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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09228733308184554 4.1292e-08  
a 2.883744729649561 1.0904e-08 au
q 2.617611619261376 1.196e-07 au
i 1.162778657218183 4.131e-06 deg
node 231.2493691469305 0.00022053 deg
peri 137.0426080268454 0.00022156 deg
M 188.4929859547072 2.1608e-05 deg
tp 2459852.644082915721
(2022-Sep-30.14408292)
0.00010801 TDB
period 1788.684104596708
4.90
1.0145e-05
2.778e-08
d
yr
n .2012652760064464 1.1415e-09 deg/d
Q 3.149877840037747 1.191e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2822  
   data-arc span      44008 days (120.49 yr)  
   first obs. used      1899-08-08  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45747  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:23:10  

Additional Information
 Earth MOID = 1.61665 au 
 Jupiter MOID = 2.30904 au 
 T_jup = 3.287 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455676.5 (2011-Apr-25.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08797120703530366 4.1078e-08  
q 2.632361944520468 1.1832e-07 au
tp 2456272.037987092804
(2012-Dec-10.53798709)
0.00011294 TDB
node 231.553428299983 0.00022021 deg
peri 136.6468254005971 0.00022135 deg
i 1.162726586068849 4.1321e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2822  
   data-arc span      44008 days (120.49 yr)  
   first obs. used      1899-08-08  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45747  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:23:10  

Additional Information
 Jupiter MOID = 2.30904 au 
 T_jup = 3.287 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.687430621966563E-15 -4.843062414960801E-15 -4.278228669376472E-13 4.323359775730654E-15 -9.724763007804768E-14 -9.683884871009344E-18
q -4.843062414960801E-15 1.399874721753042E-14 1.187121867757143E-12 -1.276583516972212E-14 2.619865802912426E-13 1.835508156902109E-17
tp -4.278228669376472E-13 1.187121867757143E-12 1.27563902920396E-8 4.939528563798664E-12 2.56610301742008E-9 -1.602062787081457E-13
node 4.323359775730654E-15 -1.276583516972212E-14 4.939528563798664E-12 4.849068406839011E-8 -4.847903453052107E-8 -1.540888482216801E-10
peri -9.724763007804768E-14 2.619865802912426E-13 2.56610301742008E-9 -4.847903453052107E-8 4.899575692814197E-8 1.540266086580828E-10
i -9.683884871009344E-18 1.835508156902109E-17 -1.602062787081457E-13 -1.540888482216801E-10 1.540266086580828E-10 1.707461451507369E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.9   n/a MPO502155 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-August); 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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