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 ]  
2685 Masursky (1981 JN)
Classification: Main-belt Asteroid          SPK-ID: 2002685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 89 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110484522677991 3.2777e-08  
a 2.568039297983921 1.079e-08 au
q 2.282862508579921 8.298e-08 au
i 12.12495125467477 3.336e-06 deg
node 215.335406914553 1.6799e-05 deg
peri 288.1654829919709 2.3809e-05 deg
M 246.7741509056059 1.9045e-05 deg
tp 2459473.263577404567
(2021-Sep-15.76357740)
8.055e-05 TDB
period 1503.145167176058
4.12
9.4733e-06
2.594e-08
d
yr
n .239497826198868 1.5094e-09 deg/d
Q 2.853216087387921 1.1988e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2417  
   data-arc span      16942 days (46.38 yr)  
   first obs. used      1973-08-28  
   last obs. used      2020-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41901  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:28:15  

Additional Information
 Earth MOID = 1.32655 au 
 Jupiter MOID = 2.23971 au 
 T_jup = 3.391 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456983.5 (2014-Nov-22.0) TDB
Reference: JPL 89 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1096322521593339 3.2815e-08  
q 2.287549822878501 8.2964e-08 au
tp 2456464.923246028420
(2013-Jun-21.42324603)
7.6792e-05 TDB
node 215.3788889293091 1.6786e-05 deg
peri 288.0601893867504 2.3941e-05 deg
i 12.12619491308728 3.3371e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2417  
   data-arc span      16942 days (46.38 yr)  
   first obs. used      1973-08-28  
   last obs. used      2020-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41901  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:28:15  

Additional Information
 Jupiter MOID = 2.23971 au 
 T_jup = 3.391 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.076842661087064E-15 -2.704566282526041E-15 3.178359613563108E-13 6.678990074781512E-15 5.680995389469043E-14 2.418186599770505E-15
q -2.704566282526041E-15 6.882970448589342E-15 -7.203546860827813E-13 -1.788675032570409E-14 -1.183895624584381E-13 -5.821686020552982E-15
tp 3.178359613563108E-13 -7.203546860827813E-13 5.896963816083345E-9 -5.00019708896356E-12 1.324732764590843E-9 3.032340518648194E-12
node 6.678990074781512E-15 -1.788675032570409E-14 -5.00019708896356E-12 2.817833669710354E-10 -2.764307277718689E-10 -4.982897091799891E-12
peri 5.680995389469043E-14 -1.183895624584381E-13 1.324732764590843E-9 -2.764307277718689E-10 5.731860856949092E-10 5.55731616736491E-12
i 2.418186599770505E-15 -5.821686020552982E-15 3.032340518648194E-12 -4.982897091799891E-12 5.55731616736491E-12 1.113603129942734E-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 12.1   n/a MPO395019  
diameter diameter 10.744 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.114   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2685 Masursky (1981 JN)          Discovered 1981-May-03 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 JN = 1950 VO = 1973 QF = 1975 XJ5 = 1977 KU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-04 03:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin