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JPL Small-Body Database Browser
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14874 (1990 US4)
Classification: Main-belt Asteroid          SPK-ID: 2014874
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1961817355172577 3.2642e-08  
a 2.330808349338845 7.2618e-09 au
q 1.873546322207436 7.5642e-08 au
i 7.06744721439556 3.6269e-06 deg
node 76.40566859208555 2.8598e-05 deg
peri 218.8123847351688 2.9847e-05 deg
M 193.1571329224423 9.0821e-06 deg
tp 2459602.870116018073
(2022-Jan-23.37011602)		 3.3566e-05 TDB
period 1299.745356603714
3.56		 6.0741e-06
1.663e-08		 d
yr
n .2769773311140685 1.2944e-09 deg/d
Q 2.788070376470254 8.6864e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2724  
   data-arc span      10701 days (29.30 yr)  
   first obs. used      1990-10-16  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43808  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:06:05  

Additional Information
 Earth MOID = .863521 au 
 Jupiter MOID = 2.41388 au 
 T_jup = 3.535 
[ 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 13.8   n/a MPO502283  
diameter diameter 4.373 km 0.180 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.31 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Johnson, D.; Lin, W.; Wang, Z.; Zhao, B. (2019) Minor Planet Bull. 46, 280-282.]
geometric albedo albedo 0.335   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14874 (1990 US4)          Discovered 1990-Oct-16 by Elst, E. W. at La Silla
Reference: 20000523/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 US4 = 1993 LM1 = 1999 CZ84 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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