-09 deg/d
Q 2.047675662609394 6.206e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1120  
   data-arc span      11014 days (30.15 yr)  
   first obs. used      1989-10-04  
   last obs. used      2019-11-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46734  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:05:06  

Additional Information
 Earth MOID = .886246 au 
 Jupiter MOID = 2.93567 au 
 T_jup = 3.798 
[ 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 14.8   n/a MPO319217  
diameter diameter 2.111 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 55.1 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:
[Stephens, R.D.; Coley, D.; Warner, B.D. (2014) Minor Planet Bull. 41, 8-13.]
geometric albedo albedo 0.908   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10531 (1991 GB1)          Discovered 1991-Apr-08 by Helin, E. F. at Palomar
Reference: 19990504/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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