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21103 (1992 OB3)
Classification: Main-belt Asteroid          SPK-ID: 2021103
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1053087721585018 3.1349e-08  
a 2.245077335721967 6.9458e-09 au
q 2.008650998096206 6.8714e-08 au
i 5.82769627151965 3.7984e-06 deg
node 305.3654090286423 2.8935e-05 deg
peri 323.9892607701036 3.4171e-05 deg
M 252.1552606250897 1.9657e-05 deg
tp 2459764.579686037824
(2022-Jul-04.07968604)
6.7708e-05 TDB
period 1228.69866199931
3.36
5.702e-06
1.561e-08
d
yr
n .2929929128548217 1.3597e-09 deg/d
Q 2.481503673347728 7.6773e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1454  
   data-arc span      11019 days (30.17 yr)  
   first obs. used      1991-03-08  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:57:33  

Additional Information
 Earth MOID = .995666 au 
 Jupiter MOID = 2.60758 au 
 T_jup = 3.617 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457680.5 (2016-Oct-19.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1055688012522054 3.133e-08  
q 2.007931792957446 6.8712e-08 au
tp 2457308.197888338779
(2015-Oct-12.69788834)
6.4183e-05 TDB
node 305.406929558371 2.8954e-05 deg
peri 324.1430244206189 3.416e-05 deg
i 5.82588659064491 3.7974e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1454  
   data-arc span      11019 days (30.17 yr)  
   first obs. used      1991-03-08  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:57:33  

Additional Information
 Jupiter MOID = 2.60758 au 
 T_jup = 3.617 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.815861021837381E-16 -2.14481946205211E-15 7.966411531713962E-13 7.464772571119857E-15 2.147349758975295E-13 -1.821450885950843E-16
q -2.14481946205211E-15 4.721308790935824E-15 -1.705879079425709E-12 -1.658138521317101E-14 -4.570275279764618E-13 4.635872260206445E-16
tp 7.966411531713962E-13 -1.705879079425709E-12 4.119431517606411E-9 1.425065774716631E-11 1.169452933040859E-9 -1.710669885585058E-13
node 7.464772571119857E-15 -1.658138521317101E-14 1.425065774716631E-11 8.383149276158202E-10 -8.296054577533108E-10 1.308480884817965E-11
peri 2.147349758975295E-13 -4.570275279764618E-13 1.169452933040859E-9 -8.296054577533108E-10 1.166926970918624E-9 -1.309011022414496E-11
i -1.821450885950843E-16 4.635872260206445E-16 -1.710669885585058E-13 1.308480884817965E-11 -1.309011022414496E-11 1.442037386584402E-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 15.24   n/a MPO636381  

21103 (1992 OB3)          Discovered 1992-Jul-26 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1992 OB3 = 1998 FV97 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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