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JPL Small-Body Database Browser
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277 Elvira
Classification: Main-belt Asteroid          SPK-ID: 2000277
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09193678028032647 4.1655e-08  
a 2.884835006391567 1.1704e-08 au
q 2.619612564263951 1.2089e-07 au
i 1.162741107403628 4.2645e-06 deg
node 231.2548864590591 0.00022368 deg
peri 137.1798590663884 0.00022481 deg
M 107.8626102090448 2.2322e-05 deg
tp 2458064.273440484327
(2017-Nov-06.77344048)
0.00011094 TDB
period 1789.698590192794
4.90
1.0892e-05
2.982e-08
d
yr
n .2011511893526269 1.2242e-09 deg/d
Q 3.150057448519183 1.2781e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2661  
   data-arc span      43741 days (119.76 yr)  
   first obs. used      1899-08-08  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46019  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:05:33  

Additional Information
 Earth MOID = 1.61784 au 
 Jupiter MOID = 2.30573 au 
 T_jup = 3.286 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.84   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
diameter diameter 30.422 km 0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 29.69 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Slivan, S.M.; Binzel, R.P. (1996) Icarus 124, 452-470.]
[Slivan, S.M.; Binzel, R.P.; Crespo da Silva, L.D.; Kaasalainen, M.; et al. (2003) Icarus 162, 285-307.]
[Slivan, S.M.; Binzel, R.P.; Kaasalianen, M.; Hock, A.N.; et al. (2009) Icarus 200, 514-530.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.196   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.806   0.077 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.91, mean=7.63, max.=9.35) deg.
U-B UB 0.436   0.048 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.91, mean=7.63, max.=9.35) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

277 Elvira          Discovered 1888-May-03 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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