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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1552398052500962 3.9382e-08  
a 2.764634785473626 7.9719e-09 au
q 2.335453419789058 1.0839e-07 au
i 9.207162010139571 4.5644e-06 deg
node 99.19943415344308 2.888e-05 deg
peri 31.88239235424042 3.2601e-05 deg
M 219.2348287393484 1.5691e-05 deg
tp 2459657.019743820531
(2022-Mar-18.51974382)
7.4158e-05 TDB
period 1679.016944736655
4.60
7.2622e-06
1.988e-08
d
yr
n .2144111774026581 9.2739e-10 deg/d
Q 3.193816151158193 9.2094e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2330  
   data-arc span      46308 days (126.78 yr)  
   first obs. used      1893-01-16  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44811  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:52:32  

Additional Information
 Earth MOID = 1.35613 au 
 Jupiter MOID = 1.89437 au 
 T_jup = 3.304 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455467.5 (2010-Sep-28.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1555489198033117 3.9083e-08  
q 2.334438193862808 1.0763e-07 au
tp 2456291.637369299475
(2012-Dec-30.13736930)
7.0595e-05 TDB
node 99.43140469872462 2.8983e-05 deg
peri 31.38366937563806 3.2729e-05 deg
i 9.191957765213623 4.556e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2330  
   data-arc span      46308 days (126.78 yr)  
   first obs. used      1893-01-16  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44811  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:52:32  

Additional Information
 Jupiter MOID = 1.89437 au 
 T_jup = 3.304 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.527462188247331E-15 -4.198707252575957E-15 1.192731800522487E-13 -4.249053831481914E-15 2.666047850597242E-14 -1.162543520023228E-15
q -4.198707252575957E-15 1.158517461028805E-14 -2.526514173158451E-13 1.124720682938756E-14 -6.261503762301145E-14 3.728705274721885E-15
tp 1.192731800522487E-13 -2.526514173158451E-13 4.983672339748348E-9 -4.092731381477502E-12 1.098585820051813E-9 -8.959695217617351E-14
node -4.249053831481914E-15 1.124720682938756E-14 -4.092731381477502E-12 8.400274855321187E-10 -8.290883396684684E-10 -4.564175410950023E-12
peri 2.666047850597242E-14 -6.261503762301145E-14 1.098585820051813E-9 -8.290883396684684E-10 1.071167250750035E-9 4.249836592773778E-12
i -1.162543520023228E-15 3.728705274721885E-15 -8.959695217617351E-14 -4.564175410950023E-12 4.249836592773778E-12 2.075715743919881E-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 9.0   n/a MPO492753 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-August); 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

[ show close-approach data ]
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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