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 ]  
80355 (1999 XL123)
Classification: Main-belt Asteroid          SPK-ID: 2080355
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .143935670646449 4.4896e-08  
a 2.25454197546888 8.5133e-09 au
q 1.930032964229197 1.0164e-07 au
i 5.369860834693799 4.9208e-06 deg
node 335.6999964026866 4.4806e-05 deg
peri 9.389929925285625 4.765e-05 deg
M 77.37993413807938 1.4405e-05 deg
tp 2458734.726442254018
(2019-Sep-08.22644225)
4.9537e-05 TDB
period 1236.476637700695
3.39
7.0036e-06
1.917e-08
d
yr
n .291149860032489 1.6491e-09 deg/d
Q 2.579050986708564 9.7387e-09 au
  Orbit Determination Parameters
   # obs. used (total)      571  
   data-arc span      7419 days (20.31 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5567  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:57:26  

Additional Information
 Earth MOID = .922637 au 
 Jupiter MOID = 2.8089 au 
 T_jup = 3.605 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457134.5 (2015-Apr-22.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1447844348329175 4.4963e-08  
q 1.927627436010118 1.0188e-07 au
tp 2457498.678944960166
(2016-Apr-20.17894496)
4.9924e-05 TDB
node 335.7786181502305 4.4783e-05 deg
peri 9.426588553134083 4.7584e-05 deg
i 5.372159065667687 4.9229e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      571  
   data-arc span      7419 days (20.31 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5567  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:57:26  

Additional Information
 Jupiter MOID = 2.8089 au 
 T_jup = 3.605 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.021640928423454E-15 -4.569060314892362E-15 2.612971202546571E-13 8.626173570566171E-15 8.937934066058245E-14 -7.205279883322845E-16
q -4.569060314892362E-15 1.037963632168153E-14 -6.614055043638155E-13 -2.082145163297387E-14 -2.276228272335271E-13 1.795331096889287E-15
tp 2.612971202546571E-13 -6.614055043638155E-13 2.492402034135054E-9 -7.916205319712898E-14 8.165478520025846E-10 7.591843961136754E-13
node 8.626173570566171E-15 -2.082145163297387E-14 -7.916205319712898E-14 2.00548912967994E-9 -1.995560382608939E-9 3.017301104656992E-11
peri 8.937934066058245E-14 -2.276228272335271E-13 8.165478520025846E-10 -1.995560382608939E-9 2.264221407177611E-9 -2.985203544230583E-11
i -7.205279883322845E-16 1.795331096889287E-15 7.591843961136754E-13 3.017301104656992E-11 -2.985203544230583E-11 2.423538032357116E-11

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 16.2   n/a MPO493437  
diameter diameter 1.661 km 0.364 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

80355 (1999 XL123)          Discovered 1999-Dec-07 by CSS at Catalina
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-26 18:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin