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1080 Orchis (1927 QB)
Classification: Main-belt Asteroid          SPK-ID: 2001080
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2581133678805471 2.1193e-08  
a 2.420083365957176 5.6614e-09 au
q 1.795427497818278 5.0299e-08 au
i 4.586050051661847 7.9574e-07 deg
node 2.00561732922022 1.0457e-05 deg
peri 56.91677224266714 1.0844e-05 deg
M 233.0712265049715 3.3823e-06 deg
tp 2459685.343412787656
(2022-Apr-15.84341279)
1.4305e-05 TDB
period 1375.130506641133
3.76
4.8253e-06
1.321e-08
d
yr
n .2617933339864075 9.1863e-10 deg/d
Q 3.044739234096073 7.1227e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2939  
   data-arc span      41873 days (114.64 yr)  
   first obs. used      1906-01-24  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39994  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:57:28  

Additional Information
 Earth MOID = .81179 au 
 Jupiter MOID = 2.33453 au 
 T_jup = 3.464 
[ 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 12.34   n/a E2021B10 IRAS observations used: 13
diameter diameter 22.918 km 0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.1 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Ruthroff, J.C. (2011) Minor Planet Bull. 38, 86-88.]
[Strabla, L.; Quadri, U.; Girelli, R. (2011) Minor Planet Bull. 38, 169-172.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.033   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.624   0.058 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=10.26, mean=10.84, max.=11.41) deg.
U-B UB 0.206   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=10.26, mean=10.84, max.=11.41) deg.
Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1080 Orchis (1927 QB)          Discovered 1927-Aug-30 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1927 QB = 1955 DT = A906 BH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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