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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .120777550296542 3.9691e-08  
a 2.251609811556266 6.149e-09 au
q 1.979665894292842 8.8677e-08 au
i 3.625217689921821 4.1986e-06 deg
node 6.139131504967185 5.1085e-05 deg
peri 352.9060285443056 5.2937e-05 deg
M 198.058373474668 1.3922e-05 deg
tp 2459555.629263638576
(2021-Dec-07.12926364)
4.8306e-05 TDB
period 1234.065256709189
3.38
5.0552e-06
1.384e-08
d
yr
n .2917187709829796 1.195e-09 deg/d
Q 2.523553728819691 6.8916e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1684  
   data-arc span      10318 days (28.25 yr)  
   first obs. used      1991-11-04  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50793  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:09:50  

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

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