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21923 (1999 VT52)
Classification: Main-belt Asteroid          SPK-ID: 2021923
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1369668575183912 1.9097e-08  
a 2.648201371485158 1.0101e-08 au
q 2.285485551556942 4.9884e-08 au
i 14.53180935562734 3.4579e-07 deg
node 77.8850978131558 9.1062e-07 deg
peri 199.6960026213131 9.2585e-06 deg
M 152.7193997253636 7.7365e-06 deg
tp 2458728.745776348731
(2019-Sep-02.24577635)
3.2509e-05 TDB
period 1574.073241164873
4.31
9.0058e-06
2.466e-08
d
yr
n .2287060033709654 1.3085e-09 deg/d
Q 3.010917191413374 1.1484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2406  
   data-arc span      10153 days (27.80 yr)  
   first obs. used      1993-05-20  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42121  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:37:43  

Additional Information
 Earth MOID = 1.27389 au 
 Jupiter MOID = 2.10099 au 
 T_jup = 3.333 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457322.5 (2015-Oct-27.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1368778344216875 1.8985e-08  
q 2.286181104306464 4.9576e-08 au
tp 2457156.617783484392
(2015-May-14.11778348)
3.1441e-05 TDB
node 77.89946324138533 9.1127e-07 deg
peri 200.1631547843652 9.309e-06 deg
i 14.53104759737466 3.4575e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2406  
   data-arc span      10153 days (27.80 yr)  
   first obs. used      1993-05-20  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42121  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:37:43  

Additional Information
 Jupiter MOID = 2.10099 au 
 T_jup = 3.333 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.604454602670431E-16 -9.267702951589821E-16 -1.291145407879426E-13 -9.001473951692841E-15 -4.41994030840649E-14 -4.367291848230361E-15
q -9.267702951589821E-16 2.457788335325214E-15 3.417748516203742E-13 2.372989047591078E-14 1.169931834201246E-13 1.152904803432523E-14
tp -1.291145407879426E-13 3.417748516203742E-13 9.885307735315833E-10 4.956237858136098E-12 2.914769955899826E-10 3.3536428437251E-12
node -9.001473951692841E-15 2.372989047591078E-14 4.956237858136098E-12 8.304131815337734E-13 1.191418167062705E-12 2.032986159148213E-13
peri -4.41994030840649E-14 1.169931834201246E-13 2.914769955899826E-10 1.191418167062705E-12 8.66567501644427E-11 9.741808391556548E-13
i -4.367291848230361E-15 1.152904803432523E-14 3.3536428437251E-12 2.032986159148213E-13 9.741808391556548E-13 1.195410305748783E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.79   n/a E2021B10  
diameter diameter 8.366 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.208   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

21923 (1999 VT52)          Discovered 1999-Nov-03 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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