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21003 (1987 YV1)
Classification: Main-belt Asteroid          SPK-ID: 2021003
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .164217217753217 3.3933e-08  
a 2.613982164382321 1.1573e-08 au
q 2.184721286090924 9.2799e-08 au
i 14.43814729966422 3.8725e-06 deg
node 130.6792186255475 1.2568e-05 deg
peri 274.9080809308069 1.8213e-05 deg
M 320.9509124620355 1.4619e-05 deg
tp 2459367.940590236834
(2021-Jun-02.44059024)
6.3054e-05 TDB
period 1543.662510081848
4.23
1.0251e-05
2.807e-08
d
yr
n .2332115975148687 1.5487e-09 deg/d
Q 3.043243042673718 1.3473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1680  
   data-arc span      12084 days (33.08 yr)  
   first obs. used      1987-12-17  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48295  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:35:51  

Additional Information
 Earth MOID = 1.24909 au 
 Jupiter MOID = 2.43804 au 
 T_jup = 3.345 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.29   n/a E2021B10  
diameter diameter 3.852 km 0.614 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.278 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.189   0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21003 (1987 YV1)          Discovered 1987-Dec-17 by Elst, E. W., Pizarro, G. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1987 YV1 = 1999 SL9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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