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 ]  
187834 (1999 VM121)
Classification: Main-belt Asteroid          SPK-ID: 2187834
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1315693279973903 5.8148e-08  
a 3.150766622901536 3.4479e-08 au
q 2.736222375649774 1.8776e-07 au
i 5.182620569767989 6.4563e-06 deg
node 32.66364036251719 6.0439e-05 deg
peri 339.1289972283863 6.4146e-05 deg
M 303.8983067683558 2.434e-05 deg
tp 2459518.843692577489
(2021-Oct-31.34369258)
0.00014141 TDB
period 2042.785568961294
5.59
3.3532e-05
9.181e-08
d
yr
n .1762299506467784 2.8928e-09 deg/d
Q 3.565310870153298 3.9016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      280  
   data-arc span      7170 days (19.63 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-05-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58069  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:01  

Additional Information
 Earth MOID = 1.73586 au 
 Jupiter MOID = 1.89924 au 
 T_jup = 3.188 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457239.5 (2015-Aug-05.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1339507961046997 5.7826e-08  
q 2.72356675947773 1.862e-07 au
tp 2457488.562662155248
(2016-Apr-10.06266216)
0.00012249 TDB
node 32.81910765236648 6.0297e-05 deg
peri 340.3465364131093 6.3915e-05 deg
i 5.192441470531643 6.4665e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      280  
   data-arc span      7170 days (19.63 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-05-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58069  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:01  

Additional Information
 Jupiter MOID = 1.89924 au 
 T_jup = 3.188 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.343871650628936E-15 -1.0636175881595E-14 -2.550068643480212E-13 6.971966006584715E-15 -3.895907374558007E-15 -3.855840768374355E-15
q -1.0636175881595E-14 3.467174700619181E-14 2.333613694850624E-12 -1.959161858787902E-14 2.506168272372518E-13 1.32083204317287E-14
tp -2.550068643480212E-13 2.333613694850624E-12 1.500478466398402E-8 1.692645927406347E-11 2.629949171062718E-9 7.541368750637282E-12
node 6.971966006584715E-15 -1.959161858787902E-14 1.692645927406347E-11 3.635729914755886E-9 -3.617316134987913E-9 -4.393145859000763E-11
peri -3.895907374558007E-15 2.506168272372518E-13 2.629949171062718E-9 -3.617316134987913E-9 4.085184870620068E-9 4.504024181145412E-11
i -3.855840768374355E-15 1.32083204317287E-14 7.541368750637282E-12 -4.393145859000763E-11 4.504024181145412E-11 4.181567703099558E-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 15.83   n/a MPCxxxxx  
diameter diameter 3.569 km 0.443 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.4 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.066   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187834 (1999 VM121)          Discovered 1999-Nov-04 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ 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 2021-May-13 07:37 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin