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14921 (1994 QA)
Classification: Main-belt Asteroid          SPK-ID: 2014921
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2233433476533637 5.825e-08  
a 2.332062652091672 1.0195e-08 au
q 1.811211972436136 1.372e-07 au
i 25.10984531959973 5.9341e-06 deg
node 69.33673760124749 1.1953e-05 deg
peri 121.2844594544389 1.4752e-05 deg
M 256.9443654112515 1.1545e-05 deg
tp 2459372.872832845211
(2021-Jun-07.37283285)
4.3315e-05 TDB
period 1300.794666485046
3.56
8.5297e-06
2.335e-08
d
yr
n .2767539022686625 1.8148e-09 deg/d
Q 2.852913331747208 1.2472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1258  
   data-arc span      15776 days (43.19 yr)  
   first obs. used      1976-11-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:07:11  

Additional Information
 Earth MOID = .893387 au 
 Jupiter MOID = 2.3399 au 
 T_jup = 3.413 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456887.5 (2014-Aug-18.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2232701794182329 5.8348e-08  
q 1.811285040307698 1.374e-07 au
tp 2456771.516529975493
(2014-Apr-24.01652998)
3.4281e-05 TDB
node 69.3571710672353 1.1957e-05 deg
peri 121.2907294338097 1.4745e-05 deg
i 25.105842596847 5.9338e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1258  
   data-arc span      15776 days (43.19 yr)  
   first obs. used      1976-11-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:07:11  

Additional Information
 Jupiter MOID = 2.3399 au 
 T_jup = 3.413 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.404540837199111E-15 -8.003949364285292E-15 1.677037041015677E-13 3.60701193516509E-15 1.347927791701618E-13 -1.325607100068416E-14
q -8.003949364285292E-15 1.887858092534606E-14 -2.969647984601151E-13 -8.987269056842074E-15 -2.924360742746257E-13 3.247778752441762E-14
tp 1.677037041015677E-13 -2.969647984601151E-13 1.175217638550672E-9 -3.815717447488099E-12 3.196185081668906E-10 6.204682426417408E-12
node 3.60701193516509E-15 -8.987269056842074E-15 -3.815717447488099E-12 1.42976703967357E-10 -1.300923497017821E-10 -3.596179172016348E-11
peri 1.347927791701618E-13 -2.924360742746257E-13 3.196185081668906E-10 -1.300923497017821E-10 2.174224230106361E-10 3.362943373290131E-11
i -1.325607100068416E-14 3.247778752441762E-14 6.204682426417408E-12 -3.596179172016348E-11 3.362943373290131E-11 3.521040060252731E-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 13.9   n/a MPO395148  
diameter diameter 3.658 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.9134 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Galad, A.; Kornos, L.; Gajdos, S. (2009) Minor Planet Bull. 36, 13-15.]
geometric albedo albedo 0.692   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14921 (1994 QA)          Discovered 1994-Aug-16 by Garradd, G. J. at Siding Spring
Reference: 20000523/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 QA = 1950 GG = 1992 BV3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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