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21883 (1999 UC25)
Classification: Main-belt Asteroid          SPK-ID: 2021883
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06873520500840773 2.8409e-08  
a 2.35766847136978 7.4444e-09 au
q 2.195613645648319 6.6156e-08 au
i 6.564204724041326 3.6058e-06 deg
node 354.19425938 2.9095e-05 deg
peri 241.2438415521152 4.0906e-05 deg
M 148.2108973813871 2.8583e-05 deg
tp 2458852.122500223640
(2020-Jan-03.62250022)
0.00010517 TDB
period 1322.277264236448
3.62
6.2627e-06
1.715e-08
d
yr
n .2722575739119909 1.2895e-09 deg/d
Q 2.519723297091241 7.9561e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1976  
   data-arc span      16016 days (43.85 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-07-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47996  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:03:27  

Additional Information
 Earth MOID = 1.19417 au 
 Jupiter MOID = 2.4792 au 
 T_jup = 3.541 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456964.5 (2014-Nov-03.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06861116812830712 2.8471e-08  
q 2.196249948144592 6.6335e-08 au
tp 2457529.239294483891
(2016-May-20.73929448)
0.00010592 TDB
node 354.27138666015 2.9132e-05 deg
peri 241.3877536966343 4.0928e-05 deg
i 6.560520546859808 3.603e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1976  
   data-arc span      16016 days (43.85 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-07-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47996  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:03:27  

Additional Information
 Jupiter MOID = 2.4792 au 
 T_jup = 3.541 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.10576865650283E-16 -1.878577371272569E-15 2.342472791222188E-14 -3.866564550193679E-15 5.378210467461731E-16 1.08204323723553E-16
q -1.878577371272569E-15 4.400315479447715E-15 -1.618187671098909E-13 8.956935307996377E-15 -3.538328057076218E-14 -2.634267558844105E-16
tp 2.342472791222188E-14 -1.618187671098909E-13 1.121864929885973E-8 -4.04063376944537E-12 3.053736080307878E-9 -2.316753485635651E-12
node -3.866564550193679E-15 8.956935307996377E-15 -4.04063376944537E-12 8.486749687377245E-10 -8.439167772622934E-10 -1.234751805072502E-11
peri 5.378210467461731E-16 -3.538328057076218E-14 3.053736080307878E-9 -8.439167772622934E-10 1.675098367603927E-9 1.167296745493207E-11
i 1.08204323723553E-16 -2.634267558844105E-16 -2.316753485635651E-12 -1.234751805072502E-11 1.167296745493207E-11 1.298164317452824E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.51   n/a E2021B10  

21883 (1999 UC25)          Discovered 1999-Oct-28 by CSS at Catalina
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 UC25 = 1977 RO14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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