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21935 (1999 VZ77)
Classification: Main-belt Asteroid          SPK-ID: 2021935
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09231025107398037 1.4663e-08  
a 2.275099420669777 6.7307e-09 au
q 2.065084421929482 3.3644e-08 au
i 6.270242750859334 6.6469e-07 deg
node 292.337144839458 6.4354e-06 deg
peri 203.4919324095491 1.199e-05 deg
M 319.9938900264167 1.3214e-05 deg
tp 2459339.790924323299
(2021-May-05.29092432)
4.6283e-05 TDB
period 1253.426858784797
3.43
5.5622e-06
1.523e-08
d
yr
n .2872126103544819 1.2745e-09 deg/d
Q 2.485114419410071 7.352e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2259  
   data-arc span      16078 days (44.02 yr)  
   first obs. used      1977-02-25  
   last obs. used      2021-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44924  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 03:06:15  

Additional Information
 Earth MOID = 1.08084 au 
 Jupiter MOID = 2.55066 au 
 T_jup = 3.596 
[ 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 13.78   n/a E2021B10  
diameter diameter 5.046 km 0.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 55.531 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.252   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

21935 (1999 VZ77)          Discovered 1999-Nov-04 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 VZ77 = 1992 SX23 = 1994 GJ11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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