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21214 (1994 RN7)
Classification: Main-belt Asteroid          SPK-ID: 2021214
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04666614600872888 3.3094e-08  
a 2.778088247815709 1.3255e-08 au
q 2.648445576018008 8.8246e-08 au
i 3.316518059679785 5.3439e-06 deg
node 342.7394087319262 5.8491e-05 deg
peri 123.6999944529386 8.643e-05 deg
M 139.542605686661 6.3561e-05 deg
tp 2458544.925865394167
(2019-Mar-02.42586539)
0.00029722 TDB
period 1691.287670147469
4.63
1.2104e-05
3.314e-08
d
yr
n .2128555693713598 1.5234e-09 deg/d
Q 2.907730919613411 1.3873e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1127  
   data-arc span      10304 days (28.21 yr)  
   first obs. used      1992-03-26  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54512  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:41:36  

Additional Information
 Earth MOID = 1.66688 au 
 Jupiter MOID = 2.13962 au 
 T_jup = 3.330 
[ 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 14.68   n/a E2021B10  
diameter diameter 3.388 km 0.379 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.244   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21214 (1994 RN7)          Discovered 1994-Sep-12 by Spacewatch at Kitt Peak
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 RN7 = 1992 FL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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