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 ]  
85068 (1021 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2085068
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1622230663228968 5.3616e-08  
a 2.362449517046532 1.0855e-08 au
q 1.979205712358197 1.273e-07 au
i 2.589392577783785 5.9964e-06 deg
node 187.1438227230122 8.234e-05 deg
peri 167.5721511384849 8.326e-05 deg
M 314.3945188678919 1.48e-05 deg
tp 2459168.518372361763
(2020-Nov-15.01837236)
5.5179e-05 TDB
period 1326.301412653001
3.63
9.1412e-06
2.503e-08
d
yr
n .2714315136556267 1.8708e-09 deg/d
Q 2.745693321734866 1.2616e-08 au
  Orbit Determination Parameters
   # obs. used (total)      600  
   data-arc span      17023 days (46.61 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55955  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:33:21  

Additional Information
 Earth MOID = .9745 au 
 Jupiter MOID = 2.69217 au 
 T_jup = 3.531 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456729.5 (2014-Mar-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1611219762302635 5.3341e-08  
q 1.9813418859042 1.2641e-07 au
tp 2456516.990105742226
(2013-Aug-12.49010574)
4.8106e-05 TDB
node 187.2887382212349 8.2511e-05 deg
peri 167.5215406046641 8.3447e-05 deg
i 2.585783702627765 5.9921e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      600  
   data-arc span      17023 days (46.61 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55955  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:33:21  

Additional Information
 Jupiter MOID = 2.69217 au 
 T_jup = 3.531 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.84531324856148E-15 -6.725616164851805E-15 7.244385183612058E-13 1.578259226173874E-15 1.662146188396013E-13 1.267761005529848E-15
q -6.725616164851805E-15 1.597849870558386E-14 -1.592146644182383E-12 -4.097533459585871E-15 -3.626846655703199E-13 -2.923284378290408E-15
tp 7.244385183612058E-13 -1.592146644182383E-12 2.31421354490361E-9 -4.555540955432698E-12 6.076937541600634E-10 4.617788945830806E-13
node 1.578259226173874E-15 -4.097533459585871E-15 -4.555540955432698E-12 6.80800066163969E-9 -6.801819786426633E-9 1.767789359057535E-11
peri 1.662146188396013E-13 -3.626846655703199E-13 6.076937541600634E-10 -6.801819786426633E-9 6.963434533625076E-9 -1.756616360442999E-11
i 1.267761005529848E-15 -2.923284378290408E-15 4.617788945830806E-13 1.767789359057535E-11 -1.756616360442999E-11 3.590503912367708E-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 16.1   n/a MPO333523  

85068 (1021 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

Alternate Designations
 1021 T-2 = 1994 JJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-10 17:18 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin