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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1214424422076382 1.8064e-08  
a 2.440632518398653 7.4171e-09 au
q 2.144236144832942 4.274e-08 au
i 2.803368199921951 3.6899e-07 deg
node 171.6827419659363 4.9853e-06 deg
peri 320.038429270595 7.4943e-06 deg
M 193.2988391409581 5.3937e-06 deg
tp 2459845.393708974870
(2022-Sep-22.89370898)
2.2246e-05 TDB
period 1392.682174704608
3.81
6.3485e-06
1.738e-08
d
yr
n .2584940100036514 1.1783e-09 deg/d
Q 2.737028891964365 8.3178e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2309  
   data-arc span      17506 days (47.93 yr)  
   first obs. used      1973-01-01  
   last obs. used      2020-12-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45979  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:32:34  

Additional Information
 Earth MOID = 1.15946 au 
 Jupiter MOID = 2.2977 au 
 T_jup = 3.490 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.83   n/a E2021B10  
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

[ show close-approach data ]
Alternate Designations
 1981 EN27 = 1973 AQ1 = 1977 GL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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