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27770 (1991 VF1)
Classification: Main-belt Asteroid          SPK-ID: 2027770
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .120777550454181 3.9607e-08  
a 2.251609811877064 5.8889e-09 au
q 1.979665894219953 8.8575e-08 au
i 3.625217790285197 4.168e-06 deg
node 6.139142841542283 4.6287e-05 deg
peri 352.9060161873026 4.7918e-05 deg
M 198.0583741827315 1.3192e-05 deg
tp 2459555.629261330002
(2021-Dec-07.12926133)
4.605e-05 TDB
period 1234.065256972925
3.38
4.8414e-06
1.326e-08
d
yr
n .2917187709206357 1.1445e-09 deg/d
Q 2.523553729534175 6.6002e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1848  
   data-arc span      10403 days (28.48 yr)  
   first obs. used      1991-11-04  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49539  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:22:53  

Additional Information
 Earth MOID = .976035 au 
 Jupiter MOID = 2.90297 au 
 T_jup = 3.614 
[ 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 14.6   n/a MPO452559  
diameter diameter 3.696 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.225   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27770 (1991 VF1)          Discovered 1991-Nov-04 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 VF1 = 1998 XO17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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