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
JPL Small-Body Database Browser
Search: [ help ]  
129450 (1991 JM)
Classification: Mars-crossing Asteroid          SPK-ID: 2129450
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1263841816115385 1.0357e-07  
a 1.851337026488149 6.0784e-09 au
q 1.617357311508305 1.9338e-07 au
i 24.49733957763008 8.0152e-06 deg
node 64.3089254723329 1.2574e-05 deg
peri 353.3048010882421 3.6442e-05 deg
M 352.5214420198205 3.1475e-05 deg
tp 2459019.613579255112
(2020-Jun-19.11357926)
8.0475e-05 TDB
period 920.0822605209282
2.52
4.5313e-06
1.241e-08
d
yr
n .3912693630199725 1.9269e-09 deg/d
Q 2.085316741467993 6.8466e-09 au
  Orbit Determination Parameters
   # obs. used (total)      710  
   data-arc span      10732 days (29.38 yr)  
   first obs. used      1991-05-05  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 20:28:43  

Additional Information
 Earth MOID = .631428 au 
 Jupiter MOID = 3.25356 au 
 T_jup = 3.887 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO385564  

129450 (1991 JM)          Discovered 1991-May-05 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

Alternate Designations
 1991 JM = 2002 VF48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-31 01:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin