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7785 (1994 QW)
Classification: Main-belt Asteroid          SPK-ID: 2007785
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1112770167961136 5.9471e-08  
a 2.302383891012308 1.405e-08 AU
q 2.04618148010103 1.3826e-07 AU
i 8.395956129162055 6.2178e-06 deg
node 136.2195738510666 4.094e-05 deg
peri 215.0902446973949 5.067e-05 deg
M 280.8563342498651 3.3791e-05 deg
tp 2457281.029601634682
(2015-Sep-15.52960163)
0.00012123 JED
period 1276.042190253405
3.49
1.168e-05
3.198e-08
d
yr
n .2821223332188638 2.5824e-09 deg/d
Q 2.558586301923586 1.5614e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      909  
   data-arc span      10121 days (27.71 yr)  
   first obs. used      1987-09-01  
   last obs. used      2015-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50615  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:59:31  

Additional Information
 Earth MOID = 1.04537 AU 
 T_jup = 3.568 
[ 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 13.8 mag n/a MPO256921  

7785 (1994 QW)          Discovered 1994-Aug-29 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1994 QW = 1987 RG2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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