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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .155239814309499 3.5949e-08  
a 2.764634783003739 7.5059e-09 au
q 2.335453392656657 9.9802e-08 au
i 9.207159726799979 3.7767e-06 deg
node 99.19941838754247 2.8317e-05 deg
peri 31.88240104067907 3.1624e-05 deg
M 219.2348373036505 1.5338e-05 deg
tp 2459657.019702997386
(2022-Mar-18.51970300)
7.2721e-05 TDB
period 1679.016942486639
4.60
6.8377e-06
1.872e-08
d
yr
n .2144111776899861 8.7318e-10 deg/d
Q 3.193816173350822 8.6711e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2822  
   data-arc span      46668 days (127.77 yr)  
   first obs. used      1893-01-16  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:30:33  

Additional Information
 Earth MOID = 1.35613 au 
 Jupiter MOID = 1.89437 au 
 T_jup = 3.304 
[ 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 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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