Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
80291 (1999 XB55)
Classification: Main-belt Asteroid          SPK-ID: 2080291
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .119836558230009 4.6148e-08  
a 2.17998006201422 7.8028e-09 au
q 1.918738754372394 1.0088e-07 au
i 1.673100241459841 3.815e-06 deg
node 85.23974011327316 0.00017747 deg
peri 269.4539489133196 0.00017819 deg
M 192.1659686584098 1.6079e-05 deg
tp 2459548.593604970087
(2021-Nov-30.09360497)
5.2722e-05 TDB
period 1175.647728961723
3.22
6.312e-06
1.728e-08
d
yr
n .3062141754979061 1.644e-09 deg/d
Q 2.441221369656045 8.7379e-09 au
  Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      9145 days (25.04 yr)  
   first obs. used      1994-01-10  
   last obs. used      2019-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5348  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:39:22  

Additional Information
 Earth MOID = .914612 au 
 Jupiter MOID = 2.95577 au 
 T_jup = 3.672 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456975.5 (2014-Nov-14.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1201078108178444 4.6141e-08  
q 1.918372166463669 1.0089e-07 au
tp 2457195.670662840762
(2015-Jun-22.17066284)
5.2749e-05 TDB
node 85.25503770323456 0.00017745 deg
peri 269.1234960959192 0.00017817 deg
i 1.673187694453288 3.8145e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      9145 days (25.04 yr)  
   first obs. used      1994-01-10  
   last obs. used      2019-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5348  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:39:22  

Additional Information
 Jupiter MOID = 2.95577 au 
 T_jup = 3.672 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.128980186960079E-15 -4.644239592610542E-15 1.226304243142551E-12 1.930595974683087E-14 3.557513158584802E-13 -1.046184697622785E-15
q -4.644239592610542E-15 1.017789257844737E-14 -2.721626095592271E-12 -4.16716228517253E-14 -7.938188944870752E-13 2.306805895394141E-15
tp 1.226304243142551E-12 -2.721626095592271E-12 2.782458473017539E-9 8.633694933963501E-13 8.7547027046076E-10 -6.383787262631073E-13
node 1.930595974683087E-14 -4.16716228517253E-14 8.633694933963501E-13 3.148766552654984E-8 -3.147385612601025E-8 -3.329274359106215E-10
peri 3.557513158584802E-13 -7.938188944870752E-13 8.7547027046076E-10 -3.147385612601025E-8 3.174387348906246E-8 3.325923345577841E-10
i -1.046184697622785E-15 2.306805895394141E-15 -6.383787262631073E-13 -3.329274359106215E-10 3.325923345577841E-10 1.455016447047817E-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 16.8   n/a MPO453225  

80291 (1999 XB55)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1999 XB55 = 1997 AC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-18 16:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin