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7977 (1977 QQ5)
Classification: Amor [NEO]          SPK-ID: 2007977
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 121 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4665558978946653 6.1923e-08  
a 2.225561397536839 1.0986e-08 au
q 1.187212601389333 1.377e-07 au
i 25.16334113218734 8.3515e-06 deg
node 134.2006204235645 1.5724e-05 deg
peri 248.0903819374588 1.8662e-05 deg
M 242.9227307674614 1.8489e-05 deg
tp 2457994.891803036160
(2017-Aug-29.39180304)
6.4813e-05 JED
period 1212.712339668728
3.32
8.9791e-06
2.458e-08
d
yr
n .296855229574344 2.198e-09 deg/d
Q 3.263910193684345 1.6111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      22315 days (61.10 yr)  
   first obs. used      1955-03-23  
   last obs. used      2016-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60544  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-27 05:48:38  

Additional Information
 Earth MOID = .3551 au 
 Jupiter MOID = 2.6463 au 
 T_jup = 3.385 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1 mag n/a MPO319185  
rotation period rot_per 7.457 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Incomplete or inconclusive result.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) http://www.asu.cas.cz/~ppravec/neo.htm]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

7977 (1977 QQ5)          Discovered 1977-Aug-21 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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