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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 ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .120910141135438 3.751e-08  
a 2.252369591345881 5.5643e-09 au
q 1.980035266167082 8.4423e-08 au
i 3.625270921244776 4.0052e-06 deg
node 6.129686582091121 4.5454e-05 deg
peri 352.718604857127 4.7024e-05 deg
M 313.7740924913272 1.2825e-05 deg
tp 2459555.040730602961
(2021-Dec-06.54073060)
4.4201e-05 TDB
period 1234.689941054322
3.38
4.5753e-06
1.253e-08
d
yr
n .2915711775318993 1.0805e-09 deg/d
Q 2.524703916524681 6.2371e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1957  
   data-arc span      10821 days (29.63 yr)  
   first obs. used      1991-11-04  
   last obs. used      2021-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49126  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:57:44  

Additional Information
 Earth MOID = .975523 au 
 Jupiter MOID = 2.90096 au 
 T_jup = 3.614 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.59   n/a E2020-QM5  
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

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