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 ]  
85081 (2153 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2085081
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1387151085173528 6.1594e-08  
a 3.152262668265187 2.1026e-08 au
q 2.714996210161582 1.9289e-07 au
i 4.584070015850372 5.7781e-06 deg
node 357.7593386328583 5.8134e-05 deg
peri 347.4161500136066 6.0685e-05 deg
M 136.7708545691461 1.9465e-05 deg
tp 2458223.854044940124
(2018-Apr-15.35404494)
0.00010807 TDB
period 2044.240673221823
5.60
2.0453e-05
5.6e-08
d
yr
n .1761045089826055 1.762e-09 deg/d
Q 3.589529126368793 2.3943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      763  
   data-arc span      17039 days (46.65 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51509  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:02:09  

Additional Information
 Earth MOID = 1.70799 au 
 Jupiter MOID = 1.82023 au 
 T_jup = 3.187 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457081.5 (2015-Feb-28.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1348869276269709 6.0743e-08  
q 2.733994908906082 1.8855e-07 au
tp 2456170.249050948530
(2012-Aug-30.74905095)
0.00010842 TDB
node 357.8186005959824 5.819e-05 deg
peri 346.5047904673159 6.0944e-05 deg
i 4.580444092925806 5.7654e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      763  
   data-arc span      17039 days (46.65 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51509  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:02:09  

Additional Information
 Jupiter MOID = 1.82023 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.689675357291439E-15 -1.139852214630279E-14 2.318924483747827E-12 8.06858597073832E-15 2.693183238458858E-13 -1.313927181852217E-15
q -1.139852214630279E-14 3.555096413973478E-14 -7.115045381033376E-12 -3.538598934206978E-14 -7.940458933027395E-13 2.937036988347888E-15
tp 2.318924483747827E-12 -7.115045381033376E-12 1.175404739289765E-8 4.24815799278427E-12 1.970187018254291E-9 -5.29595496964257E-12
node 8.06858597073832E-15 -3.538598934206978E-14 4.24815799278427E-12 3.386133189758482E-9 -3.375495900855745E-9 2.528999134669246E-11
peri 2.693183238458858E-13 -7.940458933027395E-13 1.970187018254291E-9 -3.375495900855745E-9 3.714182952292204E-9 -2.61891981035031E-11
i -1.313927181852217E-15 2.937036988347888E-15 -5.29595496964257E-12 2.528999134669246E-11 -2.61891981035031E-11 3.323952805992523E-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 14.6   n/a MPO325049  
diameter diameter 5.552 km 0.772 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85081 (2153 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 2153 T-2 = 2001 RA48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-26 13:18 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin