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2990 Trimberger (1981 EN27)
Classification: Main-belt Asteroid          SPK-ID: 2002990
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219473932675681 1.7933e-08  
a 2.439071807425778 7.2993e-09 au
q 2.141633358517789 4.2531e-08 au
i 2.80538301713311 3.6902e-07 deg
node 171.6729894081893 4.9804e-06 deg
peri 320.2888130804617 7.4558e-06 deg
M 243.7280882453199 5.4771e-06 deg
tp 2459845.873666365873
(2022-Sep-23.37366637)
2.2185e-05 TDB
period 1391.346520843652
3.81
6.2457e-06
1.71e-08
d
yr
n .2587421570448974 1.1615e-09 deg/d
Q 2.736510256333768 8.1894e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2348  
   data-arc span      17752 days (48.60 yr)  
   first obs. used      1973-01-01  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45962  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:23:10  

Additional Information
 Earth MOID = 1.1575 au 
 Jupiter MOID = 2.29732 au 
 T_jup = 3.491 
[ 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 13.84   n/a MPO636108  
diameter diameter 10.828 km 0.692 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.787 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.055   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2990 Trimberger (1981 EN27)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 EN27 = 1973 AQ1 = 1977 GL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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