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7057 (1990 QL2)
Classification: Main-belt Asteroid          SPK-ID: 2007057
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1297013299761639 5.3575e-08  
a 2.262292729720089 1.3618e-08 AU
q 1.968870353879987 1.2108e-07 AU
i 5.123414538335759 6.4045e-06 deg
node 160.0174203870355 5.6857e-05 deg
peri 224.5490836954463 6.1636e-05 deg
M 319.8895568118834 2.4559e-05 deg
tp 2456938.976662062037
(2014-Oct-08.47666206)
8.5106e-05 JED
period 1242.858327656245
3.40
1.1222e-05
3.072e-08
d
yr
n .289654896289652 2.6154e-09 deg/d
Q 2.555715105560191 1.5384e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1156  
   data-arc span      8710 days (23.85 yr)  
   first obs. used      1990-08-22  
   last obs. used      2014-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53473  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:16:09  

Additional Information
 Earth MOID = .974311 AU 
 T_jup = 3.602 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6 mag n/a MPO263412  

7057 (1990 QL2)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 QL2 = 1992 EK 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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