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JPL Small-Body Database Browser
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351 Yrsa (A892 YA)
Classification: Main-belt Asteroid          SPK-ID: 2000351
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1538152545589975 3.9392e-08  
a 2.768016477337051 8.2825e-09 au
q 2.342253318251954 1.0857e-07 au
i 9.204778971690821 4.5864e-06 deg
node 99.19802698705524 2.9507e-05 deg
peri 31.92560076284486 3.3414e-05 deg
M 133.5094061251585 1.5966e-05 deg
tp 2457976.677841955553
(2017-Aug-11.17784196)
7.4025e-05 TDB
period 1682.098538326745
4.61
7.5498e-06
2.067e-08
d
yr
n .214018377519136 9.6058e-10 deg/d
Q 3.193779636422149 9.5565e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2229  
   data-arc span      46238 days (126.59 yr)  
   first obs. used      1893-01-16  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4531  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:07:54  

Additional Information
 Earth MOID = 1.3633 au 
 Jupiter MOID = 1.89563 au 
 T_jup = 3.303 
[ 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 8.98   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
diameter diameter 39.720 km 0.437 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.29 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Denchev, P. (1999) Abstracts of ACM 1999, 117.]
[Denchev, P. (2000) Planet. Space Sci. 48, 987-992.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.286   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.835   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.60, mean=11.90, max.=17.21) deg.
U-B UB 0.410   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.60, mean=11.90, max.=17.21) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

351 Yrsa (A892 YA)          Discovered 1892-Dec-16 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A892 YA = 1927 OB = 1950 PD1 = 1959 LN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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