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6488 Drebach (1991 GU9)
Classification: Main-belt Asteroid          SPK-ID: 2006488
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09280355667575761 1.5442e-08  
a 2.490172191235377 7.6619e-09 au
q 2.259075355153669 3.7451e-08 au
i 11.82855859075352 4.5489e-07 deg
node 96.10925071273506 2.9735e-06 deg
peri 262.5253537260469 1.0321e-05 deg
M 106.9742748336027 1e-05 deg
tp 2458969.999695527047
(2020-Apr-30.49969553)
3.9818e-05 TDB
period 1435.299373135207
3.93
6.6243e-06
1.814e-08
d
yr
n .2508187537305415 1.1576e-09 deg/d
Q 2.721269027317085 8.373e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2513  
   data-arc span      12884 days (35.27 yr)  
   first obs. used      1986-01-11  
   last obs. used      2021-04-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43465  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 11:50:04  

Additional Information
 Earth MOID = 1.2895 au 
 Jupiter MOID = 2.65989 au 
 T_jup = 3.438 
[ 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 12.96   n/a MPCxxxxx  
diameter diameter 9.131 km 0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.1270 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Oey, J.; Groom, R. (2019) Minor Planet Bull. 46, 119-125.]
geometric albedo albedo 0.092   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6488 Drebach (1991 GU9)          Discovered 1991-Apr-10 by Borngen, F. at Tautenburg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 GU9 = 1986 AW = 1990 BQ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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