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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1552398269382291 3.8799e-08  
a 2.764634785082868 7.8781e-09 au
q 2.335453359499196 1.0691e-07 au
i 9.207163295364229 4.453e-06 deg
node 99.19941370555682 2.849e-05 deg
peri 31.88240077531047 3.2108e-05 deg
M 219.2348400634857 1.5554e-05 deg
tp 2459657.019690866290
(2022-Mar-18.51969087)
7.3581e-05 TDB
period 1679.016944380683
4.60
7.1768e-06
1.965e-08
d
yr
n .214411177448116 9.1647e-10 deg/d
Q 3.193816210666541 9.1011e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2521  
   data-arc span      46585 days (127.54 yr)  
   first obs. used      1893-01-16  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42985  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:14:35  

Additional Information
 Earth MOID = 1.35613 au 
 Jupiter MOID = 1.89437 au 
 T_jup = 3.304 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455661.5 (2011-Apr-10.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1549160574390446 3.8535e-08  
q 2.337614631314747 1.0639e-07 au
tp 2456291.763870571427
(2012-Dec-30.26387057)
7.0106e-05 TDB
node 99.40520219446454 2.8602e-05 deg
peri 31.3003736290498 3.2273e-05 deg
i 9.18868938029309 4.4431e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2521  
   data-arc span      46585 days (127.54 yr)  
   first obs. used      1893-01-16  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42985  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:14:35  

Additional Information
 Jupiter MOID = 1.89437 au 
 T_jup = 3.304 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.484932516021735E-15 -4.091662187280148E-15 1.516125872181551E-13 -4.144326266631607E-15 3.729670797121632E-14 -8.991580689043577E-16
q -4.091662187280148E-15 1.1317868849863E-14 -3.151589262223901E-13 1.229373140493055E-14 -8.601409599327118E-14 2.576008008054287E-15
tp 1.516125872181551E-13 -3.151589262223901E-13 4.914845487651541E-9 -4.69570401072788E-12 1.07289791937331E-9 -2.703822628688465E-13
node -4.144326266631607E-15 1.229373140493055E-14 -4.69570401072788E-12 8.18059464210636E-10 -8.078116917017227E-10 -1.689123577532183E-12
peri 3.729670797121632E-14 -8.601409599327118E-14 1.07289791937331E-9 -8.078116917017227E-10 1.04152111636304E-9 1.429730626800941E-12
i -8.991580689043577E-16 2.576008008054287E-15 -2.703822628688465E-13 -1.689123577532183E-12 1.429730626800941E-12 1.974097839564359E-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

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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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