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JPL Small-Body Database Browser
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21684 Alinafiocca (1999 RR33)
Classification: Main-belt Asteroid          SPK-ID: 2021684
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1283792179050762 3.1709e-08  
a 2.428192192465402 8.9647e-09 au
q 2.116462777873481 7.6751e-08 au
i 5.623631774994989 5.2968e-06 deg
node 17.91382920702973 4.2752e-05 deg
peri 75.18941405416336 4.9534e-05 deg
M 90.52613484336676 2.3533e-05 deg
tp 2458652.968246589300
(2019-Jun-18.46824659)
9.0154e-05 TDB
period 1382.047642311545
3.78
7.6536e-06
2.095e-08
d
yr
n .2604830607705257 1.4425e-09 deg/d
Q 2.739921607057322 1.0116e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1115  
   data-arc span      11415 days (31.25 yr)  
   first obs. used      1988-11-03  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:29:27  

Additional Information
 Earth MOID = 1.1413 au 
 Jupiter MOID = 2.43444 au 
 T_jup = 3.491 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456611.5 (2013-Nov-15.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127582424781131 3.1921e-08  
q 2.119253505378337 7.7283e-08 au
tp 2457271.420505714316
(2015-Sep-05.92050571)
9.0476e-05 TDB
node 17.94556055736189 4.2762e-05 deg
peri 75.41952210154561 4.96e-05 deg
i 5.622898139757372 5.2959e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1115  
   data-arc span      11415 days (31.25 yr)  
   first obs. used      1988-11-03  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:29:27  

Additional Information
 Jupiter MOID = 2.43444 au 
 T_jup = 3.491 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.018970900827853E-15 -2.454374490702352E-15 1.070829684645658E-12 -3.867359696584586E-15 2.93996324606851E-13 -1.595035018964161E-15
q -2.454374490702352E-15 5.972717120546312E-15 -2.606650538537232E-12 8.445523320542583E-15 -7.240028631737301E-13 3.877965053872388E-15
tp 1.070829684645658E-12 -2.606650538537232E-12 8.185990323550333E-9 -2.563206321918697E-11 2.289132016463672E-9 -6.654775698664259E-12
node -3.867359696584586E-15 8.445523320542583E-15 -2.563206321918697E-11 1.828588353467456E-9 -1.826298542536383E-9 -1.086295075447923E-10
peri 2.93996324606851E-13 -7.240028631737301E-13 2.289132016463672E-9 -1.826298542536383E-9 2.460146673950859E-9 1.062891045663373E-10
i -1.595035018964161E-15 3.877965053872388E-15 -6.654775698664259E-12 -1.086295075447923E-10 1.062891045663373E-10 2.804702677000769E-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 15.2   n/a MPO365510  

21684 Alinafiocca           Discovered 1999 Sept. 4 by M. White and M. Collins at Anza Observatory of Orange County Astronomers.
Alina Fiocca (b. 1994) is a girl of Italian heritage born with Down's syndrome. A resident of Aliso Viejo, California, she is a bright and beautiful princess, a daily inspiration in her ability to love unconditionally and wholeheartedly.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1999 RR33 = 1988 VC4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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