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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1552398273381004 3.935e-08  
a 2.764634785163026 7.9574e-09 au
q 2.335453358461412 1.0829e-07 au
i 9.207163773795266 4.5638e-06 deg
node 99.19941313472165 2.8634e-05 deg
peri 31.88240110674148 3.2335e-05 deg
M 219.2348402108481 1.5631e-05 deg
tp 2459657.019690207553
(2022-Mar-18.51969021)
7.3898e-05 TDB
period 1679.016944453705
4.60
7.249e-06
1.985e-08
d
yr
n .214411177438791 9.257e-10 deg/d
Q 3.19381621186464 9.1927e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2385  
   data-arc span      46322 days (126.82 yr)  
   first obs. used      1893-01-16  
   last obs. used      2019-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43883  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:25:06  

Additional Information
 Earth MOID = 1.35613 au 
 Jupiter MOID = 1.89437 au 
 T_jup = 3.304 
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Orbital Elements at Epoch 2455520.5 (2010-Nov-20.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554174245363915 3.9049e-08  
q 2.335080438214456 1.0755e-07 au
tp 2456291.674136253561
(2012-Dec-30.17413625)
7.0345e-05 TDB
node 99.42768883081985 2.8739e-05 deg
peri 31.36881357127488 3.247e-05 deg
i 9.191210577100428 4.555e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2385  
   data-arc span      46322 days (126.82 yr)  
   first obs. used      1893-01-16  
   last obs. used      2019-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43883  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:25:06  

Additional Information
 Jupiter MOID = 1.89437 au 
 T_jup = 3.304 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.524823158978638E-15 -4.191785048164041E-15 1.03889570883822E-13 -4.113739996868085E-15 2.222565317756167E-14 -1.121105094692866E-15
q -4.191785048164041E-15 1.156698874623291E-14 -2.030286452546529E-13 1.126859864565473E-14 -4.882868176748989E-14 3.537163471026472E-15
tp 1.03889570883822E-13 -2.030286452546529E-13 4.94847915063766E-9 -3.912686577615917E-12 1.087781008334312E-9 -1.637607587271267E-13
node -4.113739996868085E-15 1.126859864565473E-14 -3.912686577615917E-12 8.259242612631576E-10 -8.151851636961338E-10 -4.44140217800688E-12
peri 2.222565317756167E-14 -4.882868176748989E-14 1.087781008334312E-9 -8.151851636961338E-10 1.054289676041723E-9 4.121194052624807E-12
i -1.121105094692866E-15 3.537163471026472E-15 -1.637607587271267E-13 -4.44140217800688E-12 4.121194052624807E-12 2.074764348958328E-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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