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101977 (1999 RA52)
Classification: Main-belt Asteroid          SPK-ID: 2101977
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1676816299661696 5.6198e-08  
a 2.167783394458141 8.748e-09 au
q 1.804285941461804 1.2085e-07 au
i 2.279766302653157 5.26e-06 deg
node 340.6329834987501 8.8746e-05 deg
peri 340.1874828871407 8.9349e-05 deg
M 247.3630647781285 1.2111e-05 deg
tp 2459565.254433211434
(2021-Dec-16.75443321)
4.0349e-05 TDB
period 1165.79517808665
3.19
7.0568e-06
1.932e-08
d
yr
n .3088021007179378 1.8692e-09 deg/d
Q 2.531280847454478 1.0215e-08 au
  Orbit Determination Parameters
   # obs. used (total)      935  
   data-arc span      7626 days (20.88 yr)  
   first obs. used      1999-06-25  
   last obs. used      2020-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51973  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:24  

Additional Information
 Earth MOID = .789761 au 
 Jupiter MOID = 2.76179 au 
 T_jup = 3.672 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457066.5 (2015-Feb-13.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1680916803585246 5.6235e-08  
q 1.803353410052193 1.2104e-07 au
tp 2457233.227070920784
(2015-Jul-29.72707092)
3.4849e-05 TDB
node 340.6991398780193 8.8661e-05 deg
peri 340.1230008844878 8.9261e-05 deg
i 2.281551721482097 5.2615e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      935  
   data-arc span      7626 days (20.88 yr)  
   first obs. used      1999-06-25  
   last obs. used      2020-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51973  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:24  

Additional Information
 Jupiter MOID = 2.76179 au 
 T_jup = 3.672 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.162410498690304E-15 -6.794940743405302E-15 5.607536998842617E-13 2.135901594800104E-14 6.538085598991889E-14 -1.838844430463913E-15
q -6.794940743405302E-15 1.465103603633628E-14 -1.16306294688997E-12 -4.660846734918856E-14 -1.328055118672694E-13 3.974165605298156E-15
tp 5.607536998842617E-13 -1.16306294688997E-12 1.214484654402577E-9 2.76163757610186E-12 3.629564224314956E-10 -8.241783035657997E-13
node 2.135901594800104E-14 -4.660846734918856E-14 2.76163757610186E-12 7.860723997728233E-9 -7.852881834844629E-9 -5.351212738931512E-11
peri 6.538085598991889E-14 -1.328055118672694E-13 3.629564224314956E-10 -7.852881834844629E-9 7.967493862628593E-9 5.325120887905232E-11
i -1.838844430463913E-15 3.974165605298156E-15 -8.241783035657997E-13 -5.351212738931512E-11 5.325120887905232E-11 2.768332473767052E-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 15.97   n/a E2021B55  

101977 (1999 RA52)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2141-Mar-26 16:32 00:05 Eunom 0.0216869148759848 0.021676067319945 0.0216977699447524 4.09300026359486 4.09300010545027 2503129.189202777 5.1409677949853 835.122227351253 24.111541922968 -49.6870885625114 102525.72688668 T 26 CATAB v2.0f-lin.ifort 2020-Nov-12 19:57:26 2020-Nov-12 19:57

Alternate Designations
 1999 RA52 = 1999 OM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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