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 ]  
52171 (2127 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2052171
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02658294103267702 3.5237e-08  
a 2.550000215519737 1.246e-08 au
q 2.482213710157262 8.8504e-08 au
i 1.972171673076149 4.7165e-06 deg
node 325.0494633215276 0.0001115 deg
peri 315.9571058180597 0.00019186 deg
M 248.6724613463539 0.00016176 deg
tp 2459460.448131747617
(2021-Sep-02.94813175)
0.00066975 TDB
period 1487.334844833733
4.07
1.0902e-05
2.985e-08
d
yr
n .2420436805138146 1.7741e-09 deg/d
Q 2.617786720882212 1.2792e-08 au
  Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      17015 days (46.58 yr)  
   first obs. used      1973-09-20  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58446  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 10:19:28  

Additional Information
 Earth MOID = 1.46623 au 
 Jupiter MOID = 2.40154 au 
 T_jup = 3.439 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457033.5 (2015-Jan-11.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02776458123551678 3.477e-08  
q 2.478742420620567 8.7698e-08 au
tp 2456477.323991022614
(2013-Jul-03.82399102)
0.00063498 TDB
node 325.1323744033791 0.00011128 deg
peri 313.9412306943361 0.00018679 deg
i 1.975087897847768 4.719e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      17015 days (46.58 yr)  
   first obs. used      1973-09-20  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58446  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 10:19:28  

Additional Information
 Jupiter MOID = 2.40154 au 
 T_jup = 3.439 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.208931761351899E-15 -3.020822041495687E-15 5.29126596562525E-12 2.08940552840197E-15 1.264769831218653E-12 9.328282605119853E-17
q -3.020822041495687E-15 7.691019123939566E-15 -1.034360912448954E-11 -5.417987657209134E-15 -2.471571085651987E-12 -3.572019794723265E-16
tp 5.29126596562525E-12 -1.034360912448954E-11 4.032020625227165E-7 1.446585562816518E-10 9.527104159321308E-8 -2.624726762827616E-11
node 2.08940552840197E-15 -5.417987657209134E-15 1.446585562816518E-10 1.238335243614897E-8 -1.23414955242602E-8 7.783263347151155E-11
peri 1.264769831218653E-12 -2.471571085651987E-12 9.527104159321308E-8 -1.23414955242602E-8 3.488899123304682E-8 -8.398482226436091E-11
i 9.328282605119853E-17 -3.572019794723265E-16 -2.624726762827616E-11 7.783263347151155E-11 -8.398482226436091E-11 2.22692972923852E-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 15.3   n/a MPO266194  

52171 (2127 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2127 T-2 = 1977 RE12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-26 08:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin