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101117 (1998 RA53)
Classification: Main-belt Asteroid          SPK-ID: 2101117
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2176441590345401 4.7876e-08  
a 2.599877012638351 1.1147e-08 au
q 2.034028966629445 1.2627e-07 au
i 5.102035224131876 4.7246e-06 deg
node 167.1529419605128 5.0065e-05 deg
peri 216.8561016195702 5.1047e-05 deg
M 92.81807829761645 8.2126e-06 deg
tp 2458805.717670967868
(2019-Nov-18.21767097)
3.486e-05 TDB
period 1531.184884003542
4.19
9.8472e-06
2.696e-08
d
yr
n .2351120388928599 1.512e-09 deg/d
Q 3.165725058647257 1.3573e-08 au
  Orbit Determination Parameters
   # obs. used (total)      408  
   data-arc span      9573 days (26.21 yr)  
   first obs. used      1994-10-31  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57954  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:33:05  

Additional Information
 Earth MOID = 1.03875 au 
 Jupiter MOID = 2.29561 au 
 T_jup = 3.376 
[ show covariance matrix ]

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 16.3   n/a MPO449612  

101117 (1998 RA53)          Discovered 1998-Sep-14 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
2008-Mar-29 04:01 < 00:01 Eunom 0.0426034524703077 0.0426011681685384 0.0426057367920977 4.80946161239688 4.80946154388709 2454554.667395405 0.863295113685618 124.827622254992 50.0340937470382 -26.6163817241496 73024.3112667845 T 21 CATAB v2.0f-lin.ifort 2021-Feb-24 19:33:06 2021-Feb-24 19:33
2123-Dec-17 08:18 00:14 Iris 0.0420104354447543 0.0419696949821085 0.0420511829090287 2.64520019590496 2.64520014417319 2496819.845809327 14.1145536677799 2201.86851101154 60.178145909791 22.8467495390142 40582.1846729562 T 21 CATAB v2.0f-lin.ifort 2021-Feb-24 19:33:06 2021-Feb-24 19:33
2175-Nov-18 01:35 00:03 Eunom 0.0428813121243859 0.0428235982443285 0.0429390284576872 4.88869890655924 4.8886988395966 2515783.565857401 2.94559912579115 2921.09360298449 60.1878723192425 10.0797016890285 18763.6652354456 T 21 CATAB v2.0f-lin.ifort 2021-Feb-24 19:33:06 2021-Feb-24 19:33

Alternate Designations
 1998 RA53 = 2002 PL29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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